Sony SDX-800V/R User manual

Sony SDX-800V/R User manual
SDX-800V
SDX-800V/R 5.25”Model
Product Specification Manual
Version 1.1
March 2007
Copyright © 2005-2007, Sony Corporation.
All right reserved.
NOTE:
This Product Specification Manual is applicable for AIT-3Ex drive.
Notice
This document contains proprietary information which is protected by copyright. All rights reserved. No part of this
document may be photocopied, reproduced or translated to another language without prior written consent of
Sony. The information contained in this document is subject to change without notice.
SONY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS DOCUMENT. Sony shall not be liable
for errors contained herein, or indirect, special, incidental or consequential damages in connection with the
furnishing, performance, or use of this document.
© Copyright 2005, Sony Corporation
For further information, please contact the appropriate Sony location listed below;
Sony Electronics Inc., Tape Storage Solutions (USA)
URL: http://www.storagebysony.com
Sony Australia Limited
33-39 Talavera Rd.
NORTH RYDE, NSW 2113
TEL: 1300-13-7669 FAX: 02-9870-5864
e-mail: [email protected]
Sony of Canada Ltd., AV/IT Marketing Group
Computer Peripherals Product Marketing
115 Gordon Baker Road Toronto, Ontario, M2H 3R6 Canada
TEL: (416) 499-1414 or (1) 800-961-7669
FAX: (416) 499-8541
Sony New Zealand
Akoranga Business Park
NORTH SHORE, AUCKLAND
TEL: 0800-76-6969 FAX: 09-308-9300
e-mail: [email protected]
Sony Business Europe
URL: http://www.sonyisstorage.com/
Sony Chile Ltda
Av. Kennedy 8017, Las Condes, Santiago, Chile
TEL: (02) 210-6000 FAX: (02) 210-5417
Electronics Devices Marketing (Singapore)
(A division company of Sony Electronics (S) Pte. Ltd.)
Enterprise Storage Solutions Dept.
2 International Business Park, #01-10 Tower One,
The Strategy, Singapore 609930
TEL: 65-6544-8000 FAX: 65-6544-7390
Sony Taiwan Limited
Optical Devices Storage Dept. Data Storage Section
5F, 145 Changchun Road, Taipei 104, Taiwan
TEL: 886-2-2522-7920 FAX: 886-2-2522-2153
Sony Corporation of Hong Kong Ltd.
Computer Peripheral Sales & Marketing Division
Electronic Devices Marketing Hong Kong
45/F, The Lee Gardens, 33 Hysan Avenue, Causeway Bay, Hong Kong
TEL: (852) 2909-1008 FAX: (852) 2909-2001
Sony Korea Corporation EDMK CP Sales & Marketing Team
34F, ASEM Tower, World Trade Center, 159-1, Samsung-Dong,
Kangnam-Ku, Seoul, 135-798, Korea
TEL: 82-2-6001-4249 FAX: 82-2-6001-4115
URL: http://www.sony.co.kr/cp/
Sony Corporation of Hong Kong Ltd. Beijing Rep. Office
Computer Peripheral Div.
Full Link Plaza Tower A 11/F., No.18 Chaoyangmenwai Ave., Beijing
100020 P.R.C.
TEL: 86-10-6588-0633 FAX: 86-10-6588-0855
URL: http://www.sony.com.cn/ed/cp/ait/
Sony Gulf FZE Computer Display & Peripheral Div.
P.O.BOX 16871, Jebel Ali, Dubai, U.A.E.
TEL: 971-4-8815488 or 8816912 FAX: 971-4-8817210 or 8816259
Sony Corporation of Hong Kong Ltd.,
Electronic Devices Marketing Hong Kong
Computer Peripherals Sales & Marketing Div.
8/F, One Corporate Avenue, 222 Hu Bin Road. Luwan District,
Shanghai. P.R.C. Postcode 200021
TEL: 86-21-6121-6878
URL: http://www.sony.com.cn/ed/cp/ait/
Sony Marketing of Japan
Business Solution Dept. Server Solution Marketing Section
URL: http://www.sony.co.jp/STORAGE
Sony Brasil Ltda.
Rua InocŽncio Tobias, 125-BlocoA, CEP01144-000, Săo Paulo-SP-Brasil
TEL: (55) 11-3824-6586 to 6598 FAX: (55) 11-3611-9064
URL: http://www.sonybrasil.com
Changing List
Page Clause
Title
SDX-800V Series Ver. 1.0 NOVEMBER, 2005 (RELEASE)
SDX-800 Series Ver. 1.1 March, 2007 (From Ver. 1.0 To 1.1)
Features of the Drive
1-1
1.3.
ESD
2-5
2.2.7.
EMC
2-5
2.2.8.
Performance Specification
2-6
2.3.
Data Capacity
2-6
2.3.1.
2-7
2.3.2.1. Sustained Data Transfer Rate to and from the
Tape
Load Time
2-8
2.3.4.
Unload Time
2-8
2.3.5.
Search Time
2-8
2.3.6.
Rewind Time
2-9
2.3.7.
Safety
2-10
2.4.
Write-Protecting Cassettes
4-3
4.2.5.
Tape Format
4-5
4.5.
Mode Select (6/10) 15h and 55h
6-39
6.7.
6-46
6.7.5.
Medium Partitions Parameter Page (11h)
6-49
6.7.7.
AIT Device Configuration Page (31h)
Report Density Support 44h
6-81
6.19.
Modify
Add
Delete
Remarks
*
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WRTOK(1)
→WRTOK(0)
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Table of Contents
1.
Introduction
1.1.
1.2.
1.3.
1.4.
1.4.1.
2.
About this Product Specification Manual
Introducing the Sony AIT Technology
Features of the Drive
Reference
How to get ECMA-222, 246, 291, 292, 329 Standard Document
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Specifications
2.1.
2.1.1.
2.1.1.1.
2.1.2.
2.1.3.
2.1.3.1.
2.2.
2.2.1.
2.2.2.
2.2.3.
2.2.4.
2.2.5.
2.2.6.
2.2.7.
2.2.8.
2.2.9.
2.3.
2.3.1.
2.3.2.
2.3.2.1.
2.3.2.2.
2.3.3.
2.3.4.
2.3.5.
2.3.6.
2.3.7.
2.3.8.
2.3.9.
2.3.10.
2.3.11.
2.3.12.
2.3.13.
2.3.14.
2.4.
2.4.1.
2.5.
2.5.1.
2.6.
Specifications
Dimensions
Mounting Holes
Weight
Connectors
SCSI Cables and Terminators
Environmental Specifications
Temperature and Humidity Range
Altitude
Suspended Particulate
Vibration
Shock
Acoustic Noise
ESD
EMC
Orientation
Performance Specification
Data Capacity
Data Transfer Rate
Sustained Data Transfer Rate to and from the Tape
Burst Transfer Rate to and from the SCSI Bus
Initialize Time
Load Time
Unload Time
Search Time
Rewind Time
Error Rate
Retry Limits on Rewrites
Definition of Failure
Mean Time Between Failures
Mean Time to Repair
Component Life
Durability
Safety
Conditions of Acceptability
Installation Requirements
Power Requirements
Data Compression
SDX-800V series Ver.1.1 Table of Contents
3.
Installation
3.1.
3.1.1.
3.1.2.
3.1.3.
3.1.4.
3.1.5.
3.1.6.
3.1.7.
3.1.7.1.
3.1.7.2.
Installation Guide
SCSI ID Number Jumper
Termination Power Switch
Parity Disable Jumper
Data Compression ON Switch
Power Connector
SCSI 68 pin Connector
Attaching and Removing the Dust Cover
Attaching the Dust Cover
Removing the Dust Cover
4.1.
4.2.
4.2.1.
4.2.2.
4.2.3.
4.2.4.
4.2.5.
4.3.
4.3.1.
Summary of LED Indications
Operator Action
Powering up the SDX-800V
Inserting Cassettes
Removing Cassettes
Hard Reset Hole
Write-Protecting Cassettes
Internal Function
The Load Sequence
(Effective for non MIC cassette, only) Refer to 12.2.1. Fast
Media Load/Unload (Effective for MIC cassette, only)
The Unload Sequence
(Effective for non MIC cassette, only) Refer to 12.2.1. Fast
Media Load/Unload (Effective for MIC cassette, only)
Power-Fail or SCSI Reset Handling
Diagnostic and Normal Status Displays
Diagnostic Status Display
Normal Status Display
Tape Alert
Tape Format
Maintenance, Troubleshooting and Service
Head Cleaning
Message when cleaning cassette is necessary
The Condition of Cleaning Request
Usage of cleaning cassette
Troubleshooting Guide
Operational Problems
Read/Write Problems
Replace Tape
Media Warning
Clearance for Service
Packaging for Return to Sony
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Operation
4.3.2.
4.3.3.
4.3.4.
4.3.4.1.
4.3.4.2.
4.4.
4.5.
4.6.
4.6.1.
4.6.1.1.
4.6.1.2.
4.6.1.3.
4.6.2.
4.6.2.1.
4.6.2.2.
4.6.2.3
4.6.2.4.
4.6.3.
4.6.4.
SDX-800V series Ver.1.1 Table of Contents
5.
SCSI Interface
5.1.
5.1.1.
5.1.2.
5.1.3.
5.2.
5.2.1.
5.2.2.
5.3.
5.3.1.
5.3.2.
5.3.2.1.
5.3.2.2.
5.3.2.3.
5.3.3.
5.3.4.
5.3.5.
5.3.6.
5.3.7.
5.3.8.
5.3.9.
5.3.10.
5.3.11.
5.3.12.
5.3.13.
5.4.
Introduction
Overview of the SCSI Interface
Supported Messages
Supported Commands
SCSI BUS Operation
Typical SCSI Operation
Disconnect
Message Specification
COMMAND COMPLETE (00h)
EXTENDED MESSAGE (01h)
PARALLEL PROTOCOL REQUEST (04h)
SYNCHRONOUS DATA TRANSFER REQUEST (01h)
WIDE DATA TRANSFER REQUEST
SAVE DATA POINTER (02h)
RESTORE POINTERS (03h)
DISCONNECT (04h)
INITIATOR DETECTED ERROR (05h)
ABORT (06h)
MESSAGE REJECT (07h)
NO OPERATION (08h)
MESSAGE PARITY ERROR (09h)
BUS DEVICE RESET (0Ch)
IDENTIFY (80h-FFh)
IGNORE WIDE RESIDUE (23h)
Status Specification
6.1.
6.2.
6.3.
6.4.
6.5.
6.6.
6.6.1.
6.6.2.
6.6.3.
6.6.3.1.
6.6.4.
6.6.5.
6.6.6.
6.6.7.
6.6.8.
6.6.9.
6.6.10.
6.6.11
ERASE 19h
INQUIRY 12h
LOAD/UNLOAD 1Bh
LOCATE 2Bh
LOG SELECT 4Ch
LOG SENSE 4Dh
The Log Page Descriptor
The Log Parameter Descriptor
Supported Log Pages
Summary List of Supported Pages
Write and Read Error Counters Pages
Last N Error Events List
Tape Alert Log Page
Tape Log Page (Sony Unique)
Tape Capacity Log Page (Sony Unique)
Drive Usage Log Page (Sony Unique)
Read and Write Frame Error Counter Page
Data Compression Transfer Log Page (Sony Unique)
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Command Specification
SDX-800V series Ver.1.1 Table of Contents
6.6.12.
6.6.13.
6.6.14.
6.7.
6.7.1.
6.7.2.
6.7.3.
6.7.4.
6.7.5.
6.7.6.
6.7.7.
6.7.8.
6.7.9.
6.8.
6.8.1.
6.9.
6.10.
6.11.
6.12.
6.13.
6.13.1.
6.13.2.
6.13.3.
6.13.4.
6.14.
6.15.
6.16.
6.17.
6.18.
6.19.
6.20.
6.21.
6.22.
6.23.
6.24.
6.25.
6.26.
6.27.
6.27.1.
6.28.
6.29.
6.30.
6.31.
6.32.
AIT Log Page (Sony Unique)
MIC Fixed Length Information Page (Sony Unique)
MIC Variable Length Information Page (Sony Unique)
MODE SELECT (6/10) 15h and 55h
Disconnect-Reconnect Page (02h)
Control Mode Page (0Ah)
Data Compression Control Page (0Fh)
Device Configuration Page (10h)
Medium Partitions Parameter Page (11h)
Informational Exceptions Control Page (1Ch)
AIT Device Configuration Page (31h)
Append Partition (32h) (This mode page is NOT supported)
Delete Partition (33h) (This mode page is NOT supported)
MODE SENSE (6/10) 1Ah and 5Ah
Mode Sense 31h (AIT Device Configuration Page)
PERSISTENT RESERVE IN 5Eh
PERSISTENT RESERVE OUT 5Fh
PREVENT ALLOW MEDIUM REMOVAL 1Eh
READ 08h
READ ATTRIBUTE 8Ch
ATTRIBUTE VALUES service action
ATTRIBUTE LIST service action
PARTITION LIST service action
VOLUME LIST service action
READ BLOCK LIMITS 05h
READ BUFFER 3Ch
READ POSITION 34h
RECEIVE DIAGNOSTIC RESULTS 1Ch
RELEASE UNIT (6/10) 17h and 57h
REPORT DENSITY SUPPORT 44h
REPORT DEVICE IDENTIFIER A3h
REPORT LUNS A0h
REQUEST SENSE 03h
RESERVE UNIT (6/10) 16h and 56h
REWIND 01h
SEND DIAGNOSTIC 1Dh
SET DEVICE IDENTIFIER A4h
SPACE 11h
CHECK CONDITION
TEST UNIT READY 00h
WRITE 0Ah
WRITE ATTRIBUTE 8Dh
WRITE BUFFER 3Bh
WRITE FILEMARKS 10h
SDX-800V series Ver.1.1 Table of Contents
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7.
Drive Diagnostics
7.1.
7.2.
7.2.1.
7.2.2.
7.2.3.
7.2.4.
7.2.5.
7.2.6.
Overview
Diagnostic Test
Power-on Self Test
SEND DIAGNOSTIC command – Self Test
SEND DIAGNOSTIC command – Individual Test
Diagnostic Test Number Summary
RECEIVE DIAGNOSTIC RESULT command
Diagnostics Results Reference
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8.
Appendix A: ASC & ASCQ Alphabetic Order
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Appendix B: ASC & ASCQ Numeric Order
9-
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10.
Appendix C: SCSI Commands (OP Code Order)
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Appendix D: ASC & ASCQ for AIT (Sony Unique)
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Appendix E: Medium Auxiliary Memory Attribute
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12.1.
12.2.
12.3.
12.4.
12.4.1.
12.5.
12.6.
INTRODUCTION
OVERVIEW
REFERENCE
SCSI COMMAND REQUIREMENTS
LOAD COMMAND
NEW COMMANDS
MEDIUM AUXILIARY MEMORY ATTRIBUTE DATA
13.1.
13.2.
13.3.
13.4.
13.5.
Important Notice
Write-Protected (WP) Bit in Mode Sense Data
How to detect a WORM cartridge
How to initialize a WORM cartridge
How to handle the WORM cartridge in the drive
14.1.
14.2.
14.3.
14.4.
14.5.
14.5.1.
14.5.2.
14.5.3.
Overview
Creating Disaster Recovery Tape
Configuring The Drive For Disaster Recovery Operation
Exiting DR Mode
Supported CDROM DR Command Set
Inquiry (12h)
Read 10 (28h)
Read Capacity (0x25)
13.
Appendix F: AIT based WORM system
14.
Appendix G: DISASTER RECOVER
SDX-800V series Ver.1.1 Table of Contents
14.5.4.
14.5.5.
14.6.
15.
Read TOC (0x43)
Mode Sense/Select Page Code 0x3C
Reset Handling
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Appendix H: GLOSSARY
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SDX-800V series Ver.1.1 Table of Contents
1.Introduction
1.
Introduction
1.1.
About this Product Specification Manual
This Product Specification Manual is applicable for AIT-3Ex drive.
This manual provides information about the Sony SDX-800V series Advanced Intelligent Tape Drives which is
necessary to integrate the drives into OEM products. This manual describes the specifications, SCSI Interface,
diagnostics, operation and installation of the Sony AIT-3Ex Tape Drives.
The Sony SDX-800V drive uses data compression to achieve high capacity and high transfer rates. Actual capacity
and transfer rate depends on the source file type. The capacity ratings listed in the next subsection are based on a
246 meter tape AIT-3Ex cassette. The Sony SDX-800V drive is a high capacity data storage device using Advanced
intelligent tape (AIT) technology. The Sony SDX-800V drive achieves high data integrity through read-after-write, an
additional level of Error Correction Code, and other features.
The Sony SDX-800V drives provide MIC technology that automatically enhance reliability and performance. The
Sony SDX-800V drives provide read and write capability for MIC user data area.
1.2.
Introducing the Sony AIT Technology
While magnetic storage technologies continue to push the envelope of recording density and provide higher
capacities and transfer rates every 18 to 24 months, improvements in time to access this data have become very
limited. Since 1990, tape recording densities have increased up to ten fold, while the time to access this data has
increased less than two fold, creating a large mismatch between the amount of stored data and the ability to access
it.
This large “gap” between data access latency and area density has created a dilemma in application development
and limited the potential to implement truly cost-effective tertiary storage solutions. Many applications compensated
for this deficiency by incorporating multiple redundant tape drives, at higher cost, to achieve an acceptable level of
service for their users. Sony’s new Advanced Intelligent Tape design has recognized this need and provided an
innovative approach to solving the data latency problem while increasing capacity and data transfer rates.
Traditional, older tape technologies relied mostly on conventional mechanical means, such as faster search speeds
or an on-tape index to improve access to stored data. While improvements in electronics and magnetics have been
the main enablers of increased capacity and transfer rates, rarely have these same technologies been employed to
significantly improve access to data.
Sony’s Advanced Intelligent Tape (AIT) architecture has deviated from conventional designs and employed
electronic enhancements to significantly improve access to stored data, using a captive, non-volatile memory chip
contained within the magnetic data cartridge. Known as Memory-In-Cassette, or MIC, this memory chip provides a
direct and immediate connection to the tape drive’s on-board processors to enable quick media load, fast access to
user files and provide a wealth of data about the history and current state of the data cartridge.
1.3. Features of the Drive
Major features of the Sony SDX-800V include:
• Capacity
20 Gbyte typical when using 98 meter tape AIT-E Turbo cassette (TAITE-20N)
52 Gbyte with 2.6:1 Data Compression
25 Gbyte typical when using 170 meter tape AIT-1 cassette (SDX-T3N or SDX1-25C)
65 Gbyte with 2.6:1 Data Compression
35 Gbyte typical when using 230 meter tape AIT-1 cassette (SDX1-35C)
91 Gbyte with 2.6:1 Data Compression
40 Gbyte typical when using 186 meter tape AIT-1 Turbo cassette (TAIT1-40N or TAIT40C)
104 Gbyte with 2.6:1 Data Compression
SONY AIT-3Ex drive SDX-800V series Ver.1.1
1-1
1.Introduction
36 Gbyte typical when using 170 meter tape AIT-2 cassette (SDX2-36C)
93 Gbyte with 2.6:1 Data Compression
50 Gbyte typical when using 230 meter tape AIT-2 cassette (SDX2-50C)
130 Gbyte with 2.6:1 Data Compression
80 Gbyte typical when using 186 meter tape AIT-2 Turbo cassette (TAIT2-80N or TAIT2-80C)
208 Gbyte with 2.6:1 Data Compression
100 Gbyte typical when using 230 meter tape AIT-3 cassette (SDX3-100C)
260 Gbyte with 2.6:1 Data Compression
150 Gbyte typical when using 246 meter tape AIT-3Ex cassette (SDX3X-150C)
390 Gbyte with 2.6:1 Data Compression
• Sustained transfer rate
11 Mbyte/sec when using AIT-1 cassette
16 Mbyte/sec when using AIT-E Turbo, AIT-1 Turbo, AIT-2, AIT-2 Turbo cassette and AIT-3 cassette
18 Mbyte/sec when using AIT-3Ex cassette
• Supported Format
AIT-E Turbo (Read only)
AIT-1 (Read only)
AIT-1 Turbo (Read only)
AIT-2 (Read only)
AIT-2 Turbo (Read/Write)
AIT-3 (Read/Write)
AIT-3Ex (Read/Write)
• Not compatible with the DDS and EXABYTE format tapes
• Burst transfer rate
12 Mbyte/sec Asynchronous
160 Mbyte/sec Synchronous
• Large 96 MB Buffer Memory
• 3.5” Standard Height, 5.25” Half Height
• Embedded SCSI interface (Ultra 160 LVD, Single-ended or Low Voltage differential)
• Supports Variable or Fixed record length
• Supports SCSI Disconnection/Arbitration
• Read After Write (RAW) On and Off capability
• Read Retry On and Off capability
• Frame rewrite function – AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2, AIT-2 Turbo, AIT-3
• Fragment rewrite function – AIT-3Ex
• Three levels of Error Correction Code (ECC) – AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2, AIT-2 Turbo, AIT-3
• Two levels of Error Correction Code (ECC) – AIT-3Ex
• High Speed search (120 times nominal Read/Write speed)
1-2
SONY AIT- 3Ex drive SDX-800V series Ver. 1.1
1.Introduction
• Random read, Append write
• MIC Support (Automatic reliability and performance enhancement.)
• MIC Support (Read and write capability for MIC user data area.)
• Remote-MIC Support
• Tape Alert
1.4. Reference
Please refer to the following documents for additional information:
•SCSI-2 1ANSI X3.131.-1996 Small Computer Systems Interface-2 (SCSI-2).
• SCSI Parallel Interface-2 (SPI-2) ANSI X3T10-1142D rev 20b.
ANSI X3T9.2/86-109 (Revision 10H, or above), available through ANSI.
• SCSI Parallel Interface-3 (SPI-3) ANSI INCITS 336-2000
• SCSI Architecture Model-2 (SAM-2) ANSI INCITS 366-2003
• ALDC - Adaptive Lossless Data Compression (ALDC) Algorithm;
ECMA-222, available through 2ECMA.
• 8 mm Wide Magnetic Tape Cartridge for Information Interchange - Helical Scan Recording - AIT-1 Format;
ECMA-246, available through ECMA.
• 8 mm Wide Magnetic Tape Cartridge for Information Interchange - Helical Scan Recording - AIT-1 with MIC
Format; ECMA-291, available through ECMA.
• 8 mm Wide Magnetic Tape Cartridge for Information Interchange - Helical Scan Recording - AIT-2 with MIC
Format; ECMA-292, available through ECMA.
• ECMA-329 AIT-3 with MIC.
1.4.1.
How to get ECMA-222, 246, 291, 292, 329 Standard Document
You can get these ECMA Standard Document file from the following URL.
http://www.ecma-international.org/publications/standards/standard.html
1
ANSI (American National Standard for Industry)
2
ECMA (European Computer Manufacturers Association)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
1-3
1.Introduction
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1-4
SONY AIT- 3Ex drive SDX-800V series Ver. 1.1
2.Specification
2. Specifications
Physical, environmental and performance specifications for the SDX-800V and SDX-800V/R.
2.1. Specifications
Dimensions
2.1.1.
The SDX-800V
Height
Width
Depth
41.2 mm (1.62 in)
101.6 mm (4.00 in)
155.0 mm (6.10 in)
± 0.5 mm (0.02 in)
± 0.5 mm (0.02 in)
± 0.5 mm (0.02 in)
41.2 mm (1.62 in)
146.0 mm (5.75 in)
155.0 mm (6.10 in)
± 0.5 mm (0.02 in)
± 0.5 mm (0.02 in)
± 0.5 mm (0.02 in)
The SDX-800V/R
Height
Width
Depth
Note: The above dimensions do not include the front panel thickness, eject button and SCSI connector.
_ 0.5mm
7.6 +
_ 0.02"]
[0.30" +
_ 0.5mm
Height 41.2 +
_
[1.62" + 0.02"]
_ 0.5mm
Depth 155.0 +
_
[6.10" + 0.02"]
_ 0.5mm
Width 101.6 +
_ 0.02"]
[4.00" +
_ 0.6mm
7.4 +
_ 0.02"]
[0.29" +
Figure 2-1: Dimensions (SDX-800V)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-1
2.Specification
2.1.1.1. Mounting Holes
Figure 2-2a gives details of the mounting holes for the Sony SDX-800V and figure 2-2b for the Sony SDX-800V/R.
_ 0.5mm
4.8 +
_ 0.02"]
[0.19" +
_ 0.5mm
41.2 +
_ 0.02"]
[1.62" +
_ 0.5mm [6.10"+
_ 0.02"]
155.0 +
6-M3 (depth 2.5mm [0.10"] max.)
_ 0.6mm
7.4 +
_ 0.02"]
[0.29" +
_ 0.3mm [3.54" +
_ 0.01"]
90.0 +
6-M3 (depth 2.5mm [0.10"] max.)
_ 0.3mm
21.0 +
_ 0.01"]
[0.83" +
_ 0.3mm
60.0 +
_ 0.01"]
[2.36"+
_ 0.6mm [0.39"+
_ 0.02"]
9.8 +
_ 0.5mm [3.70" +
_ 0.02"]
94.0 +
_ 0.5mm [4.00" +
_ 0.02"]
101.6 +
_ 0.3mm
31.0 +
_ 0.01"]
[1.22" +
_ 0.3mm
42.0 +
_ 0.01"]
[1.65" +
_ 0.3mm [2.76"+
_ 0.01"]
70.0 +
Figure 2-2a: SDX-800V Mounting Holes
2-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2.Specification
_ 0.5mm
9.9 +
_ 0.02"]
[0.39" +
_ 0.5mm
21.8 +
_ 0.02"]
[0.86"+
_ 0.3mm [3.12" +
_ 0.01"]
79.2 +
_ 0.5mm
7.0 +
_ 0.02"]
[0.28"+
_ 0.5mm
8.4 +
_ 0.02"]
[0.33" +
_ 0.5mm
41.2 +
_ 0.02"]
[1.62" +
_ 0.6mm
7.4 +
_ 0.02"]
[0.29"+
_ 0.6mm
9.8 +
_ 0.02"]
[0.39" +
6-M3
_ 0.3mm
47.5 +
_ 0.01"]
[1.87"+
_ 0.3mm [3.12" +
_ 0.01"]
79.2 +
_ 0.5mm
7.6 +
_ 0.02"]
[0.30" +
_ 0.5mm [6.10" +
_ 0.02"]
155.0 +
_ 0.3mm [2.76" +
_ 0.01"]
70.0 +
_ 0.3mm
31.0 +
_ 0.01"]
[1.22"+
_ 0.3mm
42.0 +
_ 0.01"]
[1.65"+
_ 0.5mm [3.70"+
_ 0.02"]
94.0 +
_ 0.5mm [5.50"+
_ 0.02"]
139.6 +
_ 0.02"]
_ 0.5mm [5.75"+
146.0 +
_ 0.5mm [5.87"+
_ 0.02"]
149.0 +
_ 0.3mm [3.12"+
_ 0.01"]
79.2 +
4-M3
_ 0.3mm
47.5 +
_ 0.01"]
[1.87"+
Figure 2-2b: SDX-800V/R Mounting Holes
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-3
2.Specification
2.1.2.
Weight
SDX-800V
780 grams, without a cassette and a front bezel.
SDX-800V/R
1010 grams, without a cassette and a front bezel.
2.1.3.
Connectors
The SDX-800V has a SCSI connector with a power connector and Jumpers at the positions shown in Figure 2-3. All
other connectors are for use by Sony’s manufacturing and service facilities only.
Jumpers
Power Connector
SCSI 68 pin Connector
Figure 2-3: Connector Positions
2.1.3.1. SCSI Cables and Terminators
The Single-Ended SCSI configuration and Low-Voltage-differential SCSI configuration are supported by SDX-800V,
and SDX-800V/R The hardware specification of this interface can be found in Clause 3. Physical Characteristics, of
the X3T10/1142D (SCSI Parallel Interface2) standard. Only unshielded connectors are supported. Possible cable
and connector sources are listed below. This does not imply that these are the only sources for SCSI accessories.
Note: When using high speed data transfer with the SDX-800V it is recommended that total length of the SCSI data
cable not exceeded 1.5m for Single Ended SCSI configuration. As for Low-Voltage-differential SCSI configuration,
less than 12m is recommended.
Cable
Connector
30 AWG Ribbon
Hitachi UL 20848 (or equivalent)
AMP 1-786090-7 (or equivalent)
2.2. Environmental Specifications
The specifications which apply when media is present may be different than these.
2.2.1.
Temperature and Humidity Range
Temperature
Operating
Non-Operating(mech.)
Non-Operating(tape)
5 ºC to 40 ºC (∆T < 10 ºC/h)
-40 ºC to 70 ºC (∆T < 20 ºC/h)
-40 ºC to 45 ºC (∆T < 20 ºC/h)
Humidity
Operating
Non-operating (mech.)
Non-operating (tape)
20 to 80% RH, non-condensing
Maximum wet bulb temperature = 26 ºC
5 to 95%RH(∆RH<30%/h)
Maximum wet bulb temperature = 45 ºC
20 to 80%RH(∆RH<30%/h)
.
2-4
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2.Specification
2.2.2.
Altitude
Operating
2.2.3.
0 to 10,000 feet
Suspended Particulate
Less than 150 microgram/m3
Based Sampling period 24 hours
Operating
2.2.4.
Vibration
Operating
Swept Sine 5 to 500Hz, @0.25G Peak 1 Octave/min.
3 axis, 3 directions
Swept Sine 5 to 500Hz, @ 0.5G Peak 1 Octave/min.
3 axis, 3 directions
Non-operating
2.2.5.
Shock
Operating
No Data Loss
Half Sine
Performance
5 G Peak 3 ms
3 axes, 3 directions
*Interval 10 seconds
Non-operating
No Device Damage
Half Sine
90 G Peak 3 ms
(30 G Peak 11 ms)
3 axes, 3 directions
*Interval 10 seconds
2.2.6.
Acoustic Noise
The ambient noise level is no greater than 25 dB (A). The sound-meter on (A) scale is located 1m in front of the
center of the drive front panel. (A): A curve weight
Streaming Write/Read
Insert/Eject
2.2.7.
35dB(A)
60dB(A)
ESD
ESD
(Front Panel Only, integrated product)
2.2.8.
EMC
EMI/EMS
2.2.9.
Discharge Voltage
Less than 15kV: No operation failure
Less than 20kV: No drive damage
Emissions & Immunity
EN55022 (1998)
EN55024 (1998) + A1 (2001) + A2 (2003)
Orientation
The SDX-800V can be installed in three different mounting positions as shown in the figure below. Each position has
a maximum tolerance of ± 10 degrees.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-5
2.Specification
10
10
10
10
10
10
10
10
Figure 2-4: Mounting Attitude and Tolerance
2.3. Performance Specification
The data capacity, data transfer rate and data reliability specifications this chapter require the media to conform to
the AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2, AIT-2 Turbo, AIT-3, AIT-3Ex Media Specification and also require the
drive and media to remain within their respective operating and non-operating environmental specifications. The
specifications below also assume that the C3 ECC frame (AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2, AIT-2 Turbo,
AIT-3) or C3 ECC fragment (AIT-3Ex) is generated on writing and used as necessary on reading, and further
assumes that read-after-write rewrites are used as necessary on writing.
2.3.1.
Data Capacity
The SDX-800V includes a data compression capability. When data compression is enabled the drive capacity can
increase from 2 times to 3 times. The efficiency of the data compression depends on the actual data that is being
compressed and cannot be predicted precisely prior to compression.
Format
Native
Capacity
AIT-E Turbo Standard Format
Format
AIT-1 Standard Format
Native
Capacity
25.0 Gbyte typical
When using 170 meter tape AIT-1 cassette (SDX-T3N and SDX1-25C)
35.0 Gbyte typical
When using 230 meter tape AIT-1 cassette (SDX1-35C)
Format
AIT-1 Turbo Standard Format
Native
Capacity
40.0 Gbyte typical
2-6
20.0 Gbyte typical
When using 98 meter tape AIT-E Turbo cassette (TAITE-20N)
When using 186 meter tape AIT-1 Turbo cassette (TAIT1-40N and
TAIT1-40C)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2.Specification
Format
AIT-2 Standard Format
Native
Capacity
50.0 Gbyte typical
When using 230 meter tape AIT-2 cassette (SDX-2-50C)
36.0 Gbyte typical
When using 170 meter tape AIT-2 cassette (SDX2-36C)
Format
AIT-2 Turbo Standard Format
Native
Capacity
80.0 Gbyte typical
When using 186 meter tape AIT-2 Turbo cassette (TAIT2-80N and
TAIT2-80C)
Format
Native
Capacity
AIT-3 Standard Format
Format
Native
Capacity
AIT-3Ex Standard Format
2.3.2.
100.0 Gbyte typical
150.0 Gbyte typical
When using 230 meter tape AIT-3 cassette (SDX3-100C)
When using 246 meter tape AIT-3Ex cassette (SDX3X-150C)
Data transfer Rate
2.3.2.1. Sustained Data Transfer Rate to and from the Tape
The sustained transfer rate to and from the tape is 18Mbyte per second with AIT-3Ex cassette, 16Mbyte per second
with AIT-3, AIT-2 Turbo, AIT-2, AIT-1 Turbo and AIT-E Turbo cassette, 11Mbyte per second with AIT-1 cassette. For
this sustained rate to be achieved, the drive must be streaming.
2.3.2.2. Burst Transfer Rate to and from the SCSI Bus
The SDX-800V will transmit and receive data bursts to and from the SCSI bus at a maximum burst rate of 12Mbyte
per second, using Ultra 160 asynchronous transfers and maximum of 160Mbyte per second, using Ultra160
synchronous transfers.
2.3.3.
Initialize Time
Initialize Time means the period from the time the drive is powered on to the time when the drive is ready and waiting
for a SCSI command such as INQUIRY or TEST UNIT READY. Initialize Time is less than 5 seconds.
The drive will respond with BUSY status until the completion of the Initialize Time. The Initialize Time does not
include the time necessary for drive diagnostics to complete and the drive to become ready for tape insertion.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-7
2.Specification
2.3.4.
Load Time
Load Time means the period from the time when the operator inserts a cassette into the drive to the time when the
drive is ready. The data in the below table represents the average time for SDX-800V. The time it may take for
retrying is not reflected here.
Load Time
Load Time
2.3.5.
TAITE-20N (98m)
SDX1-25C (170 m)
SDX1-35C (230 m)
TAIT1-40N (186 m)
TAIT1-40C (186 m)
80 sec
14 sec
14 sec
80 sec
14 sec
SDX2-50C (230m)
TAIT2-80N (186 m)
TAIT2-80C (186 m)
SDX3-100C (230 m)
SDX3X-150C (246 m)
14 sec
25 sec
14 sec
14 sec
14 sec
Unload Time
Unload Time means the period from the beginning of the unload sequence caused by Unload Command or Eject
button to the time when a cassette is ejected from the slot. Unload Time does not include Rewind time. The data in
the below table represents the average time for SDX-800V. The time it may take for retrying is not reflected here.
Unload Time
Unload Time
2.3.6.
TAITE-20N (98m)
SDX1-25C (170 m)
SDX1-35C (230 m)
TAIT1-40N (186 m)
TAIT1-40C (186 m)
25 sec
24 sec
24 sec
25 sec
25 sec
SDX2-50C (230m)
TAIT2-80N (186 m)
TAIT2-80C (186 m)
SDX3-100C (230 m)
SDX3X-150C (246 m)
24 sec
25 sec
24 sec
24 sec
24 sec
Search Time
Search Time means the period for the drive to find the position that is required by a command. This time also
depends on the tape length and the position of the head along the tape. The data in the below table represents the
average time for SDX-800V. The time it may take for retrying is not reflected here.
Search Time
Search Time
2.3.7.
TAITE-20N (98m)
SDX1-25C (170 m)
SDX1-35C (230 m)
TAIT1-40N (186 m)
TAIT1-40C (186 m)
60 sec
85 sec
120 sec
105 sec
80 sec
SDX2-50C (230m)
TAIT2-80N (186 m)
TAIT2-80C (186 m)
SDX3-100C (230 m)
SDX3X-150C (246 m)
120 sec
105 sec
80 sec
120 sec
130 sec
Rewind Time
Rewind Time means the period from the beginning to the end of rewinding sequence. This value depends on the
tape length and the position of the head along the tape. The data in the below table represents the average time for
SDX-800V. The time it may take for retrying is not reflected here.
Rewind Time
Rewind Time
2.3.8.
TAITE-20N (98m)
SDX1-25C (170 m)
SDX1-35C (230 m)
TAIT1-40N (186 m)
TAIT1-40C (186 m)
55 sec
80 sec
105 sec
90 sec
90 sec
SDX2-50C (230m)
TAIT2-80N (186 m)
TAIT2-80C (186 m)
SDX3-100C (230 m)
SDX3X-150C (246 m)
105 sec
90 sec
90 sec
105 sec
115 sec
Error Rate
The un-correctable bit error rate is expected to be less than 1 in 10 to the 17th.
2-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2.Specification
Retry Limits on Rewrites
2.3.9.
AIT-3Ex
For Read-after-Write error correction, each group can be rewritten up to a maximum of 14 times giving 15 times of
the group.
AIT-3
For Read-after-Write error correction, each frame can be rewritten up to a maximum of 63 times giving 64 writes of
the frame.
2.3.10. Definition of Failure
A failure is defined as any permanent manufacture of the drive that prevents the user from retrieving data from tape.
This includes failure to power up, failure to unload or eject a cassette, or failure to write and read data to and from the
tape, providing that both the drive and tape are being used within specification.
Faults are not considered failures when they are related to operator error mishandling and abuse, system-related
faults (cabling problems unsupported systems, operating software and so on) no trouble found, and transportation
damage.
2.3.11.
Mean Time Between Failures
The Mean Time Between Failures (MTBF) for the SDX-800V is 400,000 power-on hours, assuming a duty cycle of
100%, where:
DutyCycle =
2.3.12.
Tape Motion Time
PowerOn Time × 100
Mean Time to Repair
The Mean Time To Repair (MTTR) of the SDX-800V is 30 minutes. Since at the field level the entire drive is
considered a Field Replaceable Unit (FRU) the time to replace the drive with a new one is less that 30 minutes.
2.3.13.
Component Life
The specified life of the SDX-800V is 5 years average.
2.3.14. Durability
The durability of the components in the SDX-800V will exceed the number of operations listed on the following table:
Start/Stop
Reposition
Thread/Unthread
Load/Eject
400,000 times
3,000,000 times
100,000 times
100,000 times
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-9
2.Specification
2.4. Safety
The SDX-800V conforms to the following safety standards:
• UL/cUL (Underwriters Laboratories, Inc.)
CAN/CSA C22.2 No.60950-1-03/UL 60950-1, First Edition.
Safety of Information Technology Equipment.
• TUV
EN60950-1: 2001 Safety of Information Technology Equipment including
Electrical Business Equipment
• CE Mark
2.4.1.
Conditions of Acceptability
The SDX-800V is for use only in equipment where the suitability of the combination has been determined by an
appropriate certification organization (for example, Underwriters Laboratories, Inc. or the Canadian Standards
Association in North America, and the British Standards Institution or Verband Deutscher Elektrotechniker in
Europe). Other considerations include the following:
1.
An enclosure must be supplied to limit the operator’s access to live parts, to provide system stability, and to
furnish the drive with the necessary grounding integrity.
2.
The necessary voltage supplies must be provided. These supplies are Extra Low Voltage SEC for UL and
CSA, or Safety Extra Low Voltage for BSI, VDE, and so on, of +5V and +12V DC.
2.5. Installation Requirements
Note: Do not move the drive while it is operating. It may cause malfunction.
2-10
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2.Specification
2.5.1.
Power Requirements
Voltage
Max Ripple
Current
Typical
Maximum
5V ± 5%
100 mV p-p
1.5A
2.5A
12V ± 10%
150 mV p-p
0.75A
3.0A
* exclude SCSI terminator power
5V
4.75V
T
12V
0V
10.8V
0V
-300 ms < T < 300 ms
Figure 2-5: Power-up Sequence
Note: Voltage has to increase constantly during Power-up until Maximum is reached.
Do not turn off the drive while the tape is in the drive.
2.6. Data Compression
The tape capacity is increased by compressing data prior to writing it to the tape. Data compression is a well
established technology for reducing the number of bits used to represent data in order to improve data transfer rate
as well as reduce the amount of storage space consumed by the data. The compression ratio depends on the source
file type. The SDX-800V uses the ALDC Data Compression algorithm. ALDC is ECMA standard data compression
algorithm. (ECMA-222) The Data Compression control page allows the host computer to enable data compression
and decompression and also configure the way in which the drive responds to compressed/uncompressed data
boundaries on the tape. The AIT-1, AIT-2, AIT-3 and AIT-3Ex Format allows both compressed and uncompressed
data to reside on the same tape.
The Sony SDX-800V has a DIP switch to disable the Data Compression/Decompression. After power-on reset with
this DIP switch set, both data compression and data decompression are disabled However, a MODE SELECT
command can override the setting of this DIP switch. After power-on reset without this DIP switch set, both data
compression and data decompression are enabled. (See clause 3.1.4)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
2-11
2.Specification
This page intentionally left blank.
2-12
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3.Installation
3. Installation
3.1. Installation Guide
This Product Specification Manual is applicable for AIT-3Ex drive.
Dip switch
Jumpers
Power Connector
SCSI 68 pin Connector
Figure 3-1: DIP switch & Connector
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3-1
3.Installation
ON
OFF
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
DR (Desaster Recovery) Mode
Emulation Mode
AIT Library Interface Mode
Reserved
Terminator Power (ON)
Periodic Cleaning Req (ON)
DC Control-1
DC Control-2
Figure 3-2: DIP Switch Positions
Table 3-1: Drive Mode
DIP SW
1
OFF
ON
OFF
OFF
2
OFF
OFF
ON
OFF
3
ON
OFF
OFF
ON
4
OFF
OFF
OFF
OFF
MODE
Normal
DR Mode
SDX-700C Emulation Mode
Library Mode
Table 3-2: Periodic Cleaning Request (Refer to 4.6.1.2)
DIP SW 6
OFF
ON
3.1.1.
Definition
Disable Periodic Cleaning Request
Enable Periodic Cleaning Request
SCSI ID Number Jumper
The SCSI ID number of the SDX-800V is selected by the SCSI ID number jumpers. The figure below shows the
jumper configuration for each of the possible SCSI IDs.
SCSI ID3 ID2 ID1 ID0
0
:
:
: :
1
:
:
:
|
Parity Disable
2
:
:
|
:
No Connection
3
:
:
|
|
ID3
4
:
|
:
:
ID2
5
:
|
:
|
ID 1
6
:
|
|
:
ID0
7
:
|
|
|
8
|
:
:
:
9
|
:
:
|
10
|
:
|
:
11
|
:
|
|
12
|
|
:
:
13
|
|
:
|
14
|
|
|
:
15
|
|
|
|
Figure 3-3: Jumper positions
: = OPEN
Jumper not installed
| = CLOSED
Jumper installed
3.1.2.
Termination Power Switch
Position 5 of DIP switch is used to set whether SDX-800V provides the termination power to pin 17,18,51,52 on SCSI
bus, or not.
3-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3.Installation
3.1.3.
Parity Disable Jumper
Parity check function can be disabled by Jumper. Parity check is disabled while left end jumper is installed. Parity
generate function is always enabled.
Parity
Setting
Disable
|
Enable
:
: = OPEN
Jumper not installed
| = CLOSED
Jumper installed
3.1.4.
Data Compression ON Switch
Data compression can be selected by DIP switch.
Table 3-3: Data Compression Switches
DC Control-1
OFF
DC Control-2
OFF
OFF
ON
ON
OFF
ON
ON
3.1.5.
Definition
Compression disabled at power-on. The host is allowed to control
compression.
Compression disabled at power-on. The host is not allowed to control
compression.
Compression enabled at power-on. The host is allowed to control
compression.
Compression enabled at power-on. The host is not allowed to control
compression.
Power Connector
The power connector is illustrated as Figure 3-4.
4
5V
3
GND
2
GND
1
12V
Figure 3-4: Power Connector
3.1.6.
SCSI 68 pin Connector
Figure 3-5 illustrates SCSI 68 pin connector, and table 3-4 shows the assignments for the pins of the connector.
Pin 34
1
Pin 68
35
Figure 3-5: Non-shielded SCSI Device Connector
SDX-800V supports both Low-Voltage-Differential SCSI configuration as shown table 3-4 and Single-Ended SCSI
configuration as shown table 3-5. SDX-800V detects and switches SCSI configuration between
Low-Voltage-Differential and single-ended modes by monitoring DIFFSENS signal assigned pin 16 in SCSI bus.
(Refer to table 3-4)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3-3
3.Installation
Table 3-4: SDX-800V SCSI Signals
(Low-Voltage-Differential Type BUS P Cable Signal Assignment)
Signal Name
-DB(12)
-DB(13)
-DB(14)
-DB(15)
-DB(P1)
-DB(0)
-DB(1)
-DB(2)
-DB(3)
-DB(4)
-DB(5)
-DB(6)
-DB(7)
-DB(P)
GROUND
GROUND
TERMPWR
TERMPWR
RESERVED
GROUND
-ATN
GROUND
-BSY
-ACK
-RST
-MSG
-SEL
-C/D
-REQ
-I/O
-DB(8)
-DB(9)
-DB(10)
-DB(11)
3-4
Cable Conductor Number
35
1
36
2
37
3
38
4
39
5
40
6
41
7
42
8
43
9
44
10
45
11
46
12
47
13
48
14
49
15
50
16
51
17
52
18
53
19
54
20
55
21
56
22
57
23
58
24
59
25
60
26
61
27
62
28
63
29
64
30
65
31
66
32
67
33
68
34
Signal Name
+DB(12)
+DB(13)
+DB(14)
+DB(15)
+DB(P1)
+DB(0)
+DB(1)
+DB(2)
+DB(3)
+DB(4)
+DB(5)
+DB(6)
+DB(7)
+DB(P)
GROUND
DIFFSENS
TERMPWR
TERMPWR
RESERVED
GROUND
+ATN
GROUND
+BSY
+ACK
+RST
+MSG
+SEL
+C/D
+REQ
+I/O
+DB(8)
+DB(9)
+DB(10)
+DB(11)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3.Installation
Table 3-5: SDX-800V SCSI Signals (Single-Ended Type BUS P Cable Signal Assignment)
Signal Name
-DB(12)
-DB(13)
-DB(14)
-DB(15)
-DB(P1)
-DB(0)
-DB(1)
-DB(2)
-DB(3)
-DB(4)
-DB(5)
-DB(6)
-DB(7)
-DB(P)
GROUND
GROUND
TERMPWR
TERMPWR
RESERVED
GROUND
-ATN
GROUND
-BSY
-ACK
-RST
-MSG
-SEL
-C/D
-REQ
-I/O
-DB(8)
-DB(9)
-DB(10)
-DB(11)
Cable Conductor Number
35
1
36
2
37
3
38
4
39
5
40
6
41
7
42
8
43
9
44
10
45
11
46
12
47
13
48
14
49
15
50
16
51
17
52
18
53
19
54
20
55
21
56
22
57
23
58
24
59
25
60
26
61
27
62
28
63
29
64
30
65
31
66
32
67
33
68
34
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Signal Name
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
TERMPWR
TERMPWR
RESERVED
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
3-5
3.Installation
3.1.7.
Attaching and Removing the Dust Cover
3.1.7.1.
Attaching the Dust Cover
(1) Align the dust cover’s hinge clips (one on each side) with the pins of the drive bezel.
• The dust cover should be positioned so that the six magnets on the cover’s back face the drive bezel.
• Holding the dust cover at an angle as shown in the figure below, set the hinge clips on top of the bezel pins,
positioning them so that they bracket the pins.
(2) Press down at an angle on each side in turn until you hear the hinge clips click into place.
Caution:
Do not press the dust cover in horizontally from the side. Doing so could cause the dust cover to break.
(3) Close the dust cover.
This completes attachment of the dust cover.
3-6
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3.Installation
3.1.7.2.
Removing the Dust Cover
(1) Open the dust cover.
(2) Holding the dust cover at both corners, carefully raise the dust cover.
The dust cover hinge clips and drive bezel pins uncouple.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
3-7
3.Installation
This page intentionally left blank.
3-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4.Operation
4. Operation
4.1. Summary of LED Indications
The SDX-800V have 3 LEDs. Each LED shows "Tape Motion", "Cleaning Request", and "Replace Tape" as defined.
"Tape Motion" to show the tape motion in the drive.
"Cleaning Request" to be on, when CLEANING is required.
"Replace Tape" to be on, when the tape needs to be replaced. It should be on when a medium error occurred.
All of three LEDs flash fast simultaneously, when the drive is in malfunction.
The following table shows the meaning of each LED indications:
Table 4-1: Meaning of each LED indications
LED
Off
On
Flash Slowly
Flash Fast
All LED Flash Fast
Tape Motion
No Tape
Tape Loaded
Tape Access in Progress
(Write/Read)
Tape Access in Progress
(Others)
H/w Error Occurred
Cleaning Request
Cleaning is Not Necessary
Cleaning Request
Cleaning is Not Completed
Replace Tape
No Media Error Occurred
Media Error Occurred
Media Warning
Flash Fast (0.3sec on/ 0.3sec off)
0.3 sec
Flash Slowly (0.9sec on/ 0.3sec off)
0.9sec
0.3sec
The following table shows the LED indication for each drive status/condition:
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4-1
4.Operation
4.2. Operator Action
4.2.1.
Powering up the SDX-800V
After the initial installation of the SDX-800V has been verified, power can be applied to the unit. The +12V and +5V
power must be applied simultaneously. (See Figure 2-5) The SDX-800V will execute a power-up diagnostic and then
comes ready.
Once the tape has been loaded the SDX-800V sends a CHECK CONDITION response on receipt of the next SCSI
command from the host. The UNIT ATTENTION key is set in the returned REQUEST SENSE data to indicate that
the tape may have been changed. (Sense Key/ASC/ASCQ = 06/28/00)
4.2.2.
Inserting Cassettes
The operator inserts a cassette into the slot on the front panel. As the cassette is inserted, the drive takes it and
automatically loads it into the drive mechanism. The SDX-800V performs a tape load sequence as described in
clause 4.3.1
4.2.3.
Removing Cassettes
The cassette can be removed from the SDX-800V either in response to a SCSI UNLOAD command, or by pressing
the Eject button. The operator uses the Eject button to initiate the unload sequence (see clause 4.3.2). The
mechanism winds the tape to Beginning of Media (BOM), unthreads it, and ejects the cassette from the slot.
Operation of the Eject button is disabled if the host has previously sent a SCSI PREVENT ALLOW MEDIA
REMOVAL command with prevent bit set to one. In this case, pressing the Eject button has no effect, and does not
initiate an Unload sequence. The Eject button returns to normal operation following receipt of an PREVENT ALLOW
MEDIA REMOVAL command with prevent bit clear.
4.2.4.
Hard Reset Hole
Hard reset hole
In case of emergency, you can immediately reset the drive itself by pushing the switch in the “Hard Reset Hole” with
the tip of a pin. However, there is a risk of losing data upon execution of this operation in the Write or Read mode.
The hardware reset operation is only for manufacturing and repair purposes.
4.2.5.
Write-Protecting Cassettes
Cassettes can be write-protected by sliding the tab on the back of the cassette open. In this state, data can be read
from the tape but not written to it.
Caution: The Tape Log, which contains a history of usage of the tape, will not be updated when the cassette is
write-protected. It follows that the Tape Log becomes inaccurate if a cassette is used write-protected, and the media
warning cannot be relied on to indicate that the cassette needs to be copied and replaced.
4-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4.Operation
AIT–1
AIT–2/3/3Ex
AIT-E/1/2 Turbo
4.3. Internal Function
The Load Sequence (Effective for non MIC cassette, only) Refer to 12.2.1. Fast Media
Load/Unload (Effective for MIC cassette, only)
4.3.1.
During load sequence, the following occurs:
(1) The drive mechanism accepts the cassette and threads the tape. The tape is then moved to
Beginning-of-Tape(BOT) and the Reference area is checked to find the tape format. If the format is not
AIT-3Ex, the drive rewinds the tape to BOT and awaits either a Write, Partitioning, Mode Select or an UNLOAD
command.
(2) The System area is then accessed and the System log is read into the drive.
(3) Finally the drive goes on-line.
The Unload Sequence (Effective for non MIC cassette, only) Refer to 12.2.1. Fast
Media Load/Unload (Effective for MIC cassette, only)
4.3.2.
The drive will always write any buffered data out to tape followed by an EOD prior to initiating the Unload sequence.
During this sequence the tape is rewound to BOT and, if the tape is write-enabled, the copy of the tape log held in
RAM is written back to tape. The tape is then rewound to BOM and the tape unthreaded from the mechanism. At this
stage the tape is either retained in the drive or ejected, depending on media removal is enabled by the Prevent Allow
Media Removal command.
In the case of two partition tape the drive detects that the tape has been formatted as a two partition tape when the
Reference Area is read during the load sequence. When the Unload operation begins the drive will then
automatically update the Tape Log for each partition before unloading the tape.
4.3.3.
Power-Fail or SCSI Reset Handling
If there is a power-fail, the SDX-800V performs the following actions, and reverts to its default configuration:
(1) The drive remains positioned at the point where the power-fail or SCSI Reset occurred.
(2) It executes the Power-Up sequence of self-tests. (When power is restored.)
(3) The drive returns CHECK CONDITION status for the first command after the power-fail or Reset. The next
command from the initiator should be a REQUEST SENSE. The drive will return sense data including a sense
key that will indicate that the drive has been reset. (Sense Key / ASC / ASCQ = 06/29/00)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4-3
4.Operation
4.3.4.
Diagnostic and Normal Status Displays
This chapter describes LED displays while the SDX-800V is starting up. When power is turned on, the SDX-800V will
go through its diagnostics to reach normal status. When a failure is detected during diagnostics, the LEDs show that
the SDX-800V is out of order and needs to be repaired.
Note: When power is turned on, the all LED on before the front panel test.
4.3.4.1.
Diagnostic Status Display
The SDX-800V starts with its Diagnostic function. This is made up of the Front Panel Test and the Kernel Test.
Front Panel Test
LED display sequence:
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
0.3sec
TAPE
MOTION
on
on
on
on
on
CLEANING
REQUEST
on
on
on
on
-
REPLACE
TAPE
on
on
Front Panel Test
Kernel Test
on
on
-
This function is for checking TAPE MOTION, CLEANING REQUEST and REPLACE TAPE LEDs and the related
circuits. No errors can be generated as this test is only for operator verification of indicator operation.
Kernel Test
After the Front Panel Test, the SDX-800V checks its internal units. When a Diagnostic error occurs, the SDX-800V
must be powered off. The SDX-800V will not work and should be checked or repaired immediately.
The purpose of the diagnostic firmware to test the SDX-800V electronics for functionality. If the diagnostic request
comes from the host through SCSI, then the results are reported through SCSI.
If the electronics are not functioning, the diagnostic firmware tries to isolate the non-functional area to a specific
Failed Unit. Given a failure, the firmware decides on a hierarchical basis which Unit to designate as the Most Suspect
Failed Unit (MSFU). The confidence in this decision is intended to be 95%. For the details of Diagnostics, see clause
7.2.6
4.3.4.2.
Normal Status Display
After the Diagnostic Display, when no failures are detected, the SDX-800V is in the Normal Status. The LEDs show
various Normal Status (No Error) indications as shown in the table below:
4-4
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4.Operation
Table 4-2: Normal LED indications
LED
Off
On
Flash Slowly
Flash Fast
All LED Flash Fast
Tape Motion
No Tape
Tape Loaded
Tape Access in Progress
(Write/Read)
Tape Access in Progress
(Others)
H/w Error Occurred
Cleaning Request
Cleaning is Not Necessary
Cleaning Request
Cleaning is Not Completed
Replace Tape
No Media Error Occurred
Media Error Occurred
Media Warning
4.4. Tape Alert
1.
Tape Alert is a new specification for tape drive and library diagnostics. With this specification, any storage
software application can access detailed device diagnostic information and interpret the information in a
standard way.
2.
Tape Alert information shall be accessed using LOG SENSE page 2Eh. Tape Alert configuration shall be
performed using MODE SELECT page 1Ch. The MODE SENSE and MODE SELECT configuration of the Tape
Alert interface is compatible with the information exceptions control page (1Ch). The application client shall first
check the tape drive to determine whether it supports the Tape Alert log page (0x2Eh). The default application
client access to the Tape Alert log page shall be performed using a polling method, with the page control bits in
the LOG SENSE command set to 00h.
3.
At minimum, the Tape Alert log page shall be read from the tape drive/autoloader device for the following:
a.
At the beginning of a Write/read job, even if the media is not loaded
b.
Immediately after an unrecoverable error during the write/read job
c.
At the end of each tape when the write/read job spans multiple tapes. If the tape is to be ejected then the
log page shall be read before the tape cartridge is ejected
d.
At the end of a write/read job
4.
The application client may also poll the Tape Alert log page at regular intervals (e.g. every 60 seconds) while the
tape drive is idle. The application client may use the Tape Alert mode page (1Ch) to configure other access
methods, depending on what options are supported by the tape drive.
5.
Each time the application client reads the Tape Alert log page, it shall check all 64 flags to discover which are set
(there may be more than one). The definitions of the 64 flags are device type specific. There is one definition for
tape drive/autoloader devices, and a different definition for stand-alone changer devices (in libraries). For each
flag set, the application client shall communicate the defined error message and severity for that flag to the user
and log it. If multiple flags are set simultaneously, they shall be displayed together in ascending order of
severity. The information read in the Tape Alert flags shall not in itself cause the application client to stop a
current backup or restore operation.
4.5. Tape Format
The SDX-800V is an implementation of the Advanced Intelligent Tape (AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2,
AIT-2 Turbo, AIT-3 and AIT-3Ex) format, a standard developed by Sony for 8mm data storage drives.
AIT-E Turbo, AIT-1, AIT-1 Turbo, AIT-2, AIT-2 Turbo, AIT-3
- C1,C2, first and second level Error Correction Code, providing correction for random and Burst Symbol errors.
- C3 ECC, third level Error Correction Code, providing correction across frames within groups
AIT-3Ex
- C1, first level Error Correction Code, providing correction for random and Burst Symbol errors.
- C3 ECC, third level Error Correction Code, providing correction across frames within groups
- Read-After-Write, where data is verified immediately after it is written and re-written if there is any error.
- Randomizer, to reduce inter-symbol interference.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4-5
4.Operation
4.6. Maintenance, Troubleshooting and Service
4.6.1.
Head Cleaning
In case of SDX-800V,a cleaning function which prevents and recovers from head contamination is built in the drive.
However, to keep optimum Read/Write performance, cleaning cassette is recommended to use.
4.6.1.1.
Message When Cleaning Cassette is Necessary
When drive displays cleaning cassette requirement, (Cleaning Request LED is on or in case of SCSI, CLN bit is set
at Request Sense.) use specified cleaning cassette (model name: SDX3X-CL)
4.6.1.2.
The condition of Cleaning Request
(1) Read/Write performance decreased.
(2) Every 100 hours of operation.
Note: (2) is enable when Periodic Cleaning Req Dip-SW is on. (Refer to 3.1)
4.6.1.3.
Usage of Cleaning Cassette
(3) Drive displays cleaning cassette requirement.
(4) When specified cleaning cassette is inserted, automatic cleaning operation starts and when it’s over, the
cassette is ejected.
(5) One cleaning cassette can be used approximately 50 times in average.
(6) When the cleaning cassette is not ejected without doing cleaning, it is possible that there were no more
cleaning tape left. Since cleaning tape cannot be used twice, please insert new cleaning cassette in this case.
(7) SDX3X-CL can be inserted in other drives or consumer 8 mm drives, but you cannot expect good effect.
(8) The drive will not eject cleaning cassette for consumer drives or for any other format. “Cleaning is Not
Completed” is indicated by the Cleaning Request LED.
4.6.2.
Troubleshooting Guide
Problems encountered while operating the Sony SDX-800V tape drive fall into two categories: Operational problems
and Read/Write problems.
Operational problems include any conditions that prevent the tape drive from operating. Operational problems
usually are discovered the first time the drive is installed on a system or when the system configuration is changed or
physically moved.
Read/Write problems include conditions that effect the transfer of data to and from the tape drive. Commands such
as REWIND, REQUEST SENSE and UNLOAD perform normally but data transfers fail.
The following clauses describe the recommended procedures for solving operational and read/write problems.
4.6.2.1.
Operational Problems
The tape drive will not accept a tape cartridge
Withdraw the tape cassette and turn the power to drive off, wait 5 seconds, then back on. Observe the drive for a
normal power up sequence (see clause 4.3.4). If the LEDs do not light, check the power supply and power cable
connection. If the drive completes the power on sequence normally but still won’t accept the tape cassette, the drive
may be defective.
4-6
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4.Operation
A tape may already be in the drive. Tape LED is on. Press EJECT to remove the first tape. The power has been
removed from the drive with a tape loaded. When the power is restored to the drive, it will detect the tape and rewind
the tape to BOT. Press EJECT remove the cassette.
A tape is in the drive and will not eject.
If the SCSI command PREVENT ALLOW MEDIA REMOVAL (with Prevent bit set to one) has been sent to the drive,
the cartridge will be retained in the drive even after an UNLOAD command. The EJECT button is also disabled. Send
an PREVENT ALLOW MEDIA REMOVAL (with prevent bit clear) command, issue a SCSI bus reset, or power the
drive off and back on to override this condition.
If Tape is still in the drive after following the above procedure. The drive has a serious problem and should be
returned to Sony for repair with the tape in place.
Note: If it is absolutely mandatory that the tape cassette be removed prior to returning the drive for repair the
following Emergency Cassette Removal procedure should be followed:
Caution: This procedure should only be attempted by a mechanically qualified person and will probably result in the
tape being unusable. Do not proceed if further damage to the tape drive would be done.
Reel motor
Loading motor
Photo 1: Emergency Tape Removal Procedure
Emergency Cassette Removal Procedure
1.
Remove the drive from the chassis or enclosure to allow access to the bottom of the drive.
2.
Remove the drive’s top cover.
3.
Locate the small opening in the bottom of the drive and insert the tip of a precision screwdriver so that the
Loading motor shaft can be rotated.
4.
Rotate the motor shaft clockwise to bring the threading mechanism back to the initial position.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4-7
4.Operation
A
Tape guide surface
Tape guide surface
C
C
B
Cartridge
Detail A
Photo 2: The Initial Position of the Threading Mechanism
Caution:
Stop rotating the motor shaft immediately, when the guide B (see detail A of Photo 2) gets to the area
below the line C-C (This line is defined by 2 circular tape guide surfaces of the cartridge).
Otherwise the gear of the drive can be damaged.
5.
Before manual eject procedure, tape slack must be removed in order to prevent tape damage. Rotate the gear
mechanism located on the bottom of the drive counterclockwise to tighten the tape.
6.
After the tape slack has been removed, continue to turn the Loading moter shaft located on the bottom of the
drive clockwise by a precision screwdriver until the tape cartridge is lifted out of the drive mechanism and is
ejected.
7.
Return the drive to Sony for repair.
4-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4.Operation
The drive powers up properly and loads and unloads tapes but will not respond to any SCSI commands.
(A) If SCSI bus reset does not cause the drive to reset (same as power-on self test):
- Check the SCSI cable connectors
- Check SCSI cable pin one is aligned with the SCSI connector pin one
- Check for a broken cable or defective connector
- Try another known good SCSI device in the same location
(B) If SCSI bus reset causes the drive to reset then the problem is with the SCSI bus addressing or termination.
- Check that the SCSI bus ID jumper is set for the proper address (see clause 3.1.1)
- Check SCSI bus termination. The two SCSI devices at the ends of the bus should be terminated. No other
units should have terminators installed
Note: The strength of the SCSI bus signals can be affected if too many terminators are installed (Signal drivers can
be damaged as well)
4.6.2.2.
Read/Write Problems
To prevent read/write errors, follow the cleaning recommendation in clause 4.6.1 If a read/write error occurs, a
combination of the following steps should correct the problem.
- Remove the tape.
- Clean the drive with the AIT cleaning cartridge.
- Load a new tape in the drive.
- Retry the operation.
Note: If these steps do not correct the problem the drive may be defective and should be returned to Sony for
service.
4.6.2.3.
Replace Tape
When Media Error occur drive will indicate that tape is bad by turning on the Replace Tape LED. If this condition
occurs, a combination of the following steps should correct the problem.
- Remove the tape.
- Clean the drive with the AIT cleaning cartridge.
- Load a new tape in the drive.
- Retry the operation.
Note: If these steps do not correct the problem the drive may be defective and should be returned to Sony for
service.
4.6.2.4.
Media Warning
When a Media Warning threshold is exceeded the drive will indicate that the tape is bad by flashing the Replace
Tape LED MEW (Media Warning) bit is 1. The indicator will be on for 0.9 seconds, off for 0.3 seconds. The Tape
Motion and Cleaning Request LEDs will operate normally. If this occurs, the data on the cassette should be copied
onto a new one and the old cassette discarded. This status is cleared by unloading the cassette.
4.6.3.
Clearance for Service
All servicing is performed only after removal of the SDX-800V from is mounting. It is recommended that in mounting
the drive into a chassis provisions should be made to allow easy access to the mounting screws (see Figure 2-2).
4.6.4.
Packaging for Return to Sony
The drive should be returned in its original packaging. Sony will not take responsibility for shipping damage caused
to an improperly packaged drive.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
4-9
4.Operation
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4-10
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
5. SCSI Interface
5.1. Introduction
The Sony SDX-800V uses the SCSI interface to connect to the host system. The Small Computer System Interface
(SCSI) is an industry standard interface, approved by the American National Standards Institute (ANSI). It is
recommended that this document be used along with the ANSI standard document. The ANSI specification defines
the interface in general while this document describes the specific implementation for this unit. The SCSI
documents, listed in detail in clause 1.2, offer the information required to integrate this unit with SCSI-compatible
computer systems. This clause includes four sub-clauses:
• Introduction
• SCSI Bus Operation
• SCSI Messages
• SCSI Status
Note: The details of each SCSI Command are covered in Section 6.
The Introduction provides general, high-level information. For the hardware description and the installation
requirements, see Section 2.The SCSI protocol supported by the unit are covered in the Bus Operation, Message,
and Status clauses.
5.1.1.
Overview of the SCSI Interface
The SCSI implementation provides the unit with a standard set of features and functions. These include:
• Asynchronous and Synchronous communication modes
• Single-ended / Differential Configurations
• Full implementation of Mandatory commands
• Implementation of most sequential non-Mandatory commands
• Ultra160 SCSI Interface
i. Cyclic Redundancy Check (CRC)
ii. Double Transition Clocking (DT)
iii. Domain Validation
5.1.2.
Supported Messages
The following messages are supported: (alphabetic order)
* Abort
* Bus Device Reset
* Command Complete
* Disconnect
* Extended Message - Synchronous Data Transfer Request
* Extended Message - Wide Data Transfer Request
* Extended Message - Parallel Protocol Request
* Identify (w/ & w/o disconnect)
* Ignore Wide Residue
* Initiator Detected Error
* Message Parity Error
* Message Reject
* No Operation
* Restore Pointers
* Save Data Pointer
For implementation details on these messages, see clause 5.3.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-1
5.SCSI Interface
5.1.3.
Supported Commands
The following commands are supported. They include all Mandatory and Extended commands, most Optional
commands.
Table 5-1: Supported SCSI Commands
Command Name
ERASE
INQUIRY
LOAD/UNLOAD
LOCATE
LOG SELECT
LOG SENSE
MODE SELECT (6)
MODE SELECT (10)
MODE SENSE (6)
MODE SENSE (10)
PERSISTENT RESERVE IN
PERSISTENT RESERVE OUT
PREVENT ALLOW MEDIUM REMOVAL
READ
READ ATTRIBUTE
READ BLOCK LIMITS
READ BUFFER
READ POSITION
RECEIVE DIAGNOSTIC RESULTS
RELEASE (6)
RELEASE (10)
REPORT DENSITY SUPPORT
REPORT DEVICE IDENTIFIER
REPORT LUNS
REQUEST SENSE
RESERVE (10)
RESERVE (10)
REWIND
SEND DIAGNOSTIC
SET DEVICE IDENTIFIER
SPACE
TEST UNIT READY
WRITE
WRITE ATTRIBUTE
WRITE BUFFER
WRITE FILEMARKS
5-2
Operation Code
19h
12h
1Bh
2Bh
4Ch
4Dh
15h
55h
1Ah
5Ah
5Eh
5Fh
1Eh
08h
8Ch
05h
3Ch
34h
1Ch
17h
57h
44h
A3h
A0h
03h
16h
56h
01h
1Dh
A4h
11h
00h
0Ah
8Dh
3Bh
10h
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
5.2. SCSI Bus Operation
5.2.1.
Typical SCSI Operation
This example describes the typical SCSI bus sequence between the host and the drive.
1.
After waiting for the bus clear time the Host arbitrates for the SCSI bus. It does this by asserting BSY and the
data line corresponding to its bus ID. If any other devices wish to compete for the bus, they also assert BSY
and the appropriate data line. Each arbitrating device then inspects the data bus. The device with the highest
ID wins the bus. All the other devices must release BSY and their data lines.
2.
The Host attempts to select the target by asserting SEL and releasing BSY. The Host maintains its ID and
asserts the target’s ID on the data bus. Each target then checks the data lines. If the target’s ID matches that
on the data bus, it accepts selection by asserting BSY. Once the Host has detected BSY being asserted, it
asserts ATN to indicate that it wants the target to go to the MESSAGE OUT phase. The Host releases SEL.
3.
The target now has control of the SCSI bus and it is the target which switches between phases. The target
responds to the ATTENTION condition and initiates the MESSAGE OUT phase. The Host sends an IDENTIFY
message which tells the target which logical unit the Host wishes to talk to. The fact that the target responds to
the ATN indicates to the Host that the target can accommodate more than just a COMMAND COMPLETE
message.
4.
The target initiates the COMMAND phase and transfers the Command Descriptor Block from the Host. In the
COMMAND phase, the target decodes the command and either executes the command (TEST UNIT READY)
or sets itself up for a data transfer to the Host (READ, WRITE, and INQUIRY etc.). The target then either
switches to the STATUS phase, if the command is complete, or if it is ready to transfer data, the DATA phase.
5.
The data transfer length is set by the Host in the Command Descriptor Block. The target will remain in the
DATA phase until all the data is transferred.
6.
The target then initiates a STATUS phase and transfers one byte to the Host to indicate whether the target has
successfully completed the command. If the target has detected an error, the next command that the Host is
expected to send is REQUEST SENSE. This allows the target to return further status information to the Host.
7.
The target completes the SCSI sequence by going to the MESSAGE IN phase and transferring a COMMAND
COMPLETE message to the Host. The target then releases BSY allowing the bus to go to the BUS FREE
state.
5.2.2.
Disconnect
In order to improve bus usage and performance, the unit is capable of temporarily disconnecting from the bus,
consequently allowing other initiator-target communications to take place. To do so, however, the Host needs to
support Disconnect/ Re-select. The mechanism for performing the Disconnect/ Re-select procedure is implemented
as follows:
1.
The Host arbitrates for the SCSI bus and upon winning the bus it proceeds to select target device. Prior to
releasing SEL and completing the selection phase, the Host asserts the ATN line. The Host then releases SEL
and BSY to allow the target to assume control of the SCSI bus. By asserting ATN, the host indicates that the
target should go to a MESSAGE OUT phase.
2.
At this point, the target responds to the Host ATTENTION condition by initiating a MESSAGE OUT phase and
receiving a message from the Host which tells it whether or not the Host allows Disconnects for the desired
logical unit on the target.
3.
If the Host does not send an Identify message, the target assumes that Disconnects are not permitted.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-3
5.SCSI Interface
4.
The I/O activity from this point is controlled entirely by the target. The target initiates the COMMAND phase
and reads in the Command Descriptor Block (CDB) from the Host. If the Host has sent an Identify message
with the Disconnect permission bit set, then the target will immediately disconnect from the bus after the entire
CDB has been received.
5.
The Disconnect process occurs when the target initiates a MESSAGE IN phase and sends a DISCONNECT
message back to the Host. This message may be preceded by a SAVE DATA POINTERS message byte if the
Disconnect is performed in the middle of the DATA phase. Following the MESSAGE IN phase, the target frees
the bus by releasing the BSY.
6.
The host now waits for the target to perform Re-selection. When ready, the target re-selects the Host and
sends an Identify message via a MESSAGE IN phases, indicating the specific logical unit with which the
subsequent communications are to take place. Usually, the target will proceed from the MESSAGE IN phase
to either a DATA or a STATUS phase. If the Host had been previously told to SAVE DATA POINTERS, then
the target’s Identify message implies that the Host restores its data pointers upon re-selection; in other words,
it is not necessary for the target to send a specific RESTORE DATA POINTERS to the Host in such context.
7.
When doing a large data transfer, the target may choose to divide the entire transfer into several smaller
transfers. This allows the target to free the SCSI bus whenever it needs to perform its own system tasks not
immediately related to the actual data transfer over the SCSI bus. The target will not lock the bus into the
DATA phase if it is not presently ready to efficiently execute the transfer. After the data transfer is completed,
the target enters a STATUS phase and sends a single status byte to the Host. It then proceeds to a MESSAGE
IN phase, during which the target sends a COMMAND COMPLETE message. Finally, the target frees the bus
and the current command is considered completed.
8.
The Host may change Disconnect permission at any time after the SELECTION phase by asserting ATN and
sending an Identify message via a MESSAGE OUT phase. If the Host, however, performs this action during a
DATA phase, it is possible that the target will not notice the change in Disconnect permission status until past
the end of the current bus phase.
5.3. Message Specification
This clause includes all SCSI messages. Both supported and non-supported messages are listed. Elements of this
clause come from clause 5, Logical Characteristics, of the SCSI standard. The message system allows
communication between an initiator and a target for the purpose of physical path management. The table below lists
the Messages supported by the SDX-800V.
The SDX-800V supports the Synchronous Data Transfer Request Extended Message, and the Wide Data Transfer
Request Message.
Table 5-2: Message Descriptions
Code
00
01
02
03
04
05
06
07
08
09
0C
23
80-CO
5-4
Description
COMMAND COMPLETE
EXTENDED MESSAGE
SAVE DATA POINTER
RESTORE POINTERS
DISCONNECT
INITIATOR DETECTED ERROR
ABORT
MESSAGE REJECT
NO OP
MESSAGE PARITY ERROR
BUS DEVICE RESET
IGNORE WIDE RESIDUE
IDENTIFY
Direction
In
*
*
*
*
*
*
*
*
Out
*
*
*
*
*
*
*
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
5.3.1.
COMMAND COMPLETE (00h)
This message is sent from a target to an initiator to indicate that the execution of a command or a series of linked
commands has completed and valid status has been sent to the initiator. After successfully sending this message,
the target goes to the BUS FREE phase by releasing BSY.
When received as a target, it will be handled as an illegal message, the unit will return MESSAGE REJECT and will
enter the status phase reporting CHECK CONDITION with the sense key set to COMMAND ABORTED.
5.3.2.
EXTENDED MESSAGE (01h)
5.3.2.1.
PARALLEL PROTOCOL REQUEST (04h)
PARALLEL PROTOCOL REQUEST messages are used to negotiate a synchronous data transfer agreement, a
wide data transfer agreement, and set the protocol options between two SCSI devices. Negotiations using this
message shall only be initiated by initiators. A Parallel Protocol Request message has the following format:
PARALLEL PROTOCOL REQUEST
Bit
Byte
7
6
5
4
3
2
0
EXTENDED MESSAGE (01h)
1
EXTENDED MESSAGE LENGTH (06h)
2
PARALLEL PROTOCOL REQUEST (04h)
3
TRANSFER PERIOD FACTOR
4
RESERVED
5
REQ/ACK OFFSET
6
TRANSFER WIDTH EXPONENT (m)
7
RESERVED
QAS_REQ
1
0
DT_REQ
IU_REQ
TRANSFER PERIOD FACTOR FIELD
Code
09h
0Ah
0Bh
0Ch
0Dh-18h
19h-31h
32h-FFh
Description
Transfer period equals 12.5 ns (Fast-80 data is latched every 12.5 ns). This code is only
valid if the protocol options field has a value selected that supports double transition data
transfer (DT_REQ is one)
Transfer period equals 25 ns (Fast-40 data is latched every 25 ns or 30.3 ns).
Transfer period equals 30.3 ns (Fast-40 data is latched every 25 ns or 30.3 ns).
Transfer period equals 50 ns (Fast-20).
Transfer period equals the period factor x 4 (Fast-20).
Transfer period equals the period factor x 4 (Fast-10).
Transfer period equals the period factor x 4
For single transition (ST) synchronous data transfer the REQ/ACK OFFSET is the maximum number of REQ
assertions allowed to be outstanding before a corresponding ACK assertion is received at the target. The size of a
data transfer may be 1 or 2 bytes depending on the values in the transfer width exponent field.
For double transition (DT) synchronous data transfer the REQ/ACK OFFSET is the maximum number of REQ
transitions allowed to be outstanding before a corresponding ACK transition is received at the target. The size of a
data transfer shall be 2 bytes.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-5
5.SCSI Interface
The TRANSFER WIDTH EXPONENT field defines the transfer width to be used during DATA IN phases, and DATA
OUT phases. The transfer width that is established applies to both SCSI devices. Valid transfer widths are 8 bits
(m=00h) and 16 bits (m=01h) if all the protocol options bits are zero. The only valid transfer width is 16 bits (m=01h)
if any of the protocol options bits are one.
QAS_REQ bit is not supported and shall be set to zero.
IU_REQ bit is not supported and shall be set to zero.
DT_REQ bit of zero indicates that DT DATA phases are to be disabled when received from the initiator and that DT
DATA phases are disabled when received from the target. A DT_REQ bit of one indicates that DT DATA phases are
to be enabled when received from the initiator and that DT DATA phases are enabled when received from the target.
A data transfer agreement only applies to the two SCSI devices that negotiate the agreement. Separate data transfer
agreements are negotiated for each pair of SCSI devices. The data transfer agreement only applies to DATA
phases.
A PARALLEL PROTOCOL REQUEST message exchange shall be initiated by an initiator whenever a previously
arranged parallel protocol agreement may have become invalid. The agreement becomes invalid after any condition
that may leave the parallel protocol agreement in an indeterminate state such as:
a)
b)
c)
d)
After a hard reset
After a TARGET RESET message
After a power cycle
After a change in the transceiver mode (e.g., LVD mode to SE mode)
5.3.2.2.
SYNCHRONOUS DATA TRANSFER REQUEST (01h)
This is sent by either the initiator or the target as the first byte of a multiple-byte message. When acting as an initiator,
the unit will not send any Extended Messages. No Vendor Unique codes are implemented and only the Synchronous
Data Transfer Request code is supported. Any other message code is handled as an illegal message; the unit will
return MESSAGE REJECT and will continue. A Synchronous Data Transfer Request message has the following
format:
Table 5-3: Synchronous Data Transfer Request
Byte
0
1
2
3
4
Value
01h
03h
01h
M
X
Description
Extended message
Extended message length
SYNCHRONOUS DATA TRANSFER REQUEST code
Transfer period (m times 4 nanoseconds)
REQ/ACK offset
A SYNCHRONOUS DATA TRANSFER REQUEST (SDTR) message exchange shall be initiated by a SCSI device
whenever a previously-arranged data transfer agreement may have become invalid. The agreement becomes
invalid after any condition which may leave the data transfer agreement in an indeterminate state such as:
(1) after a hard reset condition
(2) after a BUS DEVICE RESET message and
(3) after a power cycle.
In addition, a SCSI device may initiate an SDTR message exchange whenever it is appropriate to negotiate a new
data transfer agreement (either synchronous or asynchronous). SCSI devices that are capable of synchronous data
transfers shall not respond to an SDTR message with a MESSAGE REJECT message.
The SDTR message exchange establishes the permissible transfer periods and the REQ/ACK offsets for all logical
units and target routines on the two devices. This agreement only applies to data phases. The transfer period factor
times four is the value of the transfer period.
Transfer period is the minimum time allowed between leading edges of successive REQ pulses and of successive
ACK pulses. The SDX-800V supports the following transfer periods:
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SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
Table 5-4: Synchronous Data Transfer Rates
Transfer Period (hex)
Transfer Rate (MB/s) - narrow
Transfer Rate (MB/s)- wide
9
80
160
0A
40.0
80.0
0C
20.0
40.0
19
10.0
20.0
1F
8.0
16.0
26
2C
32
6.67 5.71 5.00
13.34 11.42 10.00
38
4.44
8.88
REQ/ACK offset: is the maximum number of REQ pulses allowed to be outstanding before the leading edge of its
corresponding ACK pulse is received at the target. A REQ/ACK offset value of ZERO shall indicate asynchronous
data transfer mode. The SDX-800V supports synchronous data transfer REQ/ACK offset values from 1 to 127.
The originating device (the device that sends the first of the pair of SDTR messages) sets its values according to the
rules above to permit it to receive data successfully. If the responding device can also receive data successfully with
these values (or smaller transfer periods or larger REQ/ACK offsets or both), it returns the same values in its SDTR
message. If it requires a larger transfer period, a smaller REQ/ACK offset, or both in order to receive data
successfully, it substitutes values in its SDTR message as required, returning unchanged any value not required to
be changed. Each device when transmitting data shall respect the limits set by the other’s SDTR message, but it is
permitted to transfer data with larger transfer periods, smaller REQ/ACK offsets, or both than specified in the other’s
SDTR message. The successful completion of an exchange of SDTR messages implies an agreement as follows:
Responding Device SDTR response
(1) Non-ZERO REQ/ACK offset
(2) REQ/ACK offset equal to ZERO
(3) MESSAGE REJECT message
Implied Agreement
Each device transmits data with a transfer period equal to or
greater than and a REQ/ACK offset equal to or less than the values
received in the other device’s SDTR message.
Asynchronous transfer
Asynchronous transfer
If the initiator recognizes that negotiation is required, it asserts the ATN signal and sends a SDTR message to begin
the negotiating process. After successfully completing the MESSAGE OUT phase, the target shall respond with the
proper SDTR message. If an abnormal condition prevents the target from returning an appropriate response, both
devices shall go to asynchronous data transfer mode for data transfers between the two devices.
Following target response (1) above, the implied agreement for synchronous operation shall be considered to be
negated by both the initiator and the target if the initiator asserts the ATN signal and the first message out is either
MESSAGE PARITY ERROR or MESSAGE REJECT. In this case, both devices shall go to asynchronous data
transfer mode for data transfers between the tow devices. For the MESSAGE PARITY ERROR case, the implied
agreement shall be reinstated if a re-transmittal of the second of the pair of messages is successfully accomplished.
After two retry attempts, if the target receives a MESSAGE PARITY ERROR message, it shall terminate the retry
activity. This may be done either by changing to any other information transfer phase and transferring at least one
byte of information or by going to the BUS FREE phase. The initiator shall accept such action as aborting the
negotiation, and both devices shall go to asynchronous data transfer mode for data transfer between the two
devices.
If the target recognizes that negotiation is required, it sends an SDTR message to the initiator. Prior to releasing the
ACK signal on the last byte of the SDTR message from the target, the initiator shall assert the ATN signal and
respond with its SDTR message or with a MESSAGE REJECT message. If an abnormal condition prevents the
initiator from returning an appropriate response, both devices shall go to asynchronous data transfer mode for data
transfers between the two devices.
Following an initiator's responding SDTR message, an implied agreement for synchronous operation shall not be
considered to exist until the target leaves the MESSAGE OUT phase, indicating that the target has accepted the
negotiation. After two retry attempts, if the target has not received the initiator's responding SDTR message, it shall
go to the BUS FREE phase without any further information transfer attempt. This indicates that a catastrophic error
condition has occurred. Both devices shall go to asynchronous data transfer mode for data transfer between the two
devices.
If, following an initiator's responding SDTR message, the target shifts to MESSAGE IN phase and the first message
in is MESSAGE REJECT, the implied agreement shall be considered to be negated and both devices shall go to
asynchronous data transfer mode for data transfers between the two devices.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-7
5.SCSI Interface
The implied synchronous agreement shall remain in effect until a BUS DEVICE RESET message is received, until a
hard reset condition occurs, or until one of the two SCSI devices elects to modify the agreement. The default data
transfer mode is asynchronous data transfer mode. The default data transfer mode is entered at power on, after a
BUS DEVICE RESET message, or after a hard reset condition.
5.3.2.3.
WIDE DATA TRANSFER REQUEST
Byte
0
1
2
3
Value
01
02
03
m
Extended message
Extended message length
WIDE DATA TRANSFER REQUEST code
Transfer Width exponent
A WIDE DATA TRANSFER REQUEST (WDTR) message exchange shall be initiated by a SCSI device whenever a
previously-arranged transfer width agreement may have become invalid. The agreement becomes invalid after any
condition which may leave the data transfer agreement in an indeterminate state such as:
(1) after a hard reset condition;
(2) after a BUS DEVICE RESET message and;
(3) after a power cycle.
In addition, a SCSI device may initiate a WDTR message exchange whenever it is appropriate to negotiate a new
transfer width agreement. SCSI devices that are capable of wide data transfers (greater than eight bits) shall not
respond to a WDTR with a MESSAGE REJECT message.
The WDTR message exchange establishes an agreement between two SCSI devices on the width of the data path
to be used for DATA phase transfers between the two devices. This agreement applies to DATA IN and DATA OUT
phases only. All other information transfer phases shall use an eight-bit data path.
If a SCSI device implements both wide data transfer option and synchronous data transfer option, then it shall
negotiate the wide data transfer agreement prior to negotiating the synchronous data transfer agreement. If a
synchronous data transfer agreement is in effect, then a SCSI device that accepts a WDTR message shall reset the
synchronous agreement to asynchronous mode.
The transfer width is two to the transfer width exponent bytes wide. The transfer width that is established applies to
logical units on both SCSI devices. Valid transfer widths are 8 bits (m=00h), and 16 bits (m=01h). Values of m=02
and greater are reserved.
The originating SCSI device (the SCSI device that sends the first of the pair of WDTR messages) sets its transfer
width value to maximum data path width it elects to accommodate. If the responding SCSI device can also
accommodate this transfer width, it returns the same value in its WDTR message. If it requires a smaller transfer
width, it substitutes the smaller value in its WDTR message. The successful completion of an exchange of WDTR
messages implies an agreement as follows:
Responding device WDTR response
Implied agreement
a) Non-ZERO transfer width
Each device transmits and receives data with a transfer width
equal to the responding SCSI device's transfer width.
Eight -bit data transfer
Eight -bit data transfer
b) Transfer width equal to ZERO
c) MESSAGE REJECT message
If the initiator recognizes that negotiation is required, it asserts the ATN signal and sends a WDTR message to begin
the negotiating process. After successfully completing the MESSAGE OUT phase, the target shall respond with the
proper WDTR message. If an abnormal condition prevents the target from returning an appropriate response, both
devices shall go to eight-bit data transfer mode for data transfers between the two devices.
5-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
Following target response (1) above, the implied agreement for wide data transfers shall be considered to be
negated by both the initiator and the target if it the initiator asserts ATN and the first message out is either MESSAGE
PARITY ERROR or MESSAGE REJECT. In this case, both devices shall go to eight-bit data transfer mode for data
transfers between the two devices. For the MESSAGE PARITY ERROR case, the implied agreement shall be
reinstated if a re-transmittal of the second of the pair of messages is successfully accomplished. After a
vendor-specific number of retry attempts (greater than ZERO), if the target receives a MESSAGE PARITY ERROR
message, it shall terminate the retry activity. This may be done either by changing to any other information transfer
phase and transferring at least on byte of information or by going to the BUS FREE phase. The initiator shall accept
such action as aborting the negotiation and both devices shall go to eight -bit data transfer mode for data transfers
between the two devices.
The implied transfer width agreement shall remain in effect until a BUS DEVICE RESET message is received, until a
hard reset condition occurs, or until one of the two SCSI devices elects to modify the agreement. The default data
transfer width is eight-bit data transfer mode. The default data transfer mode is entered at power on m, after a BUS
DEVICE RESET message, or after a hard reset condition.
5.3.3.
SAVE DATA POINTER (02h)
This message is sent from a target to the initiator at the end of a Data Phase to request that the initiator save a copy
of the present active data pointer for the currently attached logical unit. The unit will accept this message when in the
initiator mode. As a target, it will send this message prior to a disconnect. When received as a target, it will be
handled as an illegal message, the unit will return MESSAGE REJECT and will enter the status phase reporting
CHECK CONDITION with the sense key set to COMMAND ABORTED.
5.3.4.
RESTORE POINTERS (03h)
This message is sent from a target to direct the initiator to restore the most recently saved pointers for the currently
attached logical unit to the active state. Pointers to the command, data, and status locations for the logical unit will be
restored to the active pointers. Command and status pointers will be restored to the beginning of the present
command and status areas. The data pointer will be restored to the value at the beginning of the data area in the
absence of a SAVE DATA POINTER message or to the value at the point at which the last SAVE DATA POINTER
message occurred for that logical unit.
The unit sends a RESTORE POINTERS message. Rather, it relies on the implicit restore pointers inherent in a
re-selection.
When acting as initiator, the unit will accept a RESTORE POINTERS message before resending a previously
unsuccessful status or data transfer. It doesn’t send a RESTORE POINTERS for re-selection but relies on the
implicit restore pointers in re-selection.
When received as a target, it will be handled as an illegal message; the unit will return MESSAGE REJECT and will
continue.
5.3.5.
DISCONNECT (04h)
This message is sent from a target to inform an initiator that the present physical path is going to be broken (the
target plans to disconnect by releasing BSY). Later, reelection will be required in order to complete the current
operation.
Note: The initiator detects a catastrophic error condition when the BUS FREE phase occurs (other than as result of
a RESET condition) without first receiving a DISCONNECT or COMMAND COMPLETE message. If the target
intentionally creates this condition, the target clears the current command. This message does not cause the initiator
to save the data pointer.
The unit will support this message as an initiator. As a target, the unit supports this message and will disconnect if
allowed by the initiator.
When received as a target, it will be handled as an illegal message; the unit will return MESSAGE REJECT and will
continue.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-9
5.SCSI Interface
5.3.6.
INITIATOR DETECTED ERROR (05h)
This message is sent from an initiator to inform a target that an error (e.g.: parity error) has occurred that does not
prevent the target from re-trying the operation. At this point, present pointer integrity is not assured. A RESTORE
POINTERS message or a disconnect followed by a re-selection, will cause the pointers to be restored to their
previously defined state.
This message will not be sent by the drive, when the drive is acting as an initiator. When received as a target the unit
will enter the status phase reporting CHECK CONDITION with the sense key set to COMMAND ABORTED.
5.3.7.
ABORT (06h)
This message is sent from the initiator to the target to clear the present operation. All pending data and status from
the affected logical unit is cleared, and the target goes to the BUS FREE phase. This message can be sent to a
logical unit that is not currently performing an operation for the initiator.
A transaction which has not yet been acknowledged with a good Status byte will cause the transaction to be aborted.
If a transaction has already been acknowledged, the abort will force a Write of any pending data. The device will
proceed directly to BUS FREE state.
5.3.8.
MESSAGE REJECT (07h)
This message is sent from either the initiator or target to indicate that the last message it received was inappropriate
or has not been implemented.
In order to indicate its intentions of sending this message, the initiator asserts the ATN signal prior to its release of
ACK for the REQ ACK handshake of the message that is to be rejected. Message Reject is issued in response to any
messages which the unit considers to be illegal or not supported. The illegal message will cause the current
command to be aborted and the unit will enter the status phase reporting CHECK CONDITION with the sense key
set to COMMAND ABORTED.
When received as a target, if the unit was previously in Message In phase (i.e.: sending messages to the host) then
MESSAGE REJECT will cause the unit to go straight to the Status phase with a CHECK CONDITION status and a
sense key of COMMAND ABORTED. If the unit was not previously in Message In phase then MESSAGE REJECT
will be handled as an illegal message.
If the initiator sends MESSAGE REJECT message in response to the units DISCONNECT message, the unit will
disable disconnects for the rest of the nexus and continue.
5.3.9.
NO OPERATION (08h)
This message is sent by an initiator in response to a target’s request for a message when the initiator does not
currently have any other valid message to send. This message is accepted when the drive is acting as a target, and
may be sent when it is an initiator. When a NO-OP is received during any phase, the unit will continue as though
nothing had happened.
5.3.10.
MESSAGE PARITY ERROR (09h)
This message is sent from the initiator to the target to indicate that one or more bytes in the last message it received
had a parity error.
To indicate its intentions of sending this message, the initiator will send the ATN signal prior to its release of ACK for
the REQ/ACK handshake of the message that has the parity error. This provides an interlock so that the target can
determine which message has the parity error.
This message will not be sent by the drive, when the drive is acting as an initiator. When received as a target, the unit
will enter the Status phase reporting CHECK CONDITION with the sense key set to COMMAND ABORTED.
5-10
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
5.3.11.
BUS DEVICE RESET (0Ch)
This message is sent from an initiator to direct a target to clear all current commands. Upon recognizing this
message, the currently executing command will be aborted and the drive will proceed to the BUS FREE state. The
drive will then execute a hard reset which will leave the drive in a state as if it had been power-cycled. All data in the
buffer will be written to tape before the reset is performed.
A BUS DEVICE RESET message should be used to reset the drive, rather than a hard reset, as this will only reset
the drive rather than all the devices on the bus.
Due to the catastrophic nature of this command, it should be used cautiously in a multiple initiator system.
5.3.12.
IDENTIFY (80h-FFh)
These messages are sent by either the initiator or the target to establish the physical connection path between an
initiator and target for a particular logical unit. This message byte can have the following bits set:
Bit 7
This bit is always set to one to distinguish these messages from other messages.
Bit 6
This bit is only set to one by the initiator. When set to one, it indicates that the initiator has the ability to
disconnect and reconnect.
Bit 5
LUNTAR: This bit is always ZERO to indicate that the LUNTRN field below is valid.
Bits 4-3
Reserved.
Bits 2-0
LUNTRN: These bits specify a logical unit number in a target, and must always be set to ZERO as the
unit is a single target, single logical unit device on the SCSI bus. The Logical Unit Number for the drive is
fixed and is set to ZERO. Any other value will cause the unit to enter the status phase reporting CHECK
CONDITION with the sense key set to COMMAND ABORTED.
Therefore, only the values 80h and C0h are supported.
When sent from a target to an initiator during reconnection, an implied RESTORE POINTERS message will be
performed by the initiator prior to completion of this message, since at no time will a RESTORE POINTERS be sent.
5.3.13.
IGNORE WIDE RESIDUE (23h)
Table 5-5: Ignore Wide Residue Message
Byte
0
1
Value
23
01
Message Code
Ignore
The IGNORE WIDE RESIDUE message (see table 5-5) shall be sent from the SDX-800V to indicate that the number
of valid bytes sent during the last REQ/ACK handshake and REQB/ACKB handshake of a DATA IN phase is less
than the negotiated transfer width. The ignore field indicates the number of invalid data bytes transferred. This
message shall be sent immediately following that DATA IN phase and prior to any other messages. The ignore field
is defined in table 5-6. More than one IGNORE WIDE RESIDUE message may occur during an I/O process.
Table 5-6: Ignore Field
Ignore
00h
01h
02-FFh
Invalid data bits
16-bit transfers
Reserved
DB (15-8)
Reserved
Even though a byte is invalid its corresponding parity bit shall be valid for the value transferred.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-11
5.SCSI Interface
5.4. Status Specification
A Status byte is sent from the drive to the Host during the STATUS phase at the termination of each command as
specified in the SCSI specification, unless the command has been cleared by an ABORT message, by a BUS
DEVICE RESET message, or by a hard RESET.
The Status bytes that will be return are:
00h
GOOD: This status indicates that the drive has successfully completed the command.
02h
CHECK CONDITION: Any error, exception, or abnormal condition that causes sense data to be set returns
CHECK CONDITION. The REQUEST SENSE command should be sent following this status to determine
the nature of the error.
08h
BUSY: The drive is busy. This status is returned whenever the drive is unable to accept a command from
an otherwise acceptable initiator. The BUSY status will be returned by the unit, if, while it is
DISCONNECTED from the SCSI bus, it receives a command from a different initiator. The unit does not
stack commands and therefore will not accept the next command until the current one has completed.
Note that if an initiator sends overlapped commands to the unit (i.e.: it sends a new command while the
previous one is still executing and the unit is disconnected) then the first command will be aborted and a
CHECK CONDITION will be returned to the initiator to indicate that the command was aborted. The
second command will NOT be executed.
The BUSY status returned by the drive must not be confused with DRIVE NOT READY. DRIVE NOT
READY will be returned as part of the Sense data following a REQUEST SENSE command and indicates
that the drive is off-line and no media is loaded in the drive.
The drive is deemed off-line if the tape is currently unloaded and, normally, ejected from the drive.
However, the drive will still be off-line if the tape has been retained within the drive following a Host issued
PREVENT MEDIA REMOVAL command prior to the unload.
In the off-line state, the Host cannot perform any operation which would cause tape motion. These
commands will return a CHECK CONDITION status with a DRIVE NOT READY sense key set. The
command types which are not allowed are write, read, verify or space commands. The Host may load the
tape when the unit is off-line so long as the tape has been prevented from being ejected via the
PREVENT/ALLOW MEDIA REMOVAL command.
While the drive is “Busy” the Host may issue any command, including diagnostic commands, which do not
access the tape and a GOOD status shall be returned.
These commands are:
INQUIRY
LOG SELECT
LOG SENSE
MODE SELECT
MODE SENSE
PREVENT ALLOW MEDIUM REMOVAL
READ BLOCK LIMITS
READ BUFFER
RECEIVE DIAGNOSTIC RESULTS
RELEASE UNIT
REQUEST SENSE
RESERVE UNIT
SEND DIAGNOSTIC
WRITE BUFFER
The TEST UNIT READY command is used to determine the on-line/off-line state of the drive and will,
therefore, return a CHECK CONDITION status with a DRIVE NOT READY sense key set if no media is
currently loaded.
5-12
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5.SCSI Interface
10h
INTERMEDIATE GOOD: This status is returned for every command in a series of linked commands
(except the last command), unless an error, exception or abnormal condition causes a CHECK
CONDITION status or RESERVATION CONFLICT status to be set. If this status is not returned, the chain
of linked commands is broken; no further commands in the series are executed.
18h
RESERVATION CONFLICT: This status is returned by the drive whenever the host or another SCSI
device attempts to access the drive if it has been reserved via the RESERVE UNIT command.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
5-13
5.SCSI Interface
This page intentionally left blank.
5-14
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6.Command Specification
6. Command Specification
This clause includes all supported. Elements of this clause come from clauses 7, 8 and 9 of the T10/1236-D
(SPC-2), T10/1416-D (SPC-3), ANSI NCITS.335:2000 (SSC), SCSI interface specification.
There are different types of SCSI commands, each with a specific, required length (in bytes.) The majority of the
commands are 6 byte Group 0 commands. Group 1 & 2 commands are 10 bytes long. Note that the drive will wait
until the required number of bytes are transferred. At the termination of each command, the target sends a status
byte to the initiator. See the clause on Status for more details. The following is a list of the supported SCSI
Commands and page index:
Table 6-1: SCSI Commands and Page Index
PARA
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.7
6.8
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
6.18
6.18
6.19
6.20
6.21
SCSI COMMAND
OP CODE
PAGE
ERASE
19h
6-2
INQUIRY
12h
6-3
LOAD /UNLOAD
1Bh
6-8
LOCATE
2Bh
6-10
LOG SELECT
4Ch
6-11
LOG SENSE
4Dh
6-13
MODE SELECT (6)
15h
6-38
MODE SELECT (10)
55h
6-38
MODE SENSE (6)
1Ah
6-56
MODE SENSE (10)
5Ah
6-56
PERSISTENT RESERVE IN
5Eh
6-59
PERSISTENT RESERVE OUT
5Fh
6-62
PREVENT ALLOW MEDIUM REMOVAL
1Eh
6-64
READ
08h
6-65
READ ATTRIBUTE
8Ch
6-67
READ BLOCK LIMITS
05h
6-71
READ BUFFER
3Ch
6-72
READ POSITION
34h
6-75
RECEIVE DIAGNOSTIC RESULTS
1Ch
6-77
RELEASE UNIT (6)
17h
6-79
RELEASE UNIT (10)
57h
6-79
REPORT DENSITY SUPPORT
44h
6-81
REPORT DEVICE IDENTIFIER
A3h
6-85
REPORT LUNS
A0h
6-86
REQUEST BLOCK ADDRESS (obsolete)
6.22
REQUEST SENSE
03h
6-87
6.23
RESERVE UNIT (6)
16h
6-95
6.23
RESERVE UNIT (10)
56h
6-95
6.24
REWIND
01h
6-97
SEEK BLOCK (obsolete)
6.25
SEND DIAGNOSTIC
1Dh
6-98
6.26
SET DEVICE IDENTIFIER
A4h
6-100
6.27
SPACE
11h
6-101
6.28
TEST UNIT READY
00h
6-104
VERIFY (obsolete)
6.29
WRITE
0Ah
6-105
6.30
WRITE ATTRIBUTE
8Dh
6-106
6.31
WRITE BUFFER
3Bh
6-108
6.32
WRITE FILEMARKS
10h
6-110
Note: In compliance with the SCSI specification, the unit will terminate the command with a CHECK CONDITION
status and the sense key will be set to ILLEGAL REQUEST when a reserved bit, byte, field or code is not ZERO.
The unit has an embedded SCSI controller interface and therefore is a single target, single logical unit device when
on the SCSI bus. The Obsolete for the drive is fixed and is set to ZERO. In order to be SCSI-2 or SCSI-3 compatible,
the following scheme is used to check the LUN:
SCSI-2 states that the LUN addressed by the host should appear in the IDENTIFY message sent to the target on
selection. LUN field inside of CDB is should be “obsolete”.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-1
6.Command Specification
ERASE
6.1. ERASE 19h
Bit
Byte
0
1
2
3
4
5
7
6
Obsolete
5
4
3
Operation Code (19h)
Reserved
Reserved
Reserved
Reserved
Control
2
1
0
Immed
Long
ERASE causes part or all of the remaining data within a partition to be erased beginning at the current logical
position. Any write data that is currently held in the buffer is written to tape before the ERASE is executed.
Immed: If the Immed bit is set to ZERO, the drive will not return status until the selected operation has completed.
If the bit is set, status will be returned as soon as the operation has been initiated.
Long: If the Long bit is set to ONE, it should be written from the current logical position until EOM/EOP. If the Long
bit is set to ZERO, EOD should be written to the current logical position.
6-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
INQUIRY
6.Command Specification
6.2. INQUIRY 12h
Bit
7
6
5
4
3
2
1
0
CmdDT
EVPD
Byte
0
1
2
3
4
5
Obsolete
Operation Code (12h)
Reserved
Page or Operation Code
Reserved
Allocation Length
Control
INQUIRY tells the drive to send information regarding the drive parameters to the initiator.
CmdDT: The Command support data (CmdDT) bit of one specifies that the drive returns the optional support data
specified by the operation code field.
EVPD: The Enable Vital Product Data (EVPD) bit of one specifies that the drive returns the optional vital product
data specified by the page code field.
If both the CmdDT and EVPD bits are zero, the drive returns the standard INQUIRY data. If the page or operation
code field is not zero when both CmdDT and EVPD are zero, the drive returns a CHECK CONDITION status with an
ILLEGAL REQUEST Sense Key.
If the CmdDT and EVPD bits are one, the drive returns a CHECK CONDITION status with an ILLEGAL REQUEST
Sense Key.
When the EVPD bit is set to one, the drive returns vital product data that is specified in the page or operation code
field. If the page or operation code field is reserved or not implemented by the target, the target shall terminate the
command with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST.
When the CmdDT bit is set to one, the page or operation field specifies the SCSI operation code for which the drive
shall return support data.
Allocation Length: This specifies the maximum number of bytes that the initiator has allocated for returned Inquiry
data. An Allocation Length of ZERO indicates that no Inquiry data is transferred. This condition is not considered an
error. The drive will terminate the DATA IN phase when Allocation Length bytes have been transferred or when all
available Inquiry data have been transferred to the initiator, whichever is less.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-3
6.Command Specification
INQUIRY
Table 6-2: Standard INQUIRY Data
Bit
Byte
0
1
2
3
4
5
6
7
8
15
16
31
32
35
36
42
43
49
50
55
56
7
6
5
4
3
2
1
0
Peripheral Qualifier
RMB(1)
ISO Version (0)
AENC (0) TrmIOP
RelAdr (0)
(MSB)
(MSB)
(MSB)
Peripheral Device Type (01h)
Device-Type Modifier (0)
ECMA Version (0)
ANSI-Approved Version (3)
Reserved(0)
Response Data Format (2)
Additional Length (34h)
Reserved
Reserved
Addr16 (1)
Reserved WB16 (1) Sync (1) Linked (0) Reserved CmdQ (0) SftRe (0)
Vendor Identification
(SONY)
(LSB)
Product Identification
(SDX-800V)
(LSB)
Product Revision Level
(LSB)
Reserved
Reserved
Drive Mode
(DR-10)
Reserved
Reserved
Reserved
CLOCKING (11b)
QAS (0)
IUS (0)
Peripheral Qualifier and Peripheral Device Type: These fields identify the device that is currently connected to the
logical unit. The drive is a single target, single logical unit device. The logical unit number is set to ZERO. Therefore,
the drive normally returns Peripheral Qualifier set to 000b the specified peripheral device type is currently connected
to this logical unit and Peripheral Device Type set to 01h sequential-access device .However, if the initiator requests
a logical unit number greater than ZERO, the drive returns Peripheral Qualifier set to 011b the target is not capable
of supporting a physical device on this logical unit and Peripheral Device Type set to 1Fh unknown device type .
RMB: The Removable Medium bit is one, indicating that the tape can be removed.
Device-Type Modifier: This is a seven-bit user defined code, set to 00h.
ISO Version: This field is ZERO, indicating that the drive does not necessarily comply with the ISO version of SCSI.
ECMA VERSION: This field is ZERO, indicating that the drive does not necessarily comply with the ECMA version of
SCSI.
ANSI Approved Version: This field indicates the implemented version of the ANSI version.
AENC: The drive does not support asynchronous event notification, so this field is ZERO.
TrmIOP: The drive does not support the Terminate I/O Process message, so this field is ZERO.
Response Data Format: This field is 2 indicating that the INQUIRY DATA format complies with the ANSI version of
SCSI-2.
Additional length: The additional length field specifies the length in bytes of the parameters, in this case, 31 bytes.
RelAdr: The drive does not support the Relative Addressing mode, so this bit is never set.
Wbus16: The drive supports 16-bit wide data transfers, so this bit is set.
6-4
SONY AIT-3Ex drive SDX-800V series Ver.1.1
INQUIRY
6.Command Specification
Sync: The drive supports synchronous data transfers, so this bit is set.
Linked: The drive does not support linked command.
CmdQue: The drive does not support tagged command queuing , so this bit is never set.
SftRe: The drive responds to the RESET condition with a HARD reset , so this bit is never set.
Vendor Identification: This field contains eight bytes of ASCII data identifying the vendor of the product as "
SONY".
This and the next two fields are left-aligned with the unused bytes at the end of the fields and filled with space
characters (20h).
Product Identification: This field contains sixteen bytes of ASCII data identifying the product as "SDX-800V" for the
data compression model.
Product Revision Level: This field contains four bytes of ASCII data, which define the SCSI Interface Revision
Level.
Addr16: This bit set to 1 indicates the drive supports 16-bit wide SCSI addresses.
Clocking: This field set to 3 indicates the drive supports both ST (single transition) and DT (double transition).
QAS: The drive does not support quick arbitration.
IUS: The drive does not support information units.
Vital Product Data
This contains a list of the vital product data codes supported by the drive.
- Supported Vital Product Data pages
Bit
Byte
7
0
6
5
4
Peripheral Qualifier
1
3
2
1
0
Peripheral Device Type (01h)
Page Code (00h)
2
Reserved (00h)
3
Page Length (04h)
4
Supported Page List (00h)
5
Supported Page List (80h)
6
Supported Page List (83h)
7
Supported Page List (C0H)
- Unit Serial Number page
Bit
Byte
0
7
6
5
4
Peripheral Qualifier
3
2
1
0
Peripheral Device Type (01h)
1
Page Code (80h)
2
Reserved (00h)
3
Page Length (0Ah)
4
13
Product Serial number (in ASCII)
The page length field specifies the length of the product serial number. If the allocation length is too small to transfer
all of the page, the page length shall not be adjusted to reflect the truncation.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-5
6.Command Specification
INQUIRY
The product serial number field contains ASCII data that is vendor-specific. The least significant ASCII character of
the number shall appear as the last byte of a successful data transfer.
- Device Identification page
Bit
Byte
0
7
6
5
4
Peripheral Qualifier
1
3
2
1
0
Peripheral Device Type (01h)
Page Code (83h)
2
Reserved (00h)
3
Page Length (32h)
4
Reserved (00h)
Code set (02h)
5
Reserved (00h)
Identifier type (01h)
6
Reserved (00h)
7
Identifier length (22h)
8
Vendor ID (SONY)
15
16
Product ID (SDX-800V)
31
32
Serial Number of the drive
41
42
Reserved (00h)
Code set (01h)
43
Reserved (00h)
Identifier type (02h)
44
Reserved (00h)
45
Identifier length (08h)
46
IEEE EUI-64 Code
53
IEEE EUI-64: The identifier field a Canonical form IEEE Extended Unique Identifier, 64-bit (EUI-64). (ANSI/IEEE
394:1995)
- Product Revision page
Bit
Byte
0
1
7
6
Peripheral Qualifier
5
4
3
2
1
0
Peripheral Device Type (01h)
Page Code (C0h)
2
Reserved (00h)
3
Page Length (08h)
4
Product Revision Level
7
8
Reserved
11
Command support data
6-6
SONY AIT-3Ex drive SDX-800V series Ver.1.1
INQUIRY
6.Command Specification
If the drive implements the requested SCSI operation code, it shall return the data defined in table 6-3. If the device
does not implement the requested SCSI operation code it shall return the peripheral qualifier and type and 001b in
the Support field.
Table 6-3: Command support Data
Bit
Byte
0
1
2
7
6
5
4
Peripheral Quaifier
3
1
0
Peripheral Device Type (01h)
Reserved (00h)
ISO version (0)
2
Support
ECMA version (0)
3
Reserved (00h)
4
Reserved (00h)
5
CDB size (m-5)
6
CDB usage data
ANSI – Approved version (03h)
m
Support: The drive supports the tested SCSI operation code in conformance with a SCSI standard. The data format
conforms to the definition in table 6-3 .
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-7
6.Command Specification
LOAD/UNLOAD
6.3. LOAD/UNLOAD 1Bh
Bit
Byte
0
1
2
3
4
5
7
6
5
Reserved
4
3
Operation Code (1Bh)
Reserved
Reserved
Reserved
HOLD
Control
2
1
0
IMMED
EOT (0)
RETEN
LOAD
The LOAD UNLOAD command requests that the drive enable or disable the media for further operations. This
command may also be used to request a retention function.
IMMED: If this bit is set, status is returned as soon as the load or unload operation is initiated. Otherwise, the status
is returned after the operation has completed.
LOAD: A LOAD bit of one and a HOLD bit of zero indicates the medium in the drive shall be loaded and positioned
to the beginning-of-partition zero. A LOAD bit of zero and a HOLD bit of zero indicates the medium in the drive shall
be positioned for removal at the extreme position along the medium specified by the EOT bit.
A LOAD bit of one and a HOLD bit of one indicates if the medium has not been moved into the logical unit, the
medium shall be moved in but not positioned for access. The EOT and RETEN bits shall be set to zero. Following
successful completion, the drive shall return GOOD STATUS. If both the medium and drive support MAM, the drive
shall generate a unit attention condition for all initiators with the additional sense code and additional sense code
qualifier set to MEDIUM AUXILIARY MEMORY ACCESSIBLE.
A LOAD bit of zero and a HOLD bit of one indicates if the medium is in the drive, the medium shall be unthreaded but
shall not be ejected. Following successful completion, the drive shall return GOOD STATUS. If both the medium and
drive support MAM, the drive shall generate a unit attention condition for all initiators with the additional sense code
and additional sense code qualifier set to MEDIUM AUXILIARY MEMORY ACCESSIBLE.
RETEN: A RETEN bit of one indicates that the drive unit shall perform a retention function on the current medium. A
RETEN bit of zero indicates that the drive shall not perform a retention function on the current medium.
EOT: An end-of-tape (EOT) bit of one and a Load bit of ZERO indicates that the medium shall be positioned at
end-of-medium for removal from the peripheral device. Prior to performing the unload operation, any buffered data
that is to be written shall be transferred to the medium. An EOT bit of ZERO and Load bit of ZERO indicates that the
medium shall positioned at beginning-of-medium for removal etc. This drive does not support this bit. EOT bit of one
shall cause the target to return CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and
the additional sense code shall be set to ILLEGAL FIELD IN CDB. This field is not supported. This field should be
set to 0.
HOLD: A HOLD bit of one indicates MAM shall be accessible upon completion of the command but the medium shall
not be positioned for access. A HOLD bit of zero and a LOAD bit of one indicates the medium shall be positioned for
access. A HOLD bit of zero and a LOAD bit of zero indicates MAM shall not be accessible upon completion of the
command.
If the drive has received an UNLOAD command with the Immediate bit set and then receives either another
command which would involve tape motion or TEST UNIT READY, the drive will return a CHECK CONDITION
status with a NOT READY sense key set.
6-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOAD/UNLOAD
6.Command Specification
When the drive receives the UNLOAD, the tape is rewound to BOM and ejected. The operator must reload the drive
manually. If, however, the drive has previously received a PREVENT MEDIA REMOVAL (with prevent bit set)
command, the tape is retained in the drive. A subsequent LOAD command will load and position the tape at BOP
ZERO. If an UNLOAD was sent instead, the drive would return NOT READY and the tape would remain within the
drive. In this case, the drive requires a PREVENT ALLOW MEDIA REMOVAL (with prevent bit clear) command
before an UNLOAD will eject the tape.
Note: While the PREVENT MEDIA REMOVAL is in effect, the Front Panel EJECT button is completely disabled.
If the cassette is unloaded but has not been ejected from the drive because of moisture detection, then a subsequent
UNLOAD will cause the tape to eject from the drive. All commands except INQUIRY, REQUEST SENSE and READ
BLOCK LIMITS will return a CHECK CONDITION status with a HARDWARE ERROR sense key set. The tape may
also be ejected via the Front Panel EJECT button.
If no cassette is in drive, both LOAD and UNLOAD will return a CHECK CONDITION status with NOT READY sense
key set
The valid combinations of the last four fields are given in Table 6-4 below.
Table 6-4: LOAD UNLOAD Command Parameter Combinations
HOLD
RETEN
LOAD
ACTION
0
0
1 (Load)
Normal load to access the medium without a retention operation, positioned at BOP0. Logical
Unit in READY state. Immed may be ZERO or 1b.
1
0
1 (Load)
Load to access MAM only. Logical Unit in NOT READY state. Immed may be ZERO or 1b. MAM
Load Count is not incremented. Unit Attention Condition set for MEDIUM AUXILIARY MEMORY
ACCESSIBLE.
0
1
1 (Load)
Normal load to access the medium after a retention operation, positioned at BOP0. Logical Unit
in READY state. Immed may be ZERO or 1b.
1
1
1 (Load)
Invalid Combination. Command terminates with CHECK CONDITION Status.
The sense key is set to ILLEGAL REQUEST and the additional sense code is set to
INVALID FIELD IN CDB.
0
0
0
(Unload)
Normal Unload/Eject of cartridge. Logical Unit enter NOT READY state. Immed may be ZERO or
1b.
1
0
0
(Unload)
Unload of cartridge, but MAM still accessible but cartridge is not ejected. Logical Unit enters
NOT READY state. Immed may be ZERO or 1b. Unit Attention Condition set for MEDIUM
AUXILIARY MEMORY ACCESSIBLE.
0
1
0
(Unload)
Normal Unload/Eject of cartridge after a retention operation. Logical Unit enters NOT READY
state. Immed may be ZERO or 1b.
1
1
0
(Unload)
Unload of cartridge after retention operation, but MAM still accessible. Logical Unit enter NOT
READY state. Immed may be ZERO or 1b.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-9
6.Command Specification
LOCATE
6.4. LOCATE 2Bh
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
Obsolete
5
4
3
Operation Code (2Bh)
Reserved
Reserved
2
1
0
BT (0)
CP
Immed
(MSB)
Block Address
(LSB)
Reserved
Partition
Control
LOCATE command causes the drive to position the logical unit to the specified block address in a specified partition.
Upon completion, the logical position shall be after the specified location. Prior to performing the locate operation,
the drive shall ensure that all buffered data, File-marks, and Set-marks have been transferred to tape.
BT: A block address type (BT) bit=1 is not supported and shall be set to ZERO otherwise a CHECK CONDITION
with an ILLEGAL REQUEST sense key will be returned.
CP: A change partition (CP) bit of one indicates that a change to the partition specified in the partition field is to occur
prior to positioning to the block specified in the block address field. A CP bit of ZERO indicates no partition change is
to be made and the partition field is to be ignored.
Immed: An immediate (Immed) bit of ZERO indicates that the drive shall not return status until the locate operation
has completed. An Immed bit of one indicates that the drive shall return status as soon as all buffered commands
have completed execution and the command descriptor block of the LOCATE command has been validated. If
CHECK CONDITION status is returned for a LOCATE command with an Immed bit of one, the locate operation shall
not be performed.
Block Address: The Block Address field specifies the block address to which the drive shall be positioned on the
tape.
Partition: The Partition field specifies which partition to select if the CP bit is one. Refer to the Mode Select
command, Medium Partition page for additional information about partitioning. The partition is not support by the
drive. If set to 1, a check condition status is returned with a ILLEGAL REQUEST sense key.
6-10
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SELECT
6.Command Specification
6.5. LOG SELECT 4Ch
Bit
7
6
5
Byte
0
1
2
3
4
5
6
7
8
9
4
3
2
1
0
PCR
SP (0)
Operation Code (4Ch)
Obsolete
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Parameter List Length
PC
(MSB)
(LSB)
Control
The LOG SELECT command provides a means for the Host to manage statistical information maintained by the
device about its own hardware or the installed media. This description should be read in conjunction with the
description of the LOG SENSE command which follows it, to provide the reader with information about log page
format, parameters and supported pages.
PCR: A Parameter Code Reset bit of one and a Parameter List Length of ZERO will cause ALL log pages which can
be cleared, to be cleared. If this field is set and the Parameter List Length field is non-ZERO then the command will
be terminated with a CHECK CONDITION status with the sense key set to ILLEGAL REQUEST, and an additional
sense code of INVALID FIELD IN CDB.
SP: The device does not have non-volatile RAM into which it may save parameters. Therefore, the Save Page bit is
not supported by this device and shall always be set to ZERO. If the SP bit is set, the command will be terminated
with CHECK CONDITION status with the sense key set to ILLEGAL REQUEST, and an additional sense code of
INVALID FIELD IN CDB.
PC: The Page Control field defines the type of parameter values to be selected:
Table 6-5: Page Control field values
Value
00b
01b
10b
11b
Description
Current Threshold Values
Current Cumulative Values
Default Threshold Values
Default Cumulative Values
If this field is set to 00b, 10b or 11b and the Parameter List Length field is non-0 then the command will be terminated
with a CHECK CONDITION status with the sense key set to ILLEGAL REQUEST, and an additional sense code of
INVALID FIELD IN CDB. This is because no modification of these log pages is permitted. For a description of
command behavior if this field is set to 01b then see the description of the Parameter List Length field below.
If this field is set to 10b and the Parameter List length field is 0 then all Current Threshold Values will be reset to the
Default Threshold Values. This is equivalent to no change as Threshold Values cannot be modified.
If this field is set to 11b and the Parameter List Length field is 0 then all Current Cumulative Values will be reset to the
Default Cumulative Values. This is equivalent to all log pages which can be cleared.
Parameter List Length: This field specifies the length in bytes of the LOG SELECT parameter list that shall be
transferred from the initiator to the target during the DATA OUT phase. A parameter list length of ZERO indicates
that no data shall be transferred. This condition shall not be considered as an error (see description of Parameter
Code Reset and Page Control fields above). If this field is non-0 the Page Control field must be 01b.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-11
6.Command Specification
LOG SELECT
The purpose of the Log Select command is to allow the initiator to modify and initialize parameters within the logs
supported by the device. However in this case, access to individual parameters within log pages is not supported
and so initiator is restricted to resetting complete log pages only.
To achieve this, during the DATA OUT phase the initiator must send the log page header of the page to be cleared,
with the Page Length field set to ZERO. The following pages can be cleared in this manner.
Table 6-6: Page Codes
Page Code
02h
03h
07h
2Eh
34h
35h
39h
3Eh
Description
Write Error Counter Page
Read Error Counter Page
Last n Error Events Page
Tape Alert Log Page
Write Frame Error Counter Page
Read Frame Error Counter Page
Data Compression Transfer Log Page
MIC Variable Length Information Parameter Code
Note: Due to the way in which logs are stored and updated, clearing log page 2 will result in log page 3 also being
cleared and vice versa.
Because of this method of clearing the log pages, the Parameter List Length field must be an integer multiple of the
Log Page Header length (i.e. 4). Otherwise the command will be terminated with a CHECK CONDITION status with
the sense key set to ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN CDB.
If multiple pages are sent during the DATA OUT phase then they must be sent in ascending order according to page
code. Otherwise the command will terminate with a CHECK CONDITION status with the sense key set to ILLEGAL
REQUEST and an additional sense code of ILLEGAL FIELD IN PARAMETER LIST. The same status will be
returned if an unsupported Page Code appears in any header or if the specified page cannot cleared.
Other Log Select Page Codes have been defined for MIC support. MIC Variable Length Information Page is
assigned as 3Eh. Please refer the description for “Log Sense Page 3Eh” and Appendix (MIC) on this Product
Specification Manual. User Volume Note and User Partition Note are automatically created with indicated size, if it is
not exist. User Volume Note size and User Partition Note size must be the same size with current one, if it is already
exist. Just only supersede operation is allowed.
Table 6-7: MIC Variable Length Information Parameter Codes
Parameter Code
0001h
0002h
Description
User Volume Note
User Partition Note for Partition 0
Length
n-3
n-3
1.
See Important Note for Log Sense Page 3Eh.
2.
If there is no User Volume Note and there is no User Partition Note, User Volume Note will be created for the
specific Length if it does not exceed the Available Free Byte Count returned in Log Sense Page 3Dh
Parameter Code 0003h. If there is existing User Volume Note and User Partition Note data the new User
Volume Note data must be exactly the same size as the existing User Volume Note data, otherwise a Check
Condition status will be returned and no new data will be written to MIC. If there is existing User Volume Note
data but no User Partition Note data then User Volume Note length may be equal to the Available Free Byte
Count.
3.
There is no format to writing user data to MIC. The application is free to define MIC data for its use.
6-12
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
6.6. LOG SENSE 4Dh
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
4
3
Operation Code (4Dh)
Reserved
Page Code
Obsolete
PC
(MSB)
2
1
0
PPC (0)
SP (0)
Reserved
Parameter Pointer
(MSB)
Allocation Length
(LSB)
(LSB)
Control
LOG SENSE provides a means for the Host to retrieve statistical information maintained by the device about its own
hardware or the installed media. It is a complementary command to the LOG SELECT command.
SP: The device does not have non-volatile RAM into which it may save parameters. Therefore, the Save Page bit is
not supported by this device and shall always be set to ZERO. If the SP bit is set, the command will be terminated
with CHECK CONDITION status with the sense key set to ILLEGAL REQUEST, and an additional sense code of
INVALID FIELD IN CDB.
PPC: The Parameter Pointer Control bit shall always be set to ZERO. This indicates that the parameter data
requested from the device will start with the parameter code specified in the Parameter Pointer field and return the
number of bytes specified in the Allocation Length field in ascending order of parameter codes from the specified log
page. A PPC bit of ZERO and a Parameter Pointer field of ZERO cause all available parameter data for that page
code to be returned to the initiator. If the PPC bit is set or the Parameter Pointer is larger than the highest numbered
parameter on the page, then the target shall terminate the command with CHECK CONDITION status. The sense
key shall be set to ILLEGAL REQUEST and the additional sense code shall be set to INVALID FIELD IN CDB. If the
drive does not support a parameter code within this page then it shall not return any data associated with this
parameter.
PC: The Page Control field defines the type of parameter values to be selected. The page control field is defined
below:
Table 6-8: Page Control field values
Value
00b
01b
10b
11b
Type of Parameter Values
Current Threshold Values
Current Cumulative Values
Default Threshold Values
Default Cumulative Values
The Current Threshold Values and the Default Threshold Values are non-changeable and will both return the same
values-i.e. the maximum values that each parameter can attain. Note that for some parameters the term threshold
value has no meaning. See the description of individual pages/ parameters below for more details.
The Current Cumulative Values are the values computed since the last reset of the device (either by power-cycling,
BUS DEVICE RESET or SCSI RESET). Note that for some parameters these values cannot be reset by any
method. See description of individual pages/parameters below for more details.
The Default Cumulative Values are the values to which each parameter gets initialized on a reset condition as
described above. See description of individual pages/parameters below for more details.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-13
6.Command Specification
LOG SENSE
Page Code: The Page Code field identifies which log page is being requested by the initiator. If the page is not
supported then the command will terminate with a CHECK CONDITION status with the sense key set to ILLEGAL
REQUEST and an additional sense code of INVALID FIELD IN CDB.
Supported pages are:
Table 6-9: Supported Log Pages
Page Code
00h
02h
03h
07h
2Eh
30h
31h
33h
34h
35h
39h
3Ch
3Dh
3Eh
Description
Supported Log Pages
Write Error Counter Page
Read Error Counter Page
Last n Error Events Page
Tape Alert Log Page
Tape Log Page (Sony Unique)
Tape Capacity Log Page
Drive Usage Page (Sony Unique)
Write Frame Error Counter Page
Read Frame Error Counter Page
Data Compression Transfer Log Page
AIT Log Page
AIT Fixed Length Information Page for MIC
AIT Variable Length Information Page for MIC
Parameter Pointer: The Parameter Pointer field allows the host to specify at which parameter within a log page the
requested data should begin.
For example if a page supported parameters 0 through 5, and the Parameter Pointer field contained 3 then only
parameters 3, 4 and 5 would be returned to the initiator. Similarly, if a page supported parameters 1, 3 and 6, and the
Parameter Pointer field contained 2, then only parameters 3 and 6 would be returned to the initiator.
Note that parameters within a page are always returned in ascending order according to parameter code. If an
invalid parameter pointer is sent the drive will return CHECK CONDITION with the sense key set to ILLEGAL
REQUEST and an additional sense code of INVALID FIELD IN CDB.
Allocation Length: The Allocation Length field is used to inform the target how much space the initiator has
allocated for data. Note however that if this field is 0 then this is not considered an error and the device will just return
a GOOD STATUS.
6.6.1. The Log Page Descriptor
The format of the log pages consists of ZERO or more variable-length parameter structures. Each page begins with
a 4-byte page header followed by ZERO or more variable-length parameter structures defined for that page. The Log
Select command supports the ability to send ZERO or more log pages. The LOG SENSE command returns a single
log page as specified in the Page Code field of the CDB.
6-14
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
Table 6-10: Log Page Format
Bit
Byte
0
1
2
3
7
6
5
4
3
Reserved
2
1
0
Page Code
Reserve
(MSB)
Page Length (n-3)
4
x+3
Log Parameters (s)
The First Log Parameter
(Length x)
n-y
n
The Last Log Parameter
(Length y)
(LSB)
.
.
.
Page code: Identifies which page of data is being transferred. If the Page Code field value is reserved or not
implemented by the target, the target shall terminate the command with a CHECK CONDITION status. The sense
key shall be set to ILLEGAL REQUEST, and the additional sense code shall be set to INVALID FIELD IN
PARAMETER LIST.
Page Length: The Page Length field indicates the total number of bytes that follow this byte. The value returned for
this field depends on the value you specified for the Page Code and the Parameter Pointer in the CDB. This value is
independent of what you specified for the Allocation Length. A Page Length value that results in the truncation of any
parameter shall cause the target to terminate the command with CHECK CONDITION status. The sense key shall
be set to ILLEGAL REQUEST and the additional sense code shall be set to INVALID FIELD IN PARAMETER LIST.
6.6.2. The Log Parameter Descriptor
Most log pages contain one or more special data structures called log parameters. These may be data counters
which record the occurrence of certain events, or they may be more complex structures which describe activities or
other events which occur within the device. Each parameter structure begins with a 4-byte parameter header
followed by one or more bytes of parameter structure data. The 4-byte header is shown below:
Table 6-11: Log Parameter
Bit
Byte
0
1
2
3
4
n
7
6
5
(MSB)
DU
4
3
2
1
0
LBIN
(LSB)
LP
Parameter Code
DS (1)
TSD
ETC (0)
TMC (00)
Parameter Length (n-3)
Parameter Value
Parameter Code: Identifies which parameter of data is being transferred. If the parameter code value is reserved or
not implemented by the target, then the target shall terminate the command with CHECK CONDITION status. The
sense key shall be set to ILLEGAL REQUEST and the additional sense code shall be set to INVALID FIELD IN
PARAMETER LIST.
The DU, DS, TSD, ET, TMC, and LP fields are collectively referred to as the control byte.
DU: The DU bit (Disable Update) is not defined for threshold values (indicated by the PC field of the LOG SENSE
command descriptor block). The target shall ignore the value of any DU bits in a LOG SELECT command.
DS: The DS (Disable Save) bit informs the initiator that savable parameters are disabled (i.e. not supported), and
should always be 1. If it is 0 the command will terminate with CHECK CONDITION status with sense key set to
ILLEGAL REQUEST and additional sense code of ILLEGAL FIELD IN PARAMETER LIST.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-15
6.Command Specification
LOG SENSE
TSD: A target save disable (TSD) bit of ZERO indicates a target-defined method for saving log parameters. This
implicit saving operation shall be done frequently enough to insure that the cumulative parameter values retain
statistical significance (i.e. across power cycles). A TSD bit of one indicates that either the target does not provide a
target-defined method for saving log parameters or the target-defined method has been disabled by the initiator. If
the initiator sets both the DS and the TSD bits set to one, the target shall terminate the command with CHECK
CONDITION status. The sense key shall be set to ILLEGAL REQUEST with the additional sense code set to
INVALID FIELD IN PARAMETER LIST.
ETC: An enable threshold comparison (ETC) bit of one indicates that when the cumulative parameter value is
updated, it shall be compared to the threshold parameter value and the action specified by the TMC field shall be
taken. An (ET) bit of ZERO disables this comparison. The ET bit is the same for both the cumulative and threshold
log parameter. Thus when the ET bit is set to a value by the initiator, this value is returned for both the cumulative
and threshold values of the log parameter.
TMC: The threshold met criteria (TMC) field defines the binary relationship between the cumulative and threshold
log parameter values under which the threshold is met. If the ET bit is one and the threshold condition is met, a Unit
Attention condition shall be posted to all initiators. When reporting the unit attention condition, the target shall set the
sense key to UNIT ATTENTION, the additional sense code to LOG EXCEPTION, and the additional sense code
qualifier to THRESHOLD CONDITION MET.
The TMC field is the same for both the cumulative and threshold parameter. Thus when the TMC field is set to a
value by the initiator, this value is returned for both cumulative and threshold values of the log parameter.
Table 6-12: Threshold Met criteria
TMC
00b
01b
10b
11b
Threshold Met Criteria
Any update of the parameter
Cumulative = Threshold
Cumulative < > Threshold
Cumulative > Threshold
LP: The LP bit field defines whether the parameter is a data counter or a list parameter. See the description of each
supported page below for information on the setting of this field.
Note: If any of the other bit-fields in the control byte are set then the command will terminate with a CHECK
CONDITION status with a sense key of ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN
PARAMETER LIST
6.6.3. Supported Log Pages
The following log pages are supported:
Table 6-13: Supported Log pages
Page Code
00h
02h
03h
07h
2Eh
30h
31h
33h
34h
35h
39h
3Ch
3Dh
3Eh
Description
Supported Log Pages
Write Error Counter Page
Read Error Counter Page
Last n Error Events Page
Tape Alert Log Page
Tape Log Page (Sony Unique)
Tape Capacity Log Page
Drive Usage Log Page (Sony Unique)
Write Frame Error Counter Page
Read Frame Error Counter Page
Transfer Log Page
AIT Log Page
AIT Fixed Length Information Page for MIC
AIT Variable Length Information Page for MIC
A description of each supported log page is given below.
6-16
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.6.3.1.
6.Command Specification
Summary List of Supported Pages
The summary list of supported log pages returns the list of page codes supported by the target. This page is only
valid for the Log Sense command and if sent to the host during a Log Select command will cause termination with
CHECK CONDITION status with sense key set to ILLEGAL REQUEST and additional sense code of INVALID
FIELD IN PARAMETER LIST.
Table 6-14: Supported Log Pages
Bit
Byte
0
1
2
3
4
17
7
6
5
Reserved
4
3
2
1
0
Page Code (00h)
Reserved (00h)
Page Length (00 0Eh)
(MSB)
(LSB)
Supported Page List
(00 02 03 07 2E 30 31 33 34 35 39 3C 3D 3Eh)
This page returns the summary list of supported log pages for the specified logical unit to the requesting initiator.
IMPLEMENTORS NOTE: Typically, an initiator should first request page ZERO to determine the list of pages
supported by the device. The page code parameters are a list containing the page codes of the supported pages for
the logical unit in ascending order. Note that neither Threshold nor Cumulative values have any meaning for this
page.
6.6.4. Write and Read Error Counters Pages
The Error Counters Pages (Write and Read) are used to report statistical information about Write and Read soft and
hard errors and retries. Each parameter is a counter which is updated by the target every time the corresponding
event occurs. The format of the Error Counters Pages is given below:
Table 6-15: Write/Read Error counters page
Bit
Byte
0
1
2
3
4
5
6
7
8
N
7
6
5
Reserved
4
3
(MSB)
Page Code (02h or 03h)
Reserved
Page Length (n)
(MSB)
Parameter Code
2
1
0
(LSB)
DU (0)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (n-3)
Parameter Value
LBIN (0)
(LSB)
LP (0)
(LSB)
The Page Code is one of the following:
Table 6-16: Page Code
Page Code
02h
03h
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Description
Write error Counter Page
Read error Counter Page
6-17
6.Command Specification
LOG SENSE
The following parameter codes are supported for each Error Counters Page:
Table 6-17: Error Counter parameter codes
Parameter
Code
0003h
0004h
0005h
0006h
Description
Total Errors Corrected (Soft Errors)
Total Times Correction
Total Groups Processed (Algorithm
Processed)
Total Errors Uncorrected (Hard Errors)
Parameter
Length (Bytes)
4
4
4
Default
Cumulative
0
0
0
Default
Threshold
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
4
0
FFFFFFFFh
6.6.5. Last N Error Events List
This page is used to report information on soft and hard errors encountered by the device during normal operation.
Each parameter corresponds to an encountered error and is a report of what type of error occurred and when it
occurred. The format of the page is given below:
Table 6-18: Last N Error Events Page
Bit
Byte
0
1
2
3
4
5
6
7
8
17
7
6
5
Reserved
4
3
2
1
0
Page Code (07h)
Reserved
Page Length (n*14)
(MSB)
(LSB)
(MSB)
DU (0)
Parameter Code
DS (1)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (0Ah)
Parameter Value
LBIN (0)
(LSB)
LP (0)
The Parameter Codes supported are 1 through 30 where 30 is the maximum number of entries in the log page.
If there are no entries, the command will return the Page Header with the Page Length field set to ZERO.
Each error event record contains diagnostic information for a single error encountered by the device. The parameter
codes associated with the error-event records indicate the order in which the errors occurred. A higher parameter
code indicates that the error event occurred later in time.
Each parameter entry is 10 bytes long and has the following format:
Table 6-19: Error Event format
Byte Offset
0–4
5
6–9
Meaning
Result Message (see Diagnostic Clause)
Unused
Time-stamp (number of 1 minute increments since power-on)
When the log page becomes full, no more entries will be added until the log is cleared (using one of the methods
described previously) or a reset occurs. The current cumulative values will be returned regardless of the page
control field in the LOG SENSE CDB.
6-18
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
6.6.6. Tape Alert Log Page
Bit
Byte
0
1
2
3
5n-1
5n
5n+1
5n+2
5n+3
7
6
5
Reserved
4
3
2
(MSB)
Page Code (2Eh)
Reserved
Page Length (140h)
(MSB)
Parameter Code (n)
1
0
(LSB)
DU (0)
DS (1)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (1)
Value of Flag
LBIN (0)
LP (0)
The value of n in the Parameter Code field shall be in the range of 1 to 64.
A value of one in the Value of Flag field indicates the flag is set.
Each flag will be cleared to zero in the following conditions:
• At power on cycle
• When Tape Alert Log page is read
• When specified corrective action has been performed
• SCSI bus reset or Bus Device Reset message
• Log Select reset
There are three types of flags, listed below in order of increasing severity:
Table 6-20: Tape Alert flag types
Severity
C (Critical)
W (Warning)
I (Information)
Urgent User
Intervention
X
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Risk of Data Loss
X
X
Explanations
X
X
6-19
6.Command Specification
LOG SENSE
Tape Alert Log Page Parameter Codes
Code
01h
Flag
Read
Warning
Type
O
Flag Type
W
02h
Write
Warning
O
W
03h
Hard Error
M
W
04h
Media
M
C
05h
Read Failure
M
C
06h
Write Failure
M
C
07h
Media Life
M
W
08h
Not Data
Grade
O
W
09h
Write Protect
O
C
0Ah
No Removal
O
I
0Bh
Cleaning
Media
Unsupported
Format
O
I
O
I
You have tried to load a cartridge of a type that is
not supported by this drive.
The operation has failed because the tape in the
drive has snapped:
1. Discard the old tape.
2. Restart the operation with a different tape.
The operation has failed because the tape in the
drive has snapped:
1. Do not attempt to extract the tape cartridge.
2. Call the tape drive supplier helpline.
The memory in the tape cartridge has failed,
which reduces performance.
Do not use the cartridge for further backup
operations.
The operation has failed because the tape
cartridge was manually ejected while the tape
drive was actively writing or reading.
You have loaded a cartridge of a type that is
read-only in this drive.
The cartridge will appear as write-protected
0Ch
0Dh
Recoverable
Snapped
Tape
O
C
0Eh
Unrecoverabl
e Snapped
Tape
M
C
0Fh
Memory Chip
in Cartridge
Failure
O
W
10h
Forced Eject
M
C
11h
Read Only
Format
O
W
6-20
Recommended application client message
The tape drive is having problems reading data.
No data has been lost, but there has been a
reduction in the performance of the tape.
The tape drive is having problems writing data.
No data has been lost, but there has been a
reduction in the capacity of the tape.
The operation has stopped because an error has
occurred while reading or writing data, which the
drive cannot correct.
Your data is at risk:
1. Copy any data you require from this tape.
2. Do not use this tape again.
3. Restart the operation with a different tape.
The tape is damaged or the drive is faulty. Call the
tape drive supplier helpline.
The tape is from a faulty batch or the tape drive is
faulty:
1. Use a good tape to test the drive.
2. If the problem persists, call the tape drive
supplier helpline.
The tape cartridge has reached the end of its
calculated useful life:
1. Copy any data you need to another tape
2. Discard the old tape.
The tape cartridge is not data-grade. Any data
you back up to the tape is at risk.
Replace the cartridge with a data-grade tape.
You are trying to write to a write-protected
cartridge.
Remove the write-protection or use another tape.
You cannot eject the cartridge because the tape
drive is in use.
Wait until the operation is complete before
ejecting the cartridge.
The tape in the drive is a cleaning cartridge.
Probable cause
The drive is having
severe trouble reading
The drive is having
severe trouble writing
The drive had a hard
read or write error
Media can no longer be
written/read, or
performance is severely
degraded
The drive can no longer
read data from the tape
The drive can no longer
write data to the tape
The media has
exceeded its specified
life
The drive has not been
able to read the MRS
stripes
Write command is
attempted to a write
protected tape
Manual or s/w unload
attempted when prevent
media removal on
Cleaning tape loaded
into drive
Attempted loaded of
unsupported tape
format, e.g. DDS2 in
DDS1 drive
Tape snapped/cut in the
drive where media can
be ejected
Tape snapped/cut in the
drive where media
cannot be ejected
Memory chip failed in
cartridge
Manual or forced eject
while drive actively
writing or reading
Media loaded that is
read-only format
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
Code
12h
Flag
Tape
Directory
Corrupted on
Load
6.Command Specification
Type
O
Flag Type
W
Recommended application client message
The directory on the tape cartridge has been
corrupted.
File search performance will be degraded. The
tape directory can be rebuilt by reading all the
data on the cartridge
The tape cartridge is nearing the end of its
calculated life. It is recommended that you:
1. Use another tape cartridge for your next
backup.
2. Store this tape cartridge in a safe place in case
you need to restore data from it.
The tape drive needs cleaning:
1. If the operation has stopped, eject the tape and
clean the drive
2. If the operation has not stopped, wait for it to
finish and then clean the drive.
Check the tape drive user’s manual for device
specific cleaning instructions.
The tape drive is due for routine cleaning:
1. Wait for the current operation to finish.
2. Then use a cleaning cartridge.
Check the tape drive user’s manual for device
specific cleaning instructions.
The last cleaning cartridge used in the tape drive
has worn out:
1. Discard the worn out cleaning cartridge.
2. Wait for the current operation to finish.
3. Then use a new cleaning cartridge.
The last cleaning cartridge used in the tape drive
was an invalid type:
1. Do not use this cleaning cartridge in this drive.
2. Wait for the current operation to finish.
3. Then use a valid cleaning cartridge.
The tape drive has requested a retention
operation
13h
Nearing
Media Life
O
I
14h
Clean Now
M
C
15h
Clean
Periodic
O
W
16h
Expired
Cleaning
Media
M
C
17h
Invalid
Cleaning
Tape
O
C
18h
Retention
Requested
O
W
19h
Dual-Port
Interface
Error
O
W
A redundant interface port on the tape drive has
failed
1Ah
Cooling Fan
Failure
O
W
A tape drive cooling fan has failed.
1Bh
Power
Supply
O
W
1Ch
Power
Consumption
O
W
A redundant power supply has failed inside the
tape drive enclosure. Check the enclosure user’s
manual for instructions on replacing the failed
power supply.
The tape drive power consumption is outside the
specified range
1Dh
Drive
Maintenance
O
W
Preventive maintenance of the tape drive is
required.
Check the tape drive user’s manual for device
specific preventive maintenance tasks or call the
tape drive supplier helpline.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Probably cause
Tape drive powered
down with tape loaded,
or permanent error
prevented the tape
directory being updated
Media may have
exceeded its specified
number of passes
The drive thinks it has a
head clog, or needs
cleaning
The drive is ready for a
periodic clean
The cleaning tape has
expired
Invalid cleaning tape
type used
The drive is having
severe trouble reading
or writing, which will be
resolved by a retention
cycle
Failure of one interface
port in a dual-port
configuration, e.g. Fibre
channel
Fan failure inside tape
drive mechanism or
tape drive enclosure
Redundant PSU failure
inside the tape drive
enclosure or rack
subsystem
Power consumption of
the tape drive is outside
specified range
The drive requires
preventative
maintenance (not
cleaning).
6-21
6.Command Specification
LOG SENSE
Code
1Eh
Flag
Hardware A
Type
O
Flag Type
C
1Fh
Hardware B
M
C
20h
Interface
O
W
21h
Eject Media
O
C
22h
Download
Fail
O
W
23h
Drive
Humidity
Drive
Temperature
Drive Voltage
O
W
O
W
O
W
Predictive
Failure
Diagnostics
Required
O
C
O
W
28h
Loader
Hardware A
O
C
29h
Loader Stray
Tape
O
C
2Ah
Loader
Hardware B
O
W
24h
25h
26h
27h
6-22
Recommended application client message
The tape drive has a hardware fault:
1. Eject the tape or magazine.
2. Reset the drive.
3. Restart the operation.
The tape drive has a hardware fault:
1. Turn the tape drive off and then on again.
2. Restart the operation.
3. If the problem persists, call the tape drive
supplier helpline.
Check the tape drive user’s manual for device
specific instructions on turning the device power
on and off.
The tape drive has a problem with the host
interface:
1. Check the cables and cable connections.
2. Restart the operation.
The operation has failed:
1. Eject the tape or magazine.
2. Insert the tape or magazine again.
3. Restart the operation.
The firmware download has failed because you
have tried to use the incorrect firmware for this
tape drive.
Obtain the correct firmware and try again.
Environmental conditions inside the tape drive
are outside the specified humidity range
Environmental conditions inside the tape drive
are outside the specified temperature range
The voltage supply to the tape drive is outside the
specified range
A hardware failure of the tape drive is predicted.
Call the tape drive supplier helpline.
The tape drive may have a fault. Check for
availability of diagnostic information and run
extended diagnostics if applicable.
Check the tape drive users manual for
instructions on running extended diagnostic tests
and retrieving diagnostic data
The changer mechanism is having difficulty
communicating with the tape drive:
1. Turn the autoloader off then on.
2. Restart the operation.
3. If problem persists, call the tape drive supplier
helpline.
A tape has been left in the autoloader by a
previous hardware fault:
1. Insert an empty magazine to clear the fault.
2. If the fault does not clear, turn the autoloader
off and then on again.
3. If the problem persists, call the tape drive
supplier helpline.
There is a problem with the autoloader
mechanism.
Probable cause
The drive has a
hardware fault that
requires reset to
recover.
The drive has a
hardware fault which is
not read/write related or
requires a power cycle
to recover.
The drive has identified
an interfacing fault
Error recovery action
Firmware download
failed
Drive humidity limits
exceeded
Drive temperature limits
exceeded
Drive voltage limits
exceeded
Predictive failure of
drive hardware
The drive may have had
a failure which may be
identified by stored
diagnostic information
or by running extended
diagnostics (e.g. Send
Diagnostic)
Loader mechanism is
having trouble
communicating with the
tape drive
Stray tape left in loader
after previous error
recovery
Loader mechanism has
a hardware fault
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
Code
2Bh
Flag
Loader Door
Type
O
Flag Type
C
2Ch
Loader
Hardware C
O
C
2Dh
Loader
Magazine
O
C
2Eh
Loader
Predictive
Failure
Lost
Statistics
Tape
directory
invalid at
unload
O
W
O
W
O
W
O
C
32h
33h
36h
No start of
data
Recommended application client message
The operation has failed because the autoloader
door is open:
1. Clear any obstructions from the autoloader
door.
2. Eject the magazine and then insert it again.
3. If the fault does not clear, turn the autoloader
off and then on again
4. If the problem persists, call the tape drive
supplier helpline.
The autoloader has a hardware fault:
1. Turn the autoloader off and then on again.
2. Restart the operation.
3. If the problem persists, call the tape drive
supplier helpline.
Check the autoloader users manual for device
specific instructions on turning the device power
on and off.
The autoloader cannot operate without the
magazine.
1. Insert the magazine into the autoloader
2. Restart the operation.
A hardware failure of the changer mechanism is
predicted.
Call the tape drive supplier helpline.
Media statistics have been lost at some time in
the past
The tape directory on the tape cartridge just
unloaded has been corrupted.
File search performance will be degraded
The tape directory can be rebuilt by reading all the
data.
The start of data could not be found on the tape:
1. Check you are using the correct format tape
2. Discard the tape or return the tape to your
supplier
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Probable cause
Tape changer door
open
The loader mechanism
has a hardware fault
that is not mechanically
related.
Loader magazine not
present
Predictive failure of
loader mechanism
hardware
Drive or library powered
down with tape loaded
Error prevented the tape
directory being updated
on unload.
Tape damaged, bulk
erased, or incorrect
format
6-23
6.Command Specification
LOG SENSE
6.6.7. Tape Log Page (Sony Unique)
This page is a Sony unique page which provides information on the tape currently being used. This log cannot be
cleared and has the following format:
Table 6-21: Tape Log Page
Bit
Byte
0
1
2
3
4
5
6
7
8
3+m
7
6
5
4
Reserved
3
(MSB)
Page Code (30h)
Reserved
Page Length (98h)
(MSB)
Parameter Code
2
1
0
(LSB)
DU (0)
DS (1)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (m)
Parameter Value
LBIN (0)
LP (0)
This page is used to return Tape Log information to the host in a format which conforms to the LOG SENSE
command page format.
Supported Parameter Codes in this page are listed below along with their meanings:
Table 6-22: Tape Log parameter codes
Parameter Code
Description
Length
001h
002h
003h
004h
Current Groups Written
Current Rewritten Tracks
Current Groups Read
Current C3 ECC Count
8
8
8
8
005h
006h
007h
008h
Previous Groups Written
Previous Rewritten Tracks
Previous Groups Read
Previous C3 ECC Count
8
8
8
8
009h
00Ah
00Bh
00Ch
Total Groups Written
Total Rewritten Tracks
Total Groups Read
Total C3 ECC Count
8
8
8
8
00Dh
Load Count
4
This information is contained within RAM in the Drive Controller. The log is updated as the tape is used.
The term 'current' refers to information generated during the current load of the tape; 'previous' refers to information
generated during the last tape load; 'total' refers to information generated during the life of the tape since it was first
initialized including the current load.
Use: An estimate of reading and writing performance can be made by the ratios of 'Total Groups Written' to
'Rewritten Tracks' and 'Groups Read' to 'C3 ECC Count'. An indication of tape degradation can be gained by
comparing these ratios for 'current', 'previous' and 'total' entries.
Any attempt to change this page using LOG SELECT will result in a CHECK CONDITION with a Sense Key of
ILLEGAL REQUEST. The current cumulative values will be returned regardless of the Page Control field in the LOG
SENSE CDB.
6-24
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
6.6.8. Tape Capacity Log Page (Sony Unique)
The tape Capacity Log Page is used to indicate the approximate capacity of the tape currently being used. The PC
field of the LOG SENSE command is ignored for this field.
When the AIT bit is set to ZERO in Mode Sense Page 31h, the 36 bytes of the log page shall be returned.
When the AIT bit is set to ONE, the 1028 bytes of the log page shall be returned.
The 36 bytes of the log page have the following format.
Table 6-23: Tape Capacity Log Page
Bit
Byte
0
1
2
3
4
5
6
7
8
11
7
6
4
3
2
1
Page Code (31h)
Reserved (0)
Page Length (00 20h when AIT bit =0
04 00h when AIT bit =1)
Parameter Code
(MSB)
(MSB)
DU (0)
5
DS (1)
TSD (1)
(MSB)
ETC (0)
TMC (11)
Parameter Length (04h)
Parameter Value
0
(LSB)
LBIN (0)
(LSB)
LP (0)
(LSB)
Tape Capacity Log Page Parameters:
Table 6-24: Tape Capacity Log Parameter Codes
Parameter Code
0001
0002
0003
0004
Description
Remaining capacity, partition 0 (kilobytes)
Reserved
Maximum capacity, partition 0 (kilobytes)
Reserved
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-25
6.Command Specification
LOG SENSE
6.6.9. Drive Usage Log Page (Sony Unique)
This page is a SONY unique page which provides information on the drive currently being used. This log cannot be
cleared and has the following format.
Table 6-25: Drive Usage Log Page
Bit
Byte
0
1
2
3
4
5
6
7
8
7+m
7
6
5
4
Reserved
3
2
1
0
Page Code (33h)
Reserved
Page Length (0244h)
(MSB)
(LSB)
(MSB)
Parameter Code
DU (0)
DS (1)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (m)
Parameter Value
(LSB)
LP (0)
LBIN (0)
This page is used to return the vendor unique Drive Usage Log information to the host in a format which conforms to
the Log Sense command page format.
Supported Parameter Codes in this page are listed below with their meaning:
Table 6-26: Drive Usage Supported Parameter Codes
Code
Description
Length
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000ah
000bh
000ch
000dh
000eh
000fh
0010h
0011h- 0020h
Power on minutes
Drum revolution minutes
Fan revolution minutes
Reserved
Load count
Thread count
MD serial number
All board revision number
Drive serial number
Mechanism motion count (pinch on count)
Cleaning Request Flag and Interval (minutes)
EEPROM written count 1
EEPROM written count 2
Reserved
Reserved
Reserved
Last 16 Mechanism Error Event List
4
4
4
4
4
4
4
8
4
4
4
4
4
4
4
4
8×16
Default
Cumulative
00000000h
00000000h
00000000h
n/a
00000000h
00000000h
n/a
n/a
n/a
00000000h
00000000h
00000000h
00000000h
n/a
n/a
n/a
n/a
Default
Threshold
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
n/a
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
n/a
n/a
n/a
Cleaning Request Flag and Interval Parameter Format
Byte 3
b7
↔
Byte 2
b b b
6 5 4
b
3
b
2
b
1
b
0
b b
7 6
Byte 1
b
5
b
4
b
3
b
2
b
1
b
0
b
7
b
6
Byte 0
b
5
b
4
b
3
b b b b b
2 1 0 7 6
b
5
b
4
b
3
b
2
b b
1 0
← Drum Rotation Time Interval from the last cleaning (minutes) →
Cleaning Request Status (1 = Request)
6-26
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
All board revision number is 8 bytes long and has a following format:
Table 6-27: All Board Revision Number Parameter Format
0
1
2
3
4
5
6
7
Set revision
Board revision
Mechanism revision
RF revision
Each Mechanism Error Event is 24 bytes long and has following format:
Table 6-28: Mechanism Error Event Format
Byte offset
0-3
4
5-6
7
Meaning
Drum revolution minutes
Last mc Command
Error code
Reserved
6.6.10. Read and Write Frame Error Counter Page
The Read and Write Error Counter Page has the following format. All fields in these logs are initialized to ZERO in
the following circumstances:
At Power On
After a cassette loading
After a user sends a request for initialization through Log Select
After a SCSI Bus Reset
Following configuration for error rate testing
Table 6-29: Read and Write Frame Error Counter Page
Bit
Byte
0
1
2
3
7
6
5
4
3
2
1
0
Page Code (34h Write Frame Error Counters, 35h Read Frame Error Counters)
Reserved
(MSB)
Page Length (88h)
(LSB)
Error Counter Descriptors
Bit
Byte
0
1
2
3
4
7
7
6
5
(MSB)
DU (0)
4
3
2
1
0
LBIN (0)
(LSB)
LP (0)
Parameter Code
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (0)
Parameter Length (4)
Parameter Value
(LSB)
Parameter Code: This identifies which parameter of data is being transferred. The following codes are supported for
each Error Counter Page.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-27
6.Command Specification
LOG SENSE
Parameter Code
0001h Frame Read or Write
0002h Main Data SYMN Block Errors CH1
0003h Main Data SYMN Block Errors CH2
0004h Reserved
0005h Reserved
0006h Reserved
0007h Reserved
0008h Total Retry Count (Read Only)
0009h C2 un-correctable Block (Read Only)
000Ah SYMN Block Errors R1
000Bh SYMN Block Errors R2
000Ch SYMN Block Errors R3
000Dh SYMN Block Errors R4
000Eh Reserved
000Fh Reserved
0010h Reserved
0011h Reserved
Length
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Default Cumulative
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Default Threshold
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
FFFFFFFFh
Block_Error_Rate [CH1] = Param0002h / (Param0001h×N)
Block_Error_Rate [CH2] = Param0003h / (Param0001h×N)
Block_Error_Rate [R1] = Param000Ah / (Param0001h×N/2)
Block_Error_Rate [R2] = Param000Bh / (Param0001h× N/2)
Block_Error_Rate [R3] = Param000Ch / (Param0001h× N/2)
Block_Error_Rate [R4] = Param000Dh / (Param0001h× N/2)
[N]AIT-3Ex Tape: N = 206
AIT3/2 Tape: N = 336
AIT1
Tape: N = 224
The Format of this log page is shown in Table 6-30
Table 6-30: Read and Write Frame Error Counter Page Header format
Bit
Byte
0
1
2
3
7
6
5
4
3
2
1
0
Page Code (34h Write Frame Error Counters, 35h Read Frame Error Counters)
Reserved
(MSB)
Page Length (88h)
(LSB)
The Error Counter Parameter format is shown in Table 6-31
6-28
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
Table 6-31: Read and Write Frame Error Counter Page Parameter format
Bit
Byte
0
1
2
3
4
7
7
6
5
(MSB)
DU
(0b)
4
3
2
1
0
LBIN
(0b)
(LSB)
LP
(0b)
Parameter Code
DS
(1b)
TSD
(0b)
(MSB)
ETC
TMC
(0b)
(00b)
Parameter Length (4)
Parameter Value
(LSB)
6.6.11. Data Compression Transfer Log Page (Sony Unique)
The page allows the host to monitor the performance of the ALDC compression. The PC field in LOG SENSE
determines whether current cumulative, or current/default threshold values are returned. The page has the following
format:
Table 6-32: Data Compression Transfer Log Page
Bit
Byte
0
1
2
3
4
5
6
7
8
11
7
6
5
Reserved
4
3
2
(MSB)
Page Code (39h)
Reserved
Page Length (58h)
(MSB)
Parameter Code (n)
1
0
(LSB)
DU (0)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (4)
Parameter Value
LBIN (0)
(LSB)
LP (0)
(LSB)
Data Compression Log Page Fields:
Supported Parameter Codes in this page and their meanings are as follows:
Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
Description
Number of entities written
Number of entities read
Number of records written
Number of records read
Megabytes to data compression
Megabytes from data compression
Megabytes to tape
Megabytes from tape
Logical entity size
Physical entity size
Uncompressed entities
Entities Written/Read: The total number of complete entities written to or read from the tape since the last power-on
or Clear Log operation.
Records Written/Read: The total number of records (both compressed and uncompressed) written to or read from
the tape since the last power-on or Clear Log operation.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-29
6.Command Specification
LOG SENSE
Kilobytes to/from Data Compression: The total number of kilobytes written to or read from the tape since the last
power-on or Clear Log operation. For Kilobytes from Data Compression, this number may be greater than the
number of kilobytes transferred to the host due to read ahead.
Logical Entity Size: The logical size of the last entity written to or read from the tape: size = number of record in
entity × record size in bytes
Physical Entity Size: The physical size of the last entity written to or read from the tape: size = entity header length
+ uncompressed data length
Uncompressed Entities: The total number of times non-ALDC entities have been encountered on the tape during
read operations since the last power-on or Clear Log operation.
6.6.12. AIT Log Page (Sony Unique)
This page is for the AIT original Tape Log. The AIT Tape Log of each fields are larger than legacy Tape Log Page.
The legacy Tape Log Page returns the part of AIT original. This page indicated the Partition Information at the
current Partition.
Table 6-33: AIT Log Page
Bit
Byte
0
1
2
3
7
5
4
3
2
1
0
Page Code (3Ch)
Reserved
Page Length (n+1)
(MSB)
(LSB)
Bit
Byte
0
1
2
3
4
N
6
7
6
(MSB)
DU (0)
5
4
3
2
1
0
Parameter Code (0001h - 0012h and 0101h - 0112h)
DS (1)
(MSB)
TSD (0)
ET (0)
TMC (00)
Parameter Length (n-3)
Parameter Value
LBIN (0)
(LSB)
LP (0)
(LSB)
Parameter Code:
Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
000Dh
000Eh
000Fh
0010h
0011h
0012h
6-30
Description
Current Groups Written
Current Rewritten Tracks
Current Groups Read
Current C3 ECC Count
Previous Groups Written
Previous Rewritten Tracks
Previous Groups Read
Previous C3 ECC Count
Total Groups Written
Total Rewritten Tracks
Total Groups Read
Total C3 ECC Count
Load Count
Access Count
Update Replace Count
Last Valid Absolute Frame Number
Partition Attribute
Maximum Absolute Frame Number
Length
8
8
8
8
8
8
8
8
8
8
8
8
4
4
8
8
8
8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
Previous Groups Written: This is the number of groups physically written to the tape or partition since the last
update of the System area. Where Repeat Writing is in force, this count increments for each instance.
Total Groups Written: This is the total number of groups physically written to the tape or partition since the first time
the tape or partition was written. The number accumulates over the life of the tape but is ZEROed by a format pass.
Where Repeat Writing is in force, this count increments for each instance.
Previous Groups Read: This is the number of groups physically read from the tape or partition since the last update
of the System area.
Total Groups Read: This is the total number of groups physically read from the tape or partition since the first time
the tape or partition was written. This does not include any reading as part of a Read-After-Write check. The number
accumulates over the life of the tape but is ZEROed by a format pass.
Total Rewritten Frames: This is the total number of frames on the tape or within the partition that were needed to be
rewritten since the tape or partition was first written. It is incremented by 1 each time a frame is repeated following
error detection by the Read-After-Write process. This count does not include any frames which are written between
the original frame and its rewrite. The number accumulates over the life of the tape but is ZEROed by a format pass.
Total 3rd ECC Count: This is the number of groups which have been physically read and data has not been
recovered without requiring the use of C3 correction since the first time the tape or partition was written. The number
accumulates over the life of the tape but is ZEROed by a format pass.
Access Count: This is the number of times the drive accesses the partition. The both an "Unload" and a "Change
Partition" is the event for incrementing the Access Count counter.
Update Replace Count: This is the number of times the drive update the partition.
Previous Rewritten Frames: This is the number of frames on the tape or within the partition that were needed to be
rewritten since the last update of the System area. It is incremented by 1 each time a frame is repeated following
error detection by the Read-After-Write process. This count does not include any frames which are written between
the original frame and its rewrite.
Previous 3rd ECC Count: This is the number of groups which have been physically read and data has not been
recovered without requiring the use of C3 correction since the last update of the System area.
Load Count: This is the number of times the tape has been loaded since the first time a tape was written. One load
consists of threading the media around the drum of the drive mechanism, positioning the tape ready for use and later
unthreading the media. The number accumulates over the life of the tape but is ZEROed by a format pass. This field
is Reserved in the System Log of Partition 0 of a multiple partitioned tape.
Last Valid Absolute Frame Number: This field shall specify the Absolute Frame Number which is the number of
Frames written since the beginning of the partition, excluding any Frames that are written in the test area. The first
Frame of the Reference area is the first Frame after the Logical Beginning-Of-Tape (LBOT) point of the current
partition and has an Absolute Frame Number of 1. Any discontinuous or repeated numbers shall occur only in an
Amble Frame sequence.
Maximum Absolute Frame Count: This field shall specify the Absolute Frame Number of the last Frame of the last
EOD Area as the Maximum Absolute Frame Number. After that, the Maximum Absolute Frame Number is equal to
the Valid Maximum Absolute Frame Number, because the whole data area in the partition contains valid data. The
Maximum Absolute Frame Number shall not be changed as long as the partition size is the same.
Partition Attributes: Both Log Sense and Log Select are available for this field. This field shall specify the attribute
of the partition as follows.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-31
6.Command Specification
LOG SENSE
6.6.13. MIC Fixed Length Information Page (Sony Unique)
Table 6-34: MIC Fixed Length Information Page
Byte
0
1
2
3
Bit
7
(MSB)
6
5
4
3
2
1
0
Page Code (3Dh)
Reserved
Page Length (n+1)
(LSB)
Parameter Code:
Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
000Dh
000Eh
000Fh
0010h
0011h
0012h
0013h
0014h
0015h
0016h
0017h
0018h
Description
MIC Logical Format Type
Device Configuration bits
Available free byte count
User Volume Note size
Reserved
Cassette Serial Number, etc.
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
User Partition Note Map
Accumulative System Log
Volume Information
Element Address
User Partition Note size for Partition #0
Length
4
4
4
4
8
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
96
96
4
4
Note:
1.
Parameter Code 0002h AIT Device Configuration Byte is the same byte value returned in Mode Sense Page
31h byte 2. See page 6-58 paragraph 6.8.1 for a description of the fields in this byte.
2.
Parameter Code 0003h Available Free Byte Count represents the current user MIC memory that is available
for writing data to the MIC using the Log Select command through Page 3Eh Parameter Code 0001h, 0002h,
…. 000Nh. If Available Free Byte Count is 1 or higher the application may use exactly that size or smaller to
write MIC User data. If this field is ZERO a Check Condition status is returned if attempts are made to write
data to the MIC. If the application attempts to write data to the MIC that is larger than this field a Check
Condition status will also be returned. In both cases where Check Condition status is returned no data is
written to the MIC.
3.
Parameter Code 0014h List of Partitions is a bit map field that represents all 256 partitions. Below is a diagram
of the bit map ordering of the Partition Note data. A "1" in the bit field for the partition indicates there is Partition
Note in MIC; a "0" in the bit field indicates there is no Partition Note in MIC for that partition. As an example, if
partition 0 and partition 1 have Notes data Byte #0 below will be 0C0h, and Byte #1 to #31 will be 00h.
6-32
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
4.
6.Command Specification
Parameter Code 0017h Drive Element Address data field is reserved. The drive always returns ZERO for this
field.
0
1
2
3
4
7
0
1
2
3
4
5
6
7
0
1
2
3
4
7
0
1
2
3
4
7
0
1
2
3
4
7
0
1
2
3
4
35
(MSB)
DU (0)
Parameter Code (0001h)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (2)
MIC Logical Format Type
LBIN (0)
(LSB)
LP (0)
(LSB)
(MSB)
DU (0)
AIT
(MSB)
Parameter Code (0002h)
DS 1)
TSD (0)
DEVICE
ABS
ETC (0)
TMC (00)
Parameter Length (2)
Reserved
ULPBOT
PRTH
PONEJ
Reserved
LBIN (0)
(LSB)
LP (0)
SysLogAlive
(LSB)
(MSB)
DU (0)
Parameter Code (0003h)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (2)
Available Free Byte Count
LBIN (0)
(LSB)
LP (0)
(LSB)
(MSB)
DU (0)
Parameter Code (0004h)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (2)
User Volume Note Size
LBIN (0)
(LSB)
LP (0)
(LSB)
(MSB)
DU (0)
Parameter Code (0005h)
DS (1)
TSD (0)
(MSB)
ETC (0)
TMC (00)
Parameter Length (8)
Reserved
LBIN (0)
(LSB)
LP (0)
(LSB)
(MSB)
DU (0)
(MSB)
Parameter Code (0006h)
DS (0)
TSD (1)
ETC (0)
TMC (00)
Parameter Length (36)
Cassette Serial Number (ASCII Code)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LBIN (0)
(LSB)
LP (1)
(LSB)
6-33
6.Command Specification
0
1
2
3
4
35
LOG SENSE
(MSB)
DU (0)
Parameter Code (0007h – 0013h)
DS (1)
(MSB)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (36)
Reserved
(LSB)
LP (0)
(LSB)
0
1
2
3
4
11
12
35
Parameter Code (0014h)
(User Partition Note Map)
DU (0)
DS (1)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (32)
(msb for the Partition 0)
64 bits of Map
0
1
2
3
(MSB)
4
LBIN (0)
(MSB)
LBIN (0)
(LSB)
LP (0)
(lsb for the Partition 63)
Reserved
DU (0)
DS (1)
Parameter Code (0015h)
(Accumulative System Log)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (62)
LBIN (0)
(LSB)
LP (0)
(MSB)
CURRENT AMOUNT OF DATA WRITTEN
9
10
(LSB)
(MSB)
The CURRENT WRITE RETRIES COUNT
15
16
(LSB)
(MSB)
CURRENT AMOUNT OF DATA READ
21
22
(LSB)
(MSB)
CURRENT READ RETRIES COUNT
27
28
(LSB)
(MSB)
PREVIOUS AMOUNT OF DATA WRITTEN
33
34
(LSB)
(MSB)
PREVIOUS WRITE RETRIES COUNT
39
40
(LSB)
(MSB)
PREVIOUS AMOUNT OF DATA READ
45
6-34
(LSB)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
46
6.Command Specification
(MSB)
PREVIOUS READ RETRIES COUNT
51
52
(LSB)
(MSB)
TOTAL AMOUNT OF DATA WRITTEN
57
58
(LSB)
(MSB)
TOTAL WRITE RETRIES COUNT
63
64
(LSB)
(MSB)
TOTAL AMOUNT OF DATA READ
69
70
(LSB)
(MSB)
TOTAL READ RETRIES COUNT
73
74
(LSB)
(MSB)
LOAD COUNT
81
82
(LSB)
(MSB)
TOTAL CHANGE PARTITION COUNT
87
88
(LSB)
(MSB)
TOTAL PARTITION INITIALIZE COUNT
93
0
1
2
3
4-23
24-27
28
29-31
32
33
34
41
42-99
(LSB)
(MSB)
DU (0)
DS (1)
Reserved
(msb for Partition 0)
Parameter Code (0016h)
(Volume Information)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (94)
Reserved (Eject Status)
Reserved (Reel Diameter)
Reserved
Initialize Count
ABS
SysLogAlive
Last Partition Number
64 of bit array
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LBIN (0)
ULPBOT
(LSB)
LP (0)
AIT
(lsb for Partition 64)
Reserved
6-35
6.Command Specification
0
1
2
3
4
7
0
1
2
3
4
9
6-36
LOG SENSE
(MSB)
DU (0)
DS (1)
(MSB)
Parameter Code (0017h)
(Element Address)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (4)
SDX-800V always return 00 00 00 00h
LBIN (0)
(LSB)
LP(0)
(LSB)
(MSB)
DU (0)
(MSB)
DS (1)
Parameter Code (0018h)
(User Partition Note for Partition 0)
TSD (0)
ETC (0)
TMC (00)
Parameter Length (2)
User Partition Note Size for Partition 0
LBIN (0)
(LSB)
LP (0)
(LSB)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
LOG SENSE
6.Command Specification
6.6.14. MIC Variable Length Information Page (Sony Unique)
Page 3Eh is a variable length page. That is not defined by ANSI. This page is Sony Vendor Unique.
Important NOTE:
1. Only one Parameter Code in Page 3Eh is transferred at a time.
2. Byte position 3 of Parameter Code in the Page 3Eh is Reserved. (Should be set to ZERO.)
3. Parameter Length for the contents of the Parameter Code in Page 3Eh is stored at the byte position 4 and 5.
4. The Page Length field in the Page Code indicates the total number of bytes that follow this byte. This value is
independent of what is specified for the Allocation Length in the CDB.
Table 6-35: MIC Variable Length Information Page
Bit
Byte
0
1
2
3
7
0
1
2
3
4
5
6
N
5
4
3
2
1
0
Page Code (3Eh)
Reserved
Page Length (n-3)
(MSB)
(LSB)
Parameter Code
0001h
0002h
0
1
2
3
4
5
6
N
6
Description
User Volume Note
User Partition Note for Partition 0
(MSB)
DU (0)
DS (1)
(MSB)
Parameter Code (0001h)
(User Volume Note)
TSD (0)
ETC (0)
TMC (00)
Reserved
User Data Length
(LSB)
LP (1)
LBIN (1)
(LSB)
(MSB)
User Data
(LSB)
(MSB)
DU (0)
(MSB)
DS (1)
Parameter Code (0002h)
(User Partition Note for Partition #0)
TSD (0)
ETC (0)
TMC (00)
Reserved
User Data Length
(LSB)
LP (1)
LBIN (1)
(LSB)
(MSB)
User Data
(LSB)
Note:
1.
If there is no Note data in MIC for the Parameter Code specified in the CDB a Check Condition status will be
returned.
2.
If the CDB allocation length is ZERO a Good status is always returned and there is no data phase.
3.
If the CDB allocation length is non-ZERO and there is data in MIC for the Parameter Code data will be returned
up to the size of the MIC data, as limited by the allocation length. For example, if the CDB allocation length is
0FFh and MIC data size for the Parameter Code is 020h 020h data will return. If the CDB allocation length is
010h and the MIC data size for the Parameter Code is 020h only 010h data will be returned.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-37
6.Command Specification
MODE SELECT
6.7. MODE SELECT(6/10) 15h and 55h
Mode Select 6 CDB Format:
Bit
7
Byte
0
1
2
3
4
5
6
5
4
3
Operation Code (15h)
PF
Reserved
Reserved
Parameter List Length
Control
Obsolete
2
1
Reserved
0
SP (0)
Mode Select 10 CDB Format:
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
Obsolete
5
4
3
2
Operation Code (15h)
PF
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Parameter List Length (MSB)
Parameter List Length (LSB)
Control
1
0
SP (0)
MODE SELECT enables the Host to configure the drive. Similarly MODE SENSE enables the Host to identify which
configuration parameters the drive supports and what its current configuration is. Implementing MODE SELECT and
MODE SENSE requires a certain amount of "handshaking" between the Host and the drive. Before configuring the
drive, the Host should issue a MODE SENSE. This allows the drive to return its current configuration and indicate
what parameters are configurable. The Host interprets this information and may then issue a MODE SELECT
command to set up the drive to the Host’s preferred configuration.
Note: In the MODE SELECT and MODE SENSE (operation code 1Ah) descriptions much of the information
overlaps and therefore the two descriptions should be read in conjunction.
MODE SELECT allows the initiator to specify configuration parameters to the drive.
The drive always powers-up with its default configurations set. This is also true, if the drive receives a BUS DEVICE
RESET message or a hard reset through the RST line on the SCSI bus.
PF: The Page Format bit indicates that the data sent by the Host after the MODE SELECT header and block
descriptors complies with the definition of pages as set out in SCSI-2 or SCSI-3.
SP: The Save Parameters bit instructs the drive to save all savable pages. This bit is not supported and the drive will
return a CHECK CONDITION status with an ILLEGAL REQUEST sense key, if it is set.
Parameter List Length: This specifies the length, in bytes, of the MODE SELECT parameter list that is transferred
during the DATA OUT phase. A ZERO parameter list length indicates that no data is transferred. The Parameter List
length must be a value which coincides with header, block descriptor or page boundaries. If this does not occur then
the drive will return a CHECK CONDITION status with an ILLEGAL REQUEST sense key set.
The MODE SELECT parameter list shown below, contains a four-byte header, followed by one eight-byte block
descriptor.
6-38
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
Table 6-36: MODE SELECT parameter list
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
(MSB)
Buffered Mode (001b)
Block Descriptor Length (08h)
Density Code
Number of Blocks (00 00 00h)
Speed (00h)
(LSB)
Reserved
Block Length
(MSB)
(LSB)
Buffered Mode: Buffered Mode is the mechanism by which the drive implements Immediate Reporting on WRITE
commands.
If the field is ZERO, then the drive does not report a GOOD status on WRITE commands until the data blocks are
actually written to tape (not support).
If the Buffered Mode field is one, then the drive reports GOOD status on WRITE commands as soon as the data
block has been transferred to the buffer. This field should be set to ONE.
Speed: The drive only supports one speed, the default speed. Because of this, this field must be set to ZERO. Any
other value will cause a CHECK CONDITION status with an ILLEGAL REQUEST sense key is returned.
Block Descriptor Length: This specifies the length in bytes of all the block descriptors. Since the drive only allows
one block descriptor, this value must be eight. Any other value will cause a CHECK CONDITION status with an
ILLEGAL REQUEST sense key to be returned.
Note: The block descriptor specifies the media characteristics for the SDX drive. The block descriptor contains the
density code, number of blocks and block length fields.
Density Code: The supported values for the density code field are defined in the following table.
Note: 00h - Default: The use of the word “Default” is SCSI specific. It instructs the drive to use its default or only
density.
Table 6-37: Sequential-Access Density Codes
Code Value
00h
30h
31h
32h
38h
39h
3Ah
3Bh
7Fh
Code Value
Default Format
AIT-1 Format
AIT-2 Format
AIT-3 Format
AIT-E Turbo Format
AIT-1 Turbo Format
AIT-2 Turbo Format
AIT-3Ex
Format
No change from previous density
Number of Blocks: A MODE SENSE field which will be returned as ZERO, indicating that all of the remaining
logical blocks on the media will have the medium characteristics specified by the block descriptor, or until a
subsequent MODE SELECT command changes those parameters. This field must be set to ZERO on a MODE
SELECT otherwise a CHECK CONDITION status will be returned with an ILLEGAL REQUEST sense key.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-39
6.Command Specification
MODE SELECT
Block length: The Block Length field specifies the length in bytes of each logical block transferred over the SCSI
bus. A block length of ZERO indicates that the length is variable. Any other value indicates the number of bytes per
block that the drive must handshake over the bus. This establishes block length such that the transfer length for
read, write type commands will be a block count not a byte count.
Note: It is value of this field together with the Fixed Bit Field in the READ, or WRITE commands that determine
whether the drive is in Fixed or Variable block mode.
Mode
Fixed Bit in Read, Write
Fixed Block
Variable Block
Block Length in
Mode Select/Sense
Block Size
0
1
0
The default fixed block size is 0 bytes however, if a fixed command (fixed bit of ONE) is received, the drive will return
the CHECK CONDITION status with an ILLEGAL REQUEST sense key and the additional sense code shall be set
to COMMAND SEQUENCE ERROR.
Note: Minimum block-size is 4. The figures must be multiples of 4, otherwise CHECK CONDITION status will be
return, and Sense Key will be ILLEGAL REQUEST.
Following the Block Descriptor are the MODE SELECT pages. They are the method by which the device parameters
are set. Each page has a two byte header which identifies the page code and indicates the number of bytes in that
page.
Table 6-38: MODE SELECT Page Header
Bit
Byte
0
1
7
6
PS
Reserved
5
4
3
2
1
0
Page Code
Additional Page Length
PS: when the Page Savable bit is set, this indicates that the page contains saved parameters. This bit will never be
set as there is no non-volatile RAM on the drive into which parameter data may be saved.
The page codes that are supported are:
Table 6-39: Supported MODE SELECT Page Codes
Page Code
00h
02h
0Ah
0Fh
10h
11h
1Ch
31h
32h
33h
3Fh
Description
Standard Sense
Disconnect-Reconnect
Control Mode Page
Data Compression Control
Device Configuration
Medium Partitions Parameter
Information Exception Control
AIT Device Configuration
Append Partition (not support)
Delete Partition (not support)
Return All Pages
Additional Page Length: Indicates the number of bytes in that page. The value does not, however, include bytes 0
and 1. The length is returned on MODE SENSE and must subsequently be set to the same value when performing
MODE SELECT.
If the page length does not match that expected by the drive a CHECK CONDITION status is returned with the sense
key to set to ILLEGAL REQUEST.
The drive also returns a CHECK CONDITION status with an ILLEGAL REQUEST sense key if the Host sends an
unsupported Page Code, a page field with values that are not supported or are not changeable. In this case, no
parameters will have been changed by the command.
6-40
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
6.7.1. Disconnect-Reconnect Page (02h)
The drive supports the Disconnect-Reconnect Page which has the following format:
Table 6-40: Disconnect-Reconnect Page
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
7
6
PS(0)
Reserved
5
4
3
2
1
0
Page Code (02h)
Page Length (0Eh)
Buffer Full Ratio (00h)
Buffer Empty Ratio (00h)
Bus Inactivity Limit (00h)
(MSB)
(LSB)
(MSB)
Disconnect Time Limit (0000h)
(MSB)
Connect Time Limit (00h)
(MSB)
Maximum Burst Size (4000h)
(LSB)
(LSB)
(LSB)
Reserved
Fair Arbitration (00b)
Reserved
Reserved
Reserved
Reserved
DTDC
Buffer Full Ratio, Buffer Empty Ratio, Bus Inactivity Limit and Connect Time Limit fields are not supported by the
drive if set to non-ZERO values a CHECK CONDITION status is returned with ILLEGAL REQUEST sense key set.
Disconnect Time Limit: This field indicates the minimum time in 100 microsecond increments that the drive shall
wait after releasing the SCSI bus before attempting re-selection. This should be 0 and this is non-changeable field.
Maximum Burst Size: This field defines the maximum amount of data that the drive shall transfer during a data
phase before disconnecting. This value is expressed in increments of 512 bytes. This is non-changeable field and
should be 4000h.
Note: 512 (200h) × 16384 (4000h) = 8388608(8 Mbytes) which means that the Maximum Burst Size is
approximately equal to SDX-800V Buffer size for SCSI side.
FAIR ARBITRATION: This field indicates whether the drive shall use fair or unfair arbitration when requesting an
interconnect tenancy. Setting this field to 1 will enable the SCSI Bus Fairness protocol. Setting this field to zero will
disable it. The drive determines fairness by monitoring prior arbitration attempts by other SCSI devices. It shall
postpone arbitration for itself until all lower priority SCSI devices that previously lost arbitration either win a
subsequent arbitration or discontinue their arbitration attempts. It shall monitor the arbitration attempts of the other
SCSI devices and refresh the fairness register with the SCSI ID’s of any lower priority SCSI devices that lost
arbitration. This field is not support.
DTDC: This field defines further restrictions on when a disconnect is permitted.
DTDC
Description
00b
Data transfer disconnect control is not used. Disconnect is controlled by the other field in this
page.
01b
A target shall not attempt to disconnect once the data transfer of a command has started until all
data the command is to transfer has been transferred. The connect time limit and bus inactivity
limit are ignored during the data transfer.
10b
Reserved
11b
A target shall not attempt to disconnect once the data transfer of a command has started until the
command is complete. The connect time limit and bus inactivity limit are ignored once data
transfer has started.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-41
6.Command Specification
MODE SELECT
6.7.2. Control Mode Page (0Ah)
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
7
6
PS (0)
Reserved
5
4
3
2
1
0
Page Code (0Ah)
Page Length (0Ah)
Reserved
Reserved
Reserved
Reserved
AUTOLOAD MODE
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
The AUTOLOAD MODE field specifies the action to be taken by the drive when a media is inserted.
AUTOLOAD MODE field
Value
000b
001b
010b
011b-111b
6-42
Definition
Medium shall be loaded for full access
Medium shall be loaded for medium auxiliary memory access only
Medium shall not be loaded (not support)
Reserved
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
6.7.3. Data Compression Control Page (0Fh)
The drive supports the Data Compression Control Page which has the following format:
Table 6-41: Data Compression Control Page
Bit
Byte
0
1
2
3
4
7
8
11
12
13
14
15
7
6
PS (0)
Reserved
DCE
DDE
(MSB)
DCC (1)
RED (00h)
5
4
3
2
1
0
Page Code (0Fh)
Page Length (0Eh)
Reserved
Reserved
Compression Algorithm (0003h)
(LSB)
(MSB)
Decompression Algorithm (0003h)
(LSB)
Reserved
Reserved
Reserved
Reserved
Note: If the drive does not support compression the drive will return Check Condition status, and the sense key will
be set to ILLEGAL REQUEST.
This page specifies the parameters for the control of the data compression capability of the drive.
DCE: A Data Compression Enable (DCE) bit of one indicates that data compression is enabled. When this bit is set,
data sent to the device by the initiator shall be processed using the selected compression algorithm before being
written to the medium. A DCE bit of ZERO indicates that data compression is disabled.
DCC: A Data Compression Capable (DCC) bit of one indicates that the drive supports data compression and shall
process data sent to it for transferal to the medium using the selected compression algorithm when the DCE bit is
one. A DCC bit of ZERO indicates that the device does not support data compression. This shall be a
non-changeable field. The SDX-800V has the capability to decompress data and will set this bit to a one.
DDE: A Data Decompression Enable (DDE) bit of one indicates that data decompression is enabled. The SDX-800V
will always decompress the data. Setting this bit to ZERO has no effect.
RED: The Report Exception on Decompression (RED) field indicates the device’s response to a boundary condition
caused by a change in the format of recorded data from:
uncompressed to compressed or compressed to uncompressed
This field is not supported and should be always set to 00b.
Compression Algorithm: The compression algorithm field indicates the compression algorithm the drive will use to
process data sent to it by the initiator (if the DCE bit is one).
The SDX-800V supports the ALDC1 data compression algorithm which is identified by the value: 00 00 00 03h in the
compression algorithm field. A value of ZERO shall indicate that no compression algorithm is currently selected. Any
other values in this field will cause the drive to return a CHECK CONDITION status the sense key shall be set to
ILLEGAL REQUEST.
Decompression Algorithm: For MODE SELECT the decompression algorithm field indicates the decompression
algorithm selected by the initiator for use in subsequent decompression of data encountered on the medium.
The SDX-800V can decompress data recorded with the ALDC1 algorithm therefore this field can be set to 00 00 00
03h. However, the SDX-800V is capable of automatic recognition of the compression algorithm used to process the
data encountered on the medium. Therefore, the drive will override the value in the decompression field (if is set to
ZERO) for a subsequent read operation when ALDC1 compressed data is detected on the media.
For the MODE SENSE command, the decompression algorithm field reflects compression algorithm which was
used to process the data most recently encountered on the medium, during a read operation.
A value of ZERO shall indicate that the data encountered on the medium during the most recent read operation was
uncompressed.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-43
6.Command Specification
MODE SELECT
6.7.4. Device Configuration Page (10h)
The drive supports the Device Configuration Page which has the following format:
Table 6-42: Device Configuration Page
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
7
6
PS (0)
Reserved
Reserved
CAP
(MSB)
DBR (0)
BIS (1)
5
4
3
2
1
0
RBO (0)
(LSB)
REW
Page Code (10h)
Page Length (0Eh)
CAF (0)
Reserved
Active Partition
Write Buffer Full Ratio (00h)
Read Buffer Empty Ratio (00h)
Write Delay Time (64h)
RSmk
AVC (0)
SOCF (00b)
Gap Size (00h)
EOD Defined (000b)
EEG (1)
SEW
(MSB)
Buffer Size at Early Warning (00 00 00h)
Reserved
(LSB)
Select Data Compression Algorithm (0x00)
Reserved
CAP: The Change Active Partition bit, when set to one, indicates that the partition is changed to the one specified by
the Active Partition Field. This is a feature supported by the drive and is discussed below.
CAF: The Change Active Format bit, set to one, indicates that the active format is to be changed to that set in the
Active Format Field. This field is not supported.
Active Partition: Indicates the current partition number in use on the medium.
Setting this field to a non-existing partition number will be rejected by the drive with a CHECK CONDITION status
and the ILLEGAL REQUEST sense key set.
Write Buffer Full Ratio and Read Buffer Empty Ratio: These fields are not supported by the drive. Setting these
fields to anything other than ZERO will cause the drive to return a CHECK CONDITION status and an ILLEGAL
REQUEST sense key.
The drive implements an algorithm which automatically adjusts these ratios so as to maximize streaming to the Host.
Write Delay Time: This field indicates the maximum time, in 100 millisecond increments, that the drive shall wait
with a partially full buffer before forcing the data to tape. The drive defaults to a 10 second delay since the last SCSI
bus activity before the data is flushed from the buffer to the tape. If Write Delay Time is set to ZERO the drive will wait
indefinitely for the data group to be filled.
DBR: This field is not supported and should be always set to ZERO.
BIS: Block Identifiers Supported is set to one to indicate that the media has recorded information about the logical
block ID relative to the partition.
The DBR and BIS bit are only valid on a MODE SENSE command where they are used to report drive capabilities.
These bits are ignored by the drive on a MODE SELECT command. The drive will not return a CHECK CONDITION.
RSmk: The Report Set Mark bit, when set to one, indicates that Set Marks will be reported to the drive. When ZERO,
Set Marks are NOT reported. The default is one, Set Marks reported.
AVC: Automatic Velocity Control function is not supported by the drive and if this bit is set a CHECK CONDITION
status is returned with an ILLEGAL REQUEST sense key.
SOCF: Stop on Consecutive File-marks function is not supported by the drive and if this bit is set a CHECK
CONDITION status is returned with an ILLEGAL REQUEST sense key.
6-44
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
RBO: This field is not supported. If this bit is set a CHECK CONDITION status is returned with an ILLEGAL
REQUEST sense key.
REW: The Report Early-Warning End-of –Media bit is set to ZERO indicates the drive will not report the
early-warning condition on reads but will report early-warning on writes before the physical End-Of –Partition. The
REW bit is changeable. A value of ONE indicates that the drive will report the early-warning condition on writes and
reads.
Gap Size: This field is not used by the SDX-800V and shall be set to ZERO otherwise a CHECK CONDITION with
an ILLEGAL REQUEST sense key will be returned.
EOD Defined: This field shall always be set to ZERO so that the drive will use its default EOD definition to detect and
generate EOD. Any other value will cause the drive to return a CHECK CONDITION status with an ILLEGAL
REQUEST sense key set.
EEG: The Enable EOD Generation bit shall always be set to indicate that drive will generate an EOD. The drive
generates an EOD mark prior to any change of direction, if that change follows a write-type operation. This bit is only
valid on the MODE SENSE command where it is used to report drive capabilities. This bit is ignored by the drive on
a MODE SELECT command. The drive will not return a CHECK CONDITION.
SEW: The Synchronize at Early-Warning bit is set to ONE indicates buffered write data, File-marks and Set-marks at
or after Early-Warning End-of-Media will be written to the Medium. The SEW bit changeable. A value of ZERO
indicates that the target will retain any unwritten buffered data, File-marks, or Set-marks in the buffer when logical
Early-Warning is encountered. The default is 1.
Buffer Size at Early Warning: This field is not supported by the drive and if set a CHECK CONDITION status is
returned with an ILLEGAL REQUEST sense key set.
Select Data Compression Algorithm: The SDX-800V supports the Data Compression Page and that page should
be used instead of this field to control Data Compression. This field is not supported by the drive and if set a CHECK
CONDITION status is returned with an ILLEGAL REQUEST sense key set.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-45
6.Command Specification
MODE SELECT
6.7.5. Medium Partitions Parameter Page (11h)
The drive supports the Medium Partitions Parameter Page, which has the following format:
Table 6-43: Medium Partitions Parameter Page
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
7
6
5
PS (0)
Reserved
4
3
2
1
(MSB)
Page Code (11h)
Page Length (0Ah)
Maximum Additional Partitions (0h)
Additional Partitions Defined (00h)
SDP (0)
IDP
PSUM
Reserved
Medium Format Recognition (03h)
Reserved
Partition Units
Reserved
Partition Size (Partition 0)
(MSB)
Partition Size (Partition 1)
FDP (0)
0
(LSB)
(LSB)
Warning: This page is used to format a tape to one partition. Extreme care must be used with this parameter page to
avoid accidental reformatting of a tape. Reformatting will destroy all previous data.
Maximum Additional Partitions: This field is only valid on MODE SENSE where it is used to report the maximum
number of additional partitions that are supported by the drive. This field is non-changeable, however it accepts all
values as a don’t care. This number is the maximum number of additional partitions supported.
Additional Partitions Defined: This field specifies the number of additional partitions to be defined for the tape
based on the IDP bit. The maximum allowed is the value returned in the Maximum Additional Partitions field.
FDP: The Fixed Data Partitions bit is not supported by the drive and if set, a CHECK CONDITION status is returned
with an ILLEGAL REQUEST Sense Key set.
SDP: The Select Data Partitions bit is not supported by the drive and if set, a CHECK CONDITION status is returned
with an ILLEGAL REQUEST Sense Key set.
IDP: The Initiator Defined Partitions bit is supported and, when set to one, indicates that the tape shall be partitioned
based on the Additional Partitions Defined field, PSUM and Partition Size field.
PSUM: The Partition Size Unit of Measured field defines the units in which the Partition Size value selects the
partition size.
Table 6-44: PSUM values
Code
00b
01b
10b
11b
Description
bytes (unit of one)
kilobytes (103 bytes)
Megabytes (106 bytes)
10 (PARTITION UNITS) bytes
Support
Not Support
Not Support
Optional
Optional
Partition Units: This field defines the size of the partition size descriptors when the PSUM field is set to 11b. A value
of n in the PARTITION UNITS field shall define the units of the partition size descriptors as 10n bytes.
SDX-800V Supports following combinations.
PSUM Partition Units
10b
0000b: megabyte (AIT-1/2 Mode, AIT-E Turbo, AIT-1 Turbo)
11b
0111b: 107 byte (AIT-3 Mode, AIT-2 Turbo)
11b
1001b: 109 byte (AIT-3Ex Mode)
If another value is set these fields a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key
set.
6-46
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
Medium Format Recognition: This field is only valid on a MODE SENSE and is set to 03h to indicate that the drive
is capable of format and partition recognition. This is non-changeable field. It accepts all the value, however always
returns 03.
Partition Sizes: This field allows the initiator to allocate the capacity of each partition. It will also allow the initiator to
reallocate the capacity of previously partitioned tapes.
If the Additional Partitions Defined fields are set to ZERO the drive will reformat the tape.
The size of partition 0 is only valid during Mode Sense and is ignored during Mode Select. For Mode Select only
partition 1 size is used when Additional Partitions Defined field is set to 01h. Partition 0 size is ignored. Internally, the
drive computes partition 0 size to be the remaining capacity of the tape. This remaining capacity is the maximum
uncompressed capacity minus partition 1 size.
A second way to issue Mode Select Page 11h is to set Page Length to 08h, and set bytes 8 and 9 to partition 1 size.
In this method partition 0 size is not sent, but this size is still computed as defined above. In either case, Mode Sense
will report partition 0 and partition 1 sizes.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-47
6.Command Specification
MODE SELECT
6.7.6. Informational Exceptions Control Page (1Ch)
The Informational Exceptions control page defines the methods used by the target to control the reporting and the
operations of specific informational exception conditions.
Table 6-45 : Informational Exceptions Control Page
Bit
Byte
0
1
2
3
4
7
8
11
7
6
PS(0)
Reserved
Perf(0)
5
4
Reserved (0)
Reserved
(MSB)
(MSB)
3
2
Page Code (1Ch)
Page Length (0Ah)
DExcpt
Test
Interval Timer
(00 00 00 00h)
Report Count/Test Flag Number
1
0
Reserved LogErr (0)
MRIE
(LSB)
(LSB)
LogErr: This field is not supported.
DE xcpt: The Disable Exception Control (DE xcpt ) bit of ZERO indicates information operations shall be enabled.
The reporting of information exception conditions when the Dexcpt bit is set to ZERO is determined from the method
of reporting informational exception field. The Dexcpt bit of ONE indicates the drive shall be disable all information
exception operations. The method of reporting informational exceptions field is ignored when Dexcpt is set to ONE.
Test: The Test bit of ZERO indicates the drive shall not generate any test/false informational exception condition.
This bit of ONE indicates the drive shall generate test/false informational exception conditions. The default value of
Test is ZERO.
Perf: The Performance bit ( Per ) of ZERO indicates that informational exception operations that are the cause of
delays are acceptable. The Perf bit of ONE indicates the drive shall be set to ZERO otherwise a CHECK
CONDITION with an ILLEGAL REQUEST sense key set.
MRIE: The Method of Reporting Informational Exceptions field (MRIE) indicates the method used by the drive to
report informational exception conditions. If the informational exception condition was generated by an event that
caused a real CHECK CONDITION to occur, then this real CHECK CONDITION will over-ride the CHECK
CONDITION defined in MRIE modes. The drive supports value 0, 3 and 4.
When MRIE is set to 0, this method instructs the drive to not report informational exception conditions. When MRIE
is set to 4 (Unconditionally generate RECOVERED ERROR), this method instructs the drive to report informational
exception conditions by returning a CHECK CONDITION status on the next SCSI command (excluding INQUIRY,
REQUEST SENSE and REPORT LUNS) after an informational exception condition was detected. The sense key
shall be set to RECOVERED ERROR and the additional sense code shall indicate the cause of the information
exception condition (which is 5D/00h). The command that has the CHECK CONDITION shall complete without error
before any exception condition may be reported (and thus does not need to be reported).
Interval Timer: This field is not supported by the drive and if set a CHECK CONDITION status is returned with an
ILLEGAL REQUEST sense key set.
Report Count /Test Flag Number: This field has a dual purpose. When Test bit is set to ZERO, the value of this
field in the MODE SELECT data represents the Report Count. When a MODE SELECT command is sent with the
Test bit it set to ONE, the value of this field in the MODE SELECT data represents the Test Flag Number, which is
never returned in response to a MODE SENSE command. Valid values of Test Number are –64 to 64 and 32767
(7FFFh). Negative numbers are represented using the 2’s complement method. If the Test Flag Number is set to an
invalid value, the MODE SELECT command will return CHECK CONDITION, with sense key set to ILLEGAL
REQUEST and extended sense set to Invalid Field in Parameter list.
6-48
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
6.7.7. AIT Device Configuration Page (31h)
Note 1: The values set by Mode Select Page 31h become valid after the Mode Select Page 11h command is
completed.
Note 2: The values reported by Mode Sense Page 31h always indicate a status of the cassette. It is not a mode
condition of the drive
Note 3: For initializing AIT native mode cassette, Mode Select Page 31h must be issued before Mode Select Page
11h.
Table 6-46: AIT Device Configuration Page (31h)
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
Reserved
AIT
DEVICE
MIC
WORM
ABS (1)
4
3
2
1
Page Code (31h)
Page Length (8)
ULPBOT PRTH (0) PONEJ (0)
SPAN (0Ah)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0
SysLogAlive
WORM Capable
AIT
The AIT-bit is a changeable bit. The status of the AIT-bit is valid after a cassette is initialized. Until then the AIT-bit
indicates ZERO, even if the bit is set with the Mode Select command.
0 - DDS emulation mode
1 - AIT native mode
Device
0 - Do not create optional device area. (DDS mode only)
1 - Create optional device area. (AIT mode only)
ABS
0 - Do not create the Absolute Volume Map information. (Not Supported)
1 - Create and maintain the Absolute Volume Map information.
ULPBOT
0 - Load/unload is performed at the Optional Device Area, except for partition 0 (Not Supported).
1 - Load/ unload must be performed at the device area located at PBOT, even if there is an Optional Device Area. (default)
PRTH
0 - Allow Thread; Thread the tape after cartridge insertion, and return ready status. (default)
1 - Prevent Thread; Do not thread the tape after cartridge insertion, and return ready status immediately after the
cartridge is loaded. The tape will automatically be threaded when a media access SCSI command (Erase, Locate,
Mode Select Page 11h, Read, Read Position, Seek Block, Space, Write, and Write File-mark) is received from the
host. (Not Supported)
WORM
0 - Normal Data cartridge
1 - WORM cartridge
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-49
6.Command Specification
MODE SELECT
PONEJ
This bit is recorded in drive’s EEPROM, and it effects the drive itself. (Not Supported)
0 - Power On immediate Eject disable. If this bit set to 0, then the cassette will stay in the drive when power is
applied. (default)
1 - Power On immediate Eject enable. If this bit set to 1, then cassette will be immediately ejected when power is
applied to the drive.
Span
The Span field is in binary notation. This field is unchangeable. When MIC cartridge is inserted, this field is set to 0Ah
(00001010B), other values are prohibited.
SysLogAlive
0 0 - System logs located only on tape. (default for SDX-T3N)
1 1 - System logs located only in MIC. (default for MIC cartridge)
The SysLogAlive-bits shall be set to 00B for non-MIC cartridges, and to 11B for MIC cartridges. Other bit
combinations are prohibited.
MIC
This bit is effective for Mode Sense only. If this bit is 0 then MIC has not been detected in the cassette.
Bit Combination Table
6-50
AIT
DEV
0
0
1
1
0
1
0
1
Description
Illegal
Illegal
Illegal
AIT Mode, Unload at PBOT
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
6.7.8. Append Partition (32h) (This mode page is NOT
supported)
The Append Partition Command is available in the AIT mode. The Append Partition Command takes effect if the
current partition is the last partition. When the command is issued in the last partition and then creates a new
partition. If the command is issued in any other partition, SDX-800V will return the CHECK CONDITION status
(83h/97h Current Partition is no the last partition).
Table 6-47: Append Partition Page
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
Reserved
Reserved
Reserved
(MSB)
4
3
2
1
0
Page Code (32h)
Page Length (8)
Reserved
Reserved
PSUM
Reserved
Reserved
Partition units
Reserved
Partition Size Descriptor
(LSB)
PSUM
The Partition Size Unit of Measured field defines the units in which the Partition Size value selects the partition size.
Code
00b
01b
10b
11b
Description
bytes (unit of one)
kilobytes (103 bytes)
Megabytes (106 bytes)
10 (PARTITION UNITS) bytes
Support
Not Support
Not Support
Optional
Optional
Partition units
This field defines the size of the partition size descriptors when the PSUM field is set to 11b. A value of n in the
PARTITION UNITS field shall define the units of the partition size descriptors as 10n bytes.
SDX-800V Supports following combinations.
PSUM
Partition Units
11b
1001b : 109 byte (AIT-3Ex Mode)
If another value is set these fields a CHECK CONDITION status is returned with an ILLEGAL REQUEST sense key
set.
Partition Size Descriptor
Partition size in megabytes, in binary notation. Bytes 8, 9: Partition Size Descriptor. For a Mode Sense Command,
the value in this field is invalid unless the Mode Sense Command follows a successful Mode Select Command Page
32. Therefore, on power-up without a Mode Select Page 32h, the Current Page 32h Partition Size Descriptor should
be set to the default value of 00 00. There is no relation between this field and the IDP bit in the parameter block of
Mode Select Page 11h.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-51
6.Command Specification
MODE SELECT
Append Partition example procedure:
Start
⇓
Mode Sense Page 11h
⇓
Can I create one more new
partition?
⇓
Log Sense
(Page 3Dh; PC 0016h)
⇓
Go to the Last Partition
⇓
Mode Select Page 32h
⇓
Done
Check Max Additional Partitions
IF (Max Additional Partitions) ≥ 1
THEN you can create a new partition.
Yes
Get Last Partition Number
Change Partition.
Append partition.
Note 1: The partition to be appended inherits the conditions previously set by the Mode Select Page 31h.
Note 2: Example 1:
If the entire tape capacity is 200Gbyte.
This example does not contains formatting overhead. AIT mode tape with two partitions. P0 = 20 GB, P1
= 230 G. P1 contains 40 GB of old data. Mode Select Page 32h Append Partition Page indicates 5 GB for
the partition size. After the Mode Select command returns Good status we have the following:
P0 = 20 GB
P1 = 40 GB(old data), + 10G of Append space = 50G
P2 = 230 GB – 50G = 180G
After this command completes Unit Attention condition will be set for other Initiators, with ASC/ASCQ set
to 2A01, Mode Parameters changed. After this command Mode Sense page 11h will show the following:
Additional Partition = 2
P0 = 20 GB
P1 = 50 GB
P2 = 230 GB – 50 GB = 180 GB
Note 3: After partition appended, the Last Partition Number field of Volume Information in MIC indicates a valid
value, while the value in the Last Partition Number field of Volume Information on tape is not valid.
Note 4: The Append Partition Page operation is not allowed when the WP tab is set.
Note 5: Append Partition Page writes all buffered data to tape, before appending a partition.
6-52
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
6.7.9. Delete Partition (33h) (This mode page is NOT
supported)
Table 6-48: Delete Partition Page
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
Reserved
4
3
2
1
0
Page Code (33h)
Page Length (8)
Indicated Partition Number
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SDX-800V rewinds the tape to Bottom of Active Partition, after Delete Partition.
Note 1: The Delete Partition Command is available in the AIT mode and only for an AIT mode cassette.
Note 2: The Indicated Partition Number value specifies the partition number above which partitions are to be
deleted. Consequently, the value cannot represent the last, open-ended partition on tape. The specified
partition itself is converted into an open-ended partition with its data contents preserved.
Note 3: Delete Partition is System area in the Active partition.
Examples:
Case 1;
With the tape already loaded, and with partition 5 active, the Delete Partition command issued with the Indicated
partition Number set to 5 (the last partition) will be rejected with CHECK CONDITION (Illegal parameter). See Notes
2 and 3.
Indicated Partition Number
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Partition 5
Active Partition
Case 2;
With the tape already loaded, and with partition 4 active, the Delete Partition command issued with the Indicated
Partition Number set to 4 will delete partition 5. SDX-800V will change the value of 5 in the Last Partition Number
field in the Volume Information in MIC to 4. No tape motion will take place. The new last partition - partition 4 - will
become open-ended, spanning up to the EOM.
After the completion of this command, the Unit Attention condition will be set for other Initiators, with ASC/ASCQ set
to 2A01, Mode Parameters changed, and Mode Sense Page 11h will show the following:
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-53
6.Command Specification
MODE SELECT
Old tape layout:
Indicated Partition Number
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Partition 5
Active Partition
New tape layout:
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Active Partition
Case 3;
With the tape already loaded, and with partition 0 active, the Delete Partition command issued with the Indicated
Partition Number set to 0 will delete partitions 1, 2, 3, 4, and 5. SDX-800V will change the value of 5 in the Last
Partition Number field in the Volume Information in MIC to 0. No tape motion will take place.
After the completion of this command, the Unit Attention condition will be set for other Initiators, with ASC/ASCQ set
to 2A01, Mode Parameters changed, and Mode Sense Page 11h will show the following:
Old tape layout:
Indicated Partition Number
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Partition 5
Active Partition
New tape layout:
Partition 0
Active Partition
6-54
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SELECT
6.Command Specification
Case 4;
With the tape already loaded, and with partition 1 active, the Delete Partition command issued with the Indicated
Partition Number set to 3 will delete partitions 4 and 5. SDX-800V will change the value of 5 in the Last Partition
Number field in the Volume Information in MIC to 3. No tape motion will take place.
Old tape layout:
Indicated Partition Number
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Partition 5
Active Partition
New tape layout:
Partition 0
Partition 1
Partition 2
Partition 3
Active Partition
Case 5 (with PRTH=0);
With the tape already loaded, and with partition 3 active, the Delete Partition command issued with the Indicated
Partition Number set to 1 will be rejected with CHECK CONDITION. See Note 2.
Indicated Partition Number
Partition 0
Partition 1
Partition 2
Partition 3
Partition 4
Partition 5
Active Partition
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-55
6.Command Specification
MODE SENSE
6.8. MODE SENSE (6/10) 1Ah and 5Ah
Table 6-49: Mode Sense (6) CDB Format
7
0
1
2
3
4
5
6
5
4
3
2
Operation Code (1Ah)
DBD
Page Code
Reserved
Allocation Length
Reserved
NACA (0)
Reserved
PCF
Vendor Specific (00b)
1
0
Reserved
Flag (0)
Link (0)
1
0
Table 6-50: Mode Sense (10) CDB Format
7
0
1
2
3-6
7-8
5
6
5
4
3
2
Operation Code (5Ah)
LLBAA (0)
DBD
Page Code
Reserved
Allocation Length
Reserved
NACA (0)
Reserved
PCF
Vendor Specific (00b)
Reserved
Flag (0)
Link (0)
The MODE SENSE (6/10) commands provide a means to report its default, current and changeable configuration
parameters. They are complementary to MODE SELECT (6/10) commands. The 6-byte and 10-byte commands can
be interchanged.
The format of the data returned is different for the six and ten byte commands. See the MODE SELECT (6/10)
commands for the mode header format differences.
LLBAA: The LLBAA function is not supported. This field must be ZERO. This field is defined for MODE SENSE 10
only.
If this field is not set to 0b for a MODE SENSE (10) command, the command terminates with CHECK CONDITION
status, the sense key set to ILLEGAL REQUEST, the ASC/ASCQ is set to INVALID FIELD IN CDB.
DBD: A Disable Block Descriptors (DBD) bit of ZERO indicates that the target may return ZERO or more block
descriptors in the returned MODE SENSE data at the target's discretion. A DBD bit of one specifies that the target
shall not return any block descriptors in the returned MODE SENSE data.
PC: The Page Control field indicates the type of page parameter values to be returned to the Host as shown below.
Table 6-51: Page Control field values
Bit 7
0
Bit 6
0
Parameter Values
Current Values
0
1
Changeable Values
1
1
0
1
Default Values
Saved Values
Description
This is the normal default situation where the drive returns to the host
its current configuration. Page fields not supported are set to ZERO by
the drive.
These are any values which a host may alter in a subsequent MODE
SELECT command. Any field that the drive allows to be changed is set
to one. Otherwise the field is set to ZERO.
These are the default values on power-up
Not supported by the drive
The addition page length field of each page returned by the drive indicates the number of bytes supported for that
page. Fields not supported by the drive are set to ZERO.
Page Code: This allows the Host to select any specific or all pages supported by the drive. The page codes that are
supported are:
6-56
SONY AIT-3Ex drive SDX-800V series Ver.1.1
MODE SENSE
6.Command Specification
Table 6-52: Supported MODE SENSE Page Codes
Page Code
00h
02h
0Ah
0Fh
10h
11h
1Ch
31h
32h
33h
3Fh
Description
Standard Sense
Disconnect-Reconnect
Control Mode Page
Data Compression Control
Device Configuration
Medium Partitions Parameter
Informational Exception Control
AIT Device Configuration
Append Partition (Not Support)
Delete Partition (Not Support)
Return All Pages
If the Host selects any other values, the drive will terminate the command with a CHECK CONDITION status and an
ILLEGAL REQUEST sense key set.
Note: If the Page Code is ZERO, the drive will only return the four-byte header and the one eight-byte block
descriptor and terminate the command with GOOD status.
Allocation Length: The Allocation Length specifies the number of bytes that the HOST has allocated for returned
MODE SENSE data. An Allocation Length of ZERO means that the drive will return no MODE SENSE data. This is
not considered an error and GOOD status will be returned. Any other value indicates the maximum number of bytes
that can be transferred. The drive terminates the DATA IN phase when the Allocation Length bytes have been
transferred or when all available MODE SENSE data has been transferred to the initiator, whichever is less. The
Allocation Length must fall on header or block descriptor boundaries. If the Allocation Length does not fall on these
boundaries then the drive returns CHECK CONDITION status with the ILLEGAL REQUEST sense key set, unless
the value is greater than that required for the specified page.
If the Page Code is ZERO, the Host requires MODE SENSE to only return the four-byte header the one eight-byte
block descriptor, therefore the Allocation Length must be set to 0Ch. The value of the Page Control Field is then not
checked by the drive and may be set to any value.
If the Allocation Length is non ZERO, it must be set to 4 or more. If the Allocation length is non ZERO and less than
4, the drive will return CHECK CONDITION status, and ILLEGAL REQUEST sense key.
The MODE SENSE data contains a four-byte header, followed by one eight-byte block descriptor, followed by ZERO
or more variable length pages, depending on the Page Code and the Allocation Length.
Table 6-53: MODE SENSE data
Bit
Byte
0
1
2
3
5
6
7
8
9
10
11
7
WP
6
5
4
3
Mode Data Length
Medium Type (00h)
Buffered Mode (001b)
Block Descriptor Length (08h)
2
1
0
Speed (00h)
(MSB)
Number of Blocks (00 00 00h)
(LSB)
Reserved
(MSB)
Block Length
(LSB)
Mode Data Length: The mode data length specifies the length in bytes of the following mode sense data that is
available to be transferred during the DATA IN phase. The mode data length does not include itself but does include
the total length of all requested MODE SENSE pages.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-57
6.Command Specification
MODE SENSE
Media Type: The media value will be ZERO as only one media type is supported.
WP: A Write Protected bit of ZERO indicates that the tape is write enabled. A Write Protected bit of one indicates that
the tape is write protected.
Buffered Mode: if this bit is set to ZERO, the drive will not report a GOOD status on WRITE commands until the data
blocks are actually written on the tape. If set, the drive is in buffered mode and may report a GOOD status on WRITE
commands as soon as the data block has been transferred to the drive’s buffer. One or more blocks may be buffered
prior to writing to the tape. (Not support)
If the Buffered Mode field is ONE, then drive reports GOOD status on WRITE commands as soon as the data block
has been transferred to the buffer, this field should be set to ONE.
Speed Field: will return ZERO as the drive only supports one speed.
Block Descriptor Length: returns a value of 8, which specifies the length in bytes of the following Block Descriptor.
The drive only returns a single Block Descriptor.
Density Code: The drive returns 30h, 31h, 32h, and 3Bh in the Density Code field.
Number of Blocks: The Number of Blocks field is ZERO, indicating that an unspecified (or unknown) number of the
remaining logical blocks on the tape may have the media characteristics specified by the Block Descriptor.
Block Length: The Block Length field specifies the length in bytes of each logical block transferred over the SCSI
bus. A Block Length of ZERO indicates that the length is variable. Any other value indicates the number of bytes per
block that the drive must handshake over the bus. This establishes Block Length such that the Transfer Length for
read, write command will be a block count not a byte count. Minimum Block Length is 2. If Block Length is 1, the
drive will return the CHECK CONDITION status with an ILLEGAL REQUEST sense key.
Note: It is value of this field together with the Fixed Bit Field in the READ, or WRITE commands that determine
whether the drive is in Fixed or Variable block mode. The minimum length is 4 and it always should be a multiple of
4.
Page Descriptor: The supported pages are fully documented in the MODE SELECT clause of this Chapter.
PS: When the Page Savable bit is set, this indicates that the page contains saved parameters. This bit will never be
set as there is no non-volatile RAM on the drive into which parameter data may be saved.
All fields not supported by the drive must be set to ZEROs.
6.8.1. Mode Sense 31h (AIT Device Configuration Page)
Note 1: SDX-800V always reports the status of the cassette present in the drive, even if the mode values are
changed.
Note 2: AIT-bit and DEV-bit values are changed after completing the Mode Select Page 11h.
Note 3: SDX-800V reports the following status for a virgin cassette:
Bits
AIT
DEV
ULPBOT
PRTH
PONEJ
ABS
MIC
SysLogAlive
6-58
SDX-T3N
0
0
1
0
0
0
0
00B
MIC Cartridge
0
0
1
0
0
1
1
11B
SONY AIT-3Ex drive SDX-800V series Ver.1.1
PERSISTENT RESERVE IN
6.Command Specification
6.9. PERSISTENT RESERVE IN 5Eh
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
4
3
Operation Code (5Eh)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Allocation Length
Logical Unit Number
(MSB)
Unused (00b)
2
1
0
SERVICE ACTION
Reserved
Flag
(LSB)
Link
The PERSISTENT RESERV IN command is used to obtain about persistent reservations and reservation keys that
are active within a drive.
The actual length of the PERSISTENT RESERVE IN parameter data is available in a parameter data field.
SERVICE ACTION: The service action codes are defined:
Table 6-54: PERSISTENT RESERVATION IN Service action codes
Code
00h
01h
02h-1fh
Name
Description
Reads all registered Reservation Keys
Reads the current persistent reservations
Reserved
READ KEYS
READ RESERVATION
Reserved
READ KEYS – The READ KEYS service action that the drive return a parameter list containing a header and a list of
each current registered initiator’s reservation key. If multiple initiators have registered with the same key, then that
key value shall be listed multiple times, once for each such registration.
READ RESERVATIONS – The READ RESERVATIONS service action requests that the drive return a parameter
list containing a header and the persistent reservation(s), if any, that is present in the drive. Multiple persistent
reservations may be returned only if element reservations are present.
Allocation Length: The Allocation Length field indicates how much space has been reserved for the returned
parameter list. If length is not sufficient to contain the entire parameter list, the first portion of the list shall be
returned. This shall not be considered an error. If the remainder of the list is required, the application client should
send a new PERSISTENT RESERV IN command with a Allocation Length field large enough to contain the entire
list.
The returned the parameter data provided in response to a PERSISTENT RESERVE IN command with the READ
KEYS service action has the following format:
Table 6-55: PERSISTENT RESERVATION IN parameter data for READ KEYS
Bit
Byte
0
3
4
7
8
15
n-7
n
7
6
5
4
3
(MSB)
GENERATION
(MSB)
Additional Length
(MSB)
Reservation Key list
First reservation key
(MSB)
Last reservation key
2
1
0
(LSB)
(LSB)
(LSB)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
(LSB)
6-59
6.Command Specification
PERSISTENT RESERVE IN
GENERATION: This field shall contain a 32-bit counter maintained by the drive that shall be incremented every time
a PERSISTENT RESERVE OUT command requests a REGISTER, a CLEAR, a PREEMPT, or a PREEMPT AND
ABORT service action. The counter shall not be incremented by a PERSISTENT RESERVE IN command, by a
PERSISTENT RESERVE OUT command that performs a RESERVE or RELEASE service action, or by a
PERSISTENT RESERVE OUT command that is not performed due to an error or reservation conflict. The
generation value shall be set to 0 as part of the power on reset process.
Additional Length: This filed contains a counter of the number of bytes in the Reservation key list. If the allocation
length specified by the PERSISTENT RESERVE IN command is not sufficient to contain the entire parameter list,
then only the bytes from 0 to the maximum allowed allocation length shall be sent to the application client. The
incremental remaining bytes shall be truncated, although the Additional Length field shall still contain the actual
number of bytes in the reservation key list without consideration of any truncation resulting from an insufficient
allocation length. This shall not be considered an error.
Reservation Key: The reservation key list contains the 8-byte reservation keys for all initiators that have registered
through all ports with drive.
The returned the parameter data provided in response to a PERSISTENT RESERVE IN command with the READ
RESERVATION service action has the following format:
Table 6-56: PERSISTENT RESERVATION IN parameter data for READ RESERVATION
Bit
Byte
0
3
4
7
8
23
7
6
5
4
3
(MSB)
GENERATION
(MSB)
Additional Length
2
1
0
(LSB)
(LSB)
(MSB)
Reservation descriptor
(LSB)
GENERATION: This field shall be defined for the PERSISTENT RESERVE IN READ KEYS parameter data.
Additional Length: This filed contains a counter of the number of bytes to follow in Reservation descriptor. If the
allocation length specified by the PERSISTENT RESERVE IN command is not sufficient to contain the entire
parameter list, then only the bytes from 0 to the maximum allowed allocation length shall be sent to the application
client. The incremental remaining bytes shall be truncated, although the Additional Length field shall still contain the
actual number of bytes of Reservation descriptor and shall not be affected by the truncation. This shall not be
considered an error.
Reservation descriptor: The format of this field is defined in table 6-57.
Table 6-57: PERSISTENT RESERVATION IN Reservation Descriptor
Bit
Byte
0
7
8
11
12
13
14
15
7
6
5
4
3
(MSB)
Reservation Key
(MSB)
SCOPE-SPECIFIC Address
(0 0 0 0)
Reserved
2
1
0
(LSB)
SCOPE
(LSB)
TYPE
Obsolete
The Reservation descriptor for each reservation shall contain the Reservation Key under which the persistent
reservation is held. The TYPE and SCOPE of each persistent reservation as present in the PERSISTENT
RESERVE OUT command that created the persistent reservation shall be returned.
SCOPE-SPECIFIC Address: The drive does not support an Element reservation. This field shall be set to zero.
6-60
SONY AIT-3Ex drive SDX-800V series Ver.1.1
PERSISTENT RESERVE IN
6.Command Specification
SCOPE: The value in this field indicates whether a persistent reservation applies to an entire logical unit to an
element. The value in this filed are defined in table 6-58.
Table 6-58: PERSISTENT RESERVATION SCOPE Codes
Code
0h
1h
2h
3h-fh
Name
Logical Unit
Element (not supported in this drive)
Reserved
Description
Persistent reservation applies to the full logical unit
Obsolete
Persistent reservation applies to the specified element
Reserved
Logical Unit: A SCOPE value of Logical Unit indicates that the persistent reservation applies to the entire logical
unit. The Logical Unit scope shall be implemented by all device servers that implement PERSISTENT RESERVE
OUT.
Element: A SCOPE filed value of Element indicates that the persistent reservation applies to the element of the
logical unit defined by the SCOPE-SPECIFIC Address field in the PERSISTENT RESERVE OUT parameter list.
The drive do not support it.
TYPE: The value in the TYPE filed specify the characteristics of the persistent reservation being established for all
data blocks within the element or within the logical unit. Table 6-59 defines the characteristic of the different type
values. For each persistent reservation type, table 6-59 lists code value and describes the required device server
support. In this table, the description of required device server support is divided in two paragraphs. The first
paragraph defines the required handling for read operations. The second paragraph defines the required handling
for write operations.
Table 6-59: PERSISTENT RESERVATION TYPE Codes
Code
0h
1h
2h
3h
4h
5h
6h
7h-Fh
Name
Write
Exclusive
Exclusive
Access
Write
ExclusiveRegistrants
Only
Exclusive
AccessRegistrants
Only (not
supported in
this drive)
Reserved
Description
Obsolete
Reads Shared: Any application client on any initiator may execute tasks that request
transfers from the storage medium or cache of the logical unit to the initiator.
Writes Exclusive: Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage medium
or cache of the logical unit shall result in a reservation conflict.
Obsolete
Reads Exclusive: Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the storage medium or cache of
the logical unit shall result in a reservation conflict.
Write Exclusive: Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage medium
or cache of the logical unit shall result in a reservation conflict.
Obsolete
Reads Shared: Any application client on any initiator may execute tasks that request
transfers from the storage medium or cache of the logical unit to the initiator.
Writes Exclusive: Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage medium
or cache of the logical unit shall result in a reservation conflict.
Reads Exclusive: A task that requests a transfer from the storage medium or cache
of the logical unit to an initiator that has not previously requested a REGISTER
service action with the drive shall result in a reservation conflict.
Write Exclusive: Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage medium
or cache of the logical unit shall result in a reservation conflict.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-61
6.Command Specification
PERSISTENT RESERVE OUT
6.10. PERSISTENT RESERVE OUT 5Fh
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
4
3
2
1
0
Operation Code (5Fh)
Reserved
SCOPE
SERVICE ACTION
TYPE
Reserved
Reserved
Reserved
Reserved
Parameter List Length (18h)
(MSB)
Unused (00b)
Reserved
Flag
(LSB)
Link
The PERSISTENT RESERVE OUT command is used to request service actions that reserve a logical unit or
element for the exclusive or shared used if a particular initiator. The command uses other service actions to manage
and remove such reservations. The command shall be used in conjunction with the PERSISTENT RESERVE IN
command and shall not be used with the RESERVE and RELEASE commands.
Initiator performing PERSISTENT RESERVE OUT service actions are identified by a reservation key provided by
the application client. An application client may use the PERSISTENT RESERVE IN command to identify which
initiators are holding a persistent reservation and use the PERSISTENT RESERVE OUT command to preempt that
reservation if required.
If a PERSISTENT RESERVE OUT command is attempted, but there are insufficient drive resources to complete the
operation, the drive shall return a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST
and the additional sense data shall be set to INSUFFICIENT REGISTRATION RESOURCES.
The PERSISTENT RESERVE OUT command contains fields that specify a persistent reservation service action, the
intended scope of the persistent reservation, and the restrictions caused by the persistent reservation. The TYPE
and SCOPE fields are define in 6.9. If a SCOPE filed specifies a scope that is not implemented, the drive shall return
a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and additional sense data shall be
set to INVALID FIELD IN CDB.
Fields contained in the PERSISTENT RESERVE OUT parameter list specify the information required to perform a
particular persistent reservation service action.
The parameter list shall be 24 bytes in length and the Parameter List Length field shall contain 24(18h). If the
parameter list length is not 24, the drive shall return a CHECK CONDITION status. The sense key shall be set to
ILLGAL REQUEST and the additional sense data shall be set to PARAMETER LIST LENGTH ERROR.
SERVICE ACTION: When processing the PERSISTENT RESERVE OUT service actions, the drive shall increment
the generation value as specified in 6.9.
Table 6-60: PERSISTENT RESERVE OUT SERVICE ACTION codes
Code
00h
01h
Name
REGISTER
RESERVE
02h
03h
04h
05h
RELEASE
CLEAR
PREEMPT
PREEMPT &
ABORT
Reserved
06h-1Fh
Description
Register a reservation key with the drive
Create a persistent reservation having a specified SCOPE and TYPE. The
SCOPE and TYPE of a persistent reservation are defined in 6.9
Releases the selected reservation for the requesting initiator.
Clears all reservation keys and all persistent reservations.
Preempts persistent reservations from another initiator.
Preempts persistent reservations from another initiator and aborts the task set for
the preempted initiator.
The parameter list required to perform the PERSISTENT RESERVE OUT command has the following format:
6-62
SONY AIT-3Ex drive SDX-800V series Ver.1.1
PERSISTENT RESERVE OUT
6.Command Specification
Table 6-61: PERSISTENT RESERVE OUT parameter list
Bit
Byte
0
7
8
15
16
19
20
21
22
23
7
6
5
4
3
(MSB)
Reservation Key
(MSB)
SERVICE ACTION Reservation Key
(MSB)
SCOPE-SPECIFIC Address
(0 0 0 0)
Reserved
Reserved
Obsolete
2
1
0
(LSB)
(LSB)
(LSB)
APTPL
Reservation Key: This field contains an 8-byte value provided by the application client to the drive to identify the
initiator that is the source of the PERSISTENT RESERVE OUT command. The drive shall verify that the Reservation
Key field in a PERSISTENT RESERVE OUT command matches the registered reservation key for the initiator from
which the task was received, except for the REGISTER service action for an unregistered initiator which shall have a
reservation key value of zero. If a PERSISTENT RESERVE OUT command specifies a Reservation Key field other
than the reservation key registered for the initiator, the drive shall return a RESERVATION CONFLICT status. The
reservation key of the initiator shall be verified to be correct regardless of the SERVICE ACTION and SCOPE field
values.
SERVICE ACTION Reservation Key: This field contains information needed for three service actions; the
REGISTER, PREEMPT, and PREEMPT AND ABORT service actions. For the REGISTER service action, the
SERVICE ACTION Reservation Key field contains the new reservation key to be registered. For the PREEMPT and
PREEMPT AND ABORT service actions, the SERVICE ACTION Reservation Key field contains the reservation key
of the persistent reservations that are being preempted. The SERVICE ACTION Reservation Key field is ignored for
all other service actions.
SCOPE-SPECIFIC Address: The drive do not support an Element reservation, then this field shall be set to zero.
APTPL: The Activate Persistent Through Power Loss(APTPL) bit is not supported by the drive. If this bit is set a
CHECK CONDITION status is returned with an INVALID FIELD IN PARAMETER LIST.
The loss of power in the target shall release the persistent reservation for all logical units and remove all reservation
keys.
Table 6-62 summarizes which field are set by the application client and interpreted by the drive for each service
action and scope value.
Table 6-62: PERSISTENT RESERVE OUT service actions and valid parameters
Service
Action
REGISTER
RESERVE
RELEASE
CLEAR
PREEMPT
PREEMPT
& CLEAR
Allowed
Scope
ignored
Logical Unit
Logical Unit
Ignored
Logical Unit
Logical Unit
TYPE
Ignored
Valid
Valid
Ignored
Valid
Valid
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Parameters
SERVICE ACTION
RESERVATION KEY
Valid
Ignored
Ignored
Ignored
Valid
Valid
SCOPE- SPECIFIC
Address
Ignored
Ignored
Ignored
Ignored
Ignored
Ignored
6-63
6.Command Specification
PREVENT ALLOW MEDIUM REMOVAL
6.11. PREVENT ALLOW MEDIUM REMOVAL 1Eh
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
2
1
0
Operation Code (1Eh)
Obsolete
Reserved
Reserved
Reserved
Reserved
Control
Prevent
The PREVENT ALLOW MEDIUM REMOVAL command requests that the target enable or disable the removal of the
medium in the drive. This mechanism is independent of device reservations and the drive shall not allow medium
removal if any initiator currently has medium removal prevented.
The prevention of medium removal shall begin when any initiator issues a PREVENT ALLOW MEDIUM REMOVAL
command with a prevent bit of one (medium removal prevented). The prevention of medium removal for the logical
unit shall terminate:
1.
Upon a hard RESET condition.
2.
Upon the receipt of a BUS DEVICE RESET message from any initiator
3.
After all initiators that have medium removal prevented issue PREVENT ALLOW MEDIUM REMOVAL
commands with a prevent bit of ZERO, and the target has successfully performed a synchronize cache
operation.
While a prevention of medium removal condition is in effect the target shall inhibit mechanisms that normally allow
removal of the medium by an operator.
Prevent: When this bit is set, the drive will not eject the tape following an UNLOAD. When it receives the UNLOAD,
the drive writes any buffered data to tape, rewind, then unthreads the tape from the mechanism. The drive does not
eject the tape. Setting this bit also completely disables the Eject button on the front panel (except emergency eject).
This situation remains until the Prevent bit is set to ZERO.
When this bit is set to ZERO, the drive ejects the cassette following completion of an UNLOAD. The Eject button is
also re-enabled.
6-64
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ
6.Command Specification
6.12. READ 08h
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation Code (08h)
1
Obsolete
Reserved
SILI
Fixed
2
(MSB)
3
Transfer Length
4
(LSB)
5
Control
READ transfers one or more data blocks to the initiator starting with the next block on the drive.
Fixed: This bit specifies the meaning of the Transfer Length field and whether fixed-length or variable-length blocks
are to be transferred.
If the Fixed bit is set to ZERO, Variable Block mode is requested. A single block is transferred with the Transfer
Length specifying the maximum number of bytes the Host has allocated for the returned data.
If the Fixed bit is set to one, the Transfer Length specifies the number of blocks to be transferred to the Host. This is
valid only if the drive is currently operating in Fixed Block mode, in other words, when it has been instructed to use
fixed-length blocks with MODE SELECT command. If the Fixed bit is set and the drive is in Variable Block mode, the
READ is rejected with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set.
When the Transfer Length is ZERO, no data will be transferred and the current position on the logical unit will not be
changed.
A successful READ command with the Fixed bit set transfers (current Block Length) X (Transfer Length) bytes of
data to the Host. Upon termination of the READ command, the media will be logically positioned after the last block
transferred (EOM side).
SILI: A Suppress Incorrect Length Indicator bit of one indicates that the device will not return CHECK CONDITION
status if the only error is that the Transfer Length is not equal to the actual Block Length recorded on the media.
Note, however, that if the SILI bit is one and the Fixed bit is ZERO, then the device will report CHECK CONDITION,
if the requested Transfer Length is less than the actual block size recorded on the medium (over-length condition)
AND the device is configured to be in Fixed Block mode (i.e. the Block Length field in the MODE SELECT/SENSE
block descriptor is non-ZERO).
If the SILI bit is one and the Fixed bit is one, the drive will terminate the command with a CHECK CONDITION status
with the sense key set to ILLEGAL REQUEST and the additional sense code to ILLEGAL FIELD IN CDB. If the SILI
bit is not set and the actual Block Length is different from the specified transfer length, a CHECK CONDITION status
is returned. Within the Sense data, the Incorrect Length Indicator (ILI) bit and Valid bit will be set to one, the Sense
Key field is set to NO SENSE and the Information Bytes are to set the difference (residue) between the requested
Transfer Length and the actual Block Length, or in Fixed Block mode, the difference (residue) between the
requested number of blocks and the actual number of blocks read. No more than Transfer Length bytes are
transferred to the initiator and the tape is logically positioned after the last block transferred (EOM side).
If the drive reads a File-mark, the drive will return a CHECK CONDITION status. Within the Sense data, the
File-mark and Valid bits are set and the Sense Key field is set to NO SENSE. The information fields contain the
residue count. The Additional Sense Code and Additional Sense Code Qualifier fields are set to File-mark Detected.
Upon termination, the media will be logically positioned after the File-mark (EOM side).
If, however, the drive encounters a Save-Set Mark during a READ, nothing is reported unless the drive has been
configured through MODE SELECT to Report Save-Set Marks. The drive will ignore the Set-mark and continue the
READ. If the Report Save-Set Marks configuration is enabled then the File-mark and Valid bits are set and the
Sense Key field is set to NO SENSE. The information fields contain the residue count and the Additional Sense
Code and Additional Sense Code Qualifier fields are set to Set-mark Detected. The tape is logically positioned after
the Save-Set Mark (EOM side).
If the drive detects EOD during the READ, the drive will return a CHECK CONDITION status. Within the Sense data,
the Valid bit is set and the Sense Key field is set to BLANK CHECK. The information fields contain the residue count.
The Additional Sense Code and Additional Sense Code Qualifier fields are set to EOD DETECTED. Upon
termination, the media will be physically positioned before EOD and after the last block on tape.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-65
6.Command Specification
READ
The meaning of EOM is different for READ than for a WRITE type of command. EOM is only reported when the
physical EOM/P is encountered. The drive returns a CHECK CONDITION status. The EOM and Valid bits are set
and the Information fields contain the residue count. If EOD is not written after the physical EOM/P, the Sense Key
is set to MEDIUM ERROR and the Additional Sense Code and Additional Sense Code Qualifier fields are set to
EOM/P Detected. If EOD is written, the Sense Key is set to BLANK CHECK and the Additional Sense Code and
Additional Sense Code Qualifier fields are set to END-OF-DATA DETECTED. The tape is physically positioned at
EOM/P.
For a File-mark, a (reported) Save-Set Mark, EOD or EOM detected, if the Fixed bit is set, the Information field in the
REQUEST SENSE Data will be set to the difference (residue) between the requested Transfer Length and the actual
number of blocks read (not including the File-mark or Save-Set Mark). If the Fixed bit is set to ZERO, the information
bytes will be set the requested Transfer Length because File-marks and Save-Set Marks are considered to have a
byte count of ZERO, (though this does not cause the ILI bit to be set).
READ may return the following sense keys on a CHECK CONDITION:
NO SENSE: If the actual Block Length is different from the specified Transfer Length and the SILI bit is ZERO, the ILI
(Incorrect Length Indicator) bit and Valid bit are set to one. The Information bytes in extended sense are set to the
difference (residue) between the requested Transfer Length and the actual Block Length, or in Fixed Block mode,
the difference (residue) between the requested number of blocks and the actual number of blocks read (not including
the incorrect length block). No more than Transfer Length bytes are transferred to the initiator and the tape is
logically positioned after the block (EOM side).
If the drive reads a File-mark during this command, it sets the File-mark bit in the REQUEST SENSE data. Upon
termination, the tape is logically positioned after the File-mark (EOM side). If, however, the drive encounters a
Save-Set Mark during this command, nothing is reported unless the SDX-800V has been configured through
MODE SELECT to Report Save Set Marks. If the Report Save Set Marks configuration is enabled then the Valid bit
and the Additional Sense Key flags are set in the REQUEST SENSE data to indicate that a Save-Set Mark has been
encountered. The tape is also logically positioned after the Save-Set Mark (EOM side).
For both a File-mark and a reported Save-Set Mark, if the Fixed bit is one, the Information bytes in the REQUEST
SENSE data are set to the difference residue between the requested Transfer Length and the actual number of
blocks read (not including the File-mark or Save-Set Mark).
If the Fixed bit is set to ZERO, the Information bytes are set to the difference (residue) between the requested
Transfer Length and the actual number of bytes read. File-marks and Save-Set Marks are considered to have a byte
count of ZERO, though this does not cause the ILI bit to be set.
MEDIUM ERROR: The current block being read or a previously acknowledged WRITE type of operation
experienced an error probably related to the condition of the tape.
HARDWARE ERROR: Either a previously acknowledged WRITE type of operation had a major non-media related
failure or the read itself experienced the failure. The Valid bit is set, and the Information field contains the appropriate
residue. The meaning of EOM is different in a READ command from that in a WRITE type of command. EOM is only
reported on physical end-of-media. However, this condition is indistinguishable from other fatal servo errors and so
is reported as a HARDWARE ERROR.
BLANK CHECK: If EOD (End-of-Data) was encountered during a read, the sense key is BLANK CHECK, the Valid
bit is set and the Information bytes contain the residue count.
6-66
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ ATTRIBUTE
6.Command Specification
6.13. READ ATTRIBUTE 8Ch
The READ ATTRIBUTE command allows an application client to read attribute values from the Medium Auxiliary
memory (MAM).
Table 6-63: READ ATTRIBUTE command
Bit
Byte
7
6
5
0
4
3
Reserved (0)
0
Service Action
2
Reserved
3
Reserved
4
Reserved
5
Volume Number
6
Reserved
7
Partition Number
(MSB)
9
10
1
Operation Code (8Ch)
1
8
2
First Attribute ID
(LSB)
(MSB)
11
12
Allocation Length
13
(LSB)
14
Reserved
15
Control
If the medium auxiliary memory is not accessible because there is no medium present, the READ ATTRIBUTE
command shall be terminated with a CHECK CONDITION status. The sense key shall be set to NOT READY and
the additional sense code shall be set to MEDIUM NOT PRESENT.
If although medium is present, the Medium Auxiliary Memory is not accessible, the READ ATTRIBUTE command
shall be terminated with a CHECK CONDITION status. The sense key shall be set to MEDIUM ERROR and the
additional sense code shall be set to AUXILIARY MEMORY NOT ACCESSIBLE.
The service actions defined for the READ ATTRIBUTE command are shown in Table 6-63.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-67
6.Command Specification
READ ATTRIBUTE
Table 6-64: READ ATTRIBUTE service action codes
Code
Name
Description
00h
Attribute Values
Return attribute values.
01h
Attribute List
Returns a list of available attribute identifiers, identifiers
that are not in the nonexistent or unsupported state.
02h
Volume List
Return a list of known Volume Numbers.
03h
Partition List
Return a list of known Partition Numbers.
04h
Reserved for SMC-2
05h – 1Fh
Reserved
The VOLUME NUMBER specifies a volume within the Medium Auxiliary Memory. The number of volumes of the
MAM shall equal that of the attached multi-volume medium. If the medium only has a single volume, then its volume
number shall be zero.
The PARTITION NUMBER specifies a partition within a volume. The number of partitions of the MAM shall equal
that of the attached multi-partition medium. If the medium only has a single partition, then its partition number shall
be zero.
If the combination of VOLUME NUMBER and PARTITION NUMBER is not valid, the command shall be terminated
with CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST, and the additional sense data
shall be set to INVALID FIELD IN CDB.
The FIRST ATTRIBUTE IDENTIFIER field specifies the attribute identifier of the first attribute to be returned. If the
specified attribute identifier is in the unsupported or nonexistent state, the READ ATTRIBUTE shall be terminated
with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST, and the additional sense
data shall be set to INVALID FIELD IN CDB.
The ALLOCATION LENGTH field specifies how many bytes have been allocated of the first attribute to be returned.
If the length is not sufficient to contain the entire parameter list, the first portion of the list shall be returned. This shall
not be considered an error. If the remainder of the list is required, the application client should either send a new
READ ATRRIBUTE command with an ALLOCATION LENGTH field large enough to contain the entire parameter list
or use the FIRST ATTRIBUTE IDENTIFIER field to restrict the attributes returned.
The format of parameter data returned by the READ ATTRIBUTE command depends on the service action
specified.
6.13.1. ATTRIBUTE VALUES service action
The READ ATTRIBUTE command with ATTRIBUTE VALUES service action returns parameter data containing the
attributes specified by the PARTION NUMBER, VOLUME NUMBER, and FIRST ATTRIBUTE INDENTIFIER fields
in the CDB. The returned parameter data shall contain the requested attributes in ascending numerical order by
attribute identifier value and in the format shown in table 6-65.
6-68
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ ATTRIBUTE
6.Command Specification
Table 6-65:
Bit
Byte
0
7
6
5
4
3
2
1
0
(MSB)
AVAILABLE DATA (n-3)
3
(LSB)
4
..
ATTRIBUTE 0
x
..
m
ATTRIBUTE x
..
n
The AVAILABLE DATA field shall contain the number of bytes of attribute information in the parameter list. If the
parameter list is truncated as a result of insufficient allocation length, the contents of the AVAILABLE DATA field
shall not be altered.
6.13.2. ATTRIBUTE LIST service action
The READ ATTRIBUTE command with ATTRIBUTE LIST service action returns parameter data containing the
attribute identifiers for the attributes that are not in the unsupported state and not in the nonexistent state in the
specified partition and volume number. The contents of FIRST ATTRIBUTE IDENTIIER field in the CDB shall be
ignored. The returned parameter data shall contain the requested attribute identifiers in ascending numerical order
by attribute identifier value and the format shown in table 6-66.
Table 6-66: READ ATTRIBUTE with ATTRIBUTE LIST service action parameters list format.
Bit
Byte
0
7
6
5
4
3
2
1
0
(MSB)
AVAILABLE DATA (n-3)
3
(LSB)
4
(MSB)
ATTRIBUTE 0
5
(LSB)
…
n-1
(MSB)
n
ATTRIBUTE x
(LSB)
The AVAILABLE DATA field shall contain the number of bytes of attribute in the parameter list. If the parameter list is
truncated as a result of insufficient allocation length, the contents of the AVAILABLE DATA field shall not be altered.
An ATTRIBUTE IDENTIFIER field is returned for each attribute that is not in the unsupported state and not in the
nonexistent state in specified partition and volume number.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-69
6.Command Specification
READ ATTRIBUTE
6.13.3. PARTITION LIST service action
The READ ATTRIBUTE command with PARTITION LIST service action returns parameter data (table 6-67)
identifying the number of partitions supported in the specified volume number. The contents of PARTITION
NUMBER and FIRST ATTRIBUTE IDENTIFER fields in the CDB shall be ignored.
TABLE 6-67: READ ATTRIBUTE WITH VOLUME LIST SERVICE ACTION PARAMETER LIST FORMAT.
Bit
Byte
0
7
6
5
(MSB)
4
3
2
1
AVAILABLE DATA (2)
1
0
(LSB)
4
FIRST PARTITION NUMBER
5
NUMBER OF PARTITIONS AVAILABLE
The AVAIABLE DATA field shall contain two.
The FIRST PARTITION NUMBER field indicates the first partition available on the specified volume number.
Partition numbering should start at zero.
The NUMBER OF PARTITIONS AVAILABLE indicates the number of Partitions available on the specified VOLUME
NUMBER.
6.13.4. VOLUME LIST service action
The READ ATTRIBUTE command with VOLUME LIST service action returns parameter data (table 6-68) identifying
the supported number of volumes. The contents of VOLUME NUMBER, PARTITION NUMBER, and FIRST
ATTRIBUTE IDENTIFIER fields in the CDB shall be ignored.
Table 6-68: READ ATTRIBUTE with VOLUME LIST service action parameter list format.
Bit
Byte
0
7
6
5
(MSB)
4
3
2
AVAILABLE DATA (2h)
1
2
FIRST VOLUME NUMBER
3
NUMBER OF VOLUMES AVAILABLE
1
0
(LSB)
The AVAILABLE DATA field shall contain two.
The FIRST VOLUME NUMBER field indicates the first volume available. Volume numbering should start at zero.
The NUMBER OF VOLUMES AVAILABLE field indicates the number of volumes available.
6-70
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ BLOCK LIMITS
6.Command Specification
6.14. READ BLOCK LIMITS 05h
Bit
7
Byte
0
1
2
3
4
5
6
5
4
3
2
1
0
Operation Code (05h)
Obsolete
Reserved
Reserved
Reserved
Reserved
Control
The READ BLOCK LIMITS command tells the drive to return its limits for Block Length. The READ BLOCK LIMITS
data shown below will be sent during the DATA IN phase of the command. The command does not reflect the
currently selected block size, only the available limits. MODE SENSE returns the current block size. 2 bytes is the
minimum and 8 Mbytes - 1 byte is the maximum block size which the unit can support.
Table 6-69: READ BLOCK LIMITS Data
Bit
Byte
0
1
2
3
4
5
7
6
5
Reserved
4
3
2
1
0
Granularity(02h)
(MSB)
Maximum Block Length Limit (80 00 00h)
(LSB)
(MSB)
Minimum Block Length Limit (00 02h)
(LSB)
GRANULARITY: This field indicates the block size granularity of the Logical Unit and the recording format. For this
Logical Unit, the value is 2, indicating a granularity of 2**GRANULARITY.
The maximum block length limit and minimum block length limit field values are shown in Table 6-69.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-71
6.Command Specification
READ BUFFER
6.15. READ BUFFER 3Ch
Bit
7
6
5
4
3
2
1
0
Bite
0
1
2
3
4
5
6
7
8
9
Operation Code (3Ch)
Reserved
Buffer ID
Obsolete
Mode
(MSB)
Buffer Offset
(LSB)
(MSB)
Allocation Length
(LSB)
Control
READ BUFFER is used in conjunction with WRITE BUFFER as a diagnostic function for testing the data buffer and
the SCSI bus integrity of the drive. A REWIND command should be sent to the drive after WRITE/READ BUFFER
diagnostic testing to return to normal operation.
Note: This command may not be used to recover data that is buffered within the drive. If the drive receives a READ
BUFFER without having had a prior WRITE BUFFER command, only the four byte header will be returned. There is
no available data to return, as the drive writes any buffered data to tape prior to accepting either a READ BUFFER or
WRITE BUFFER for the first time.
Mode: The drive supports the following values within this field. If any other value is set, the drive will terminate the
command with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set.
Table 6-70: READ BUFFER Mode values
Mode
0000b
0010b
0011b
1010b
1011b
Description
Combined Header and Data
Data
Descriptor
Echo Buffer
Echo Buffer Descriptor
Combined Header and Data Mode-in this mode, the drive returns a four-byte header followed by the data bytes. The
drive terminates the DATA IN phase when Allocation Length bytes of header plus data have been transferred or
when the header and all available data have been transferred to the initiator, whichever is less. The four-byte READ
BUFFER header is followed by data bytes from the drive's data buffer.
Table 6-71: READ BUFFER Header
Bit
Byte
0
1
2
3
7
6
5
4
3
2
1
0
Reserved
(MSB)
Available Length
(LSB)
Available Length: specifies the total number of data bytes that are available in the target's data buffer. This number
is not reduced to reflect the Allocation Length nor is it reduced to reflect the actual number of bytes written using the
WRITE BUFFER command. Following the READ BUFFER header, the target will transfer data from its data buffer.
Data Mode - in this mode, the DATA IN phase contains buffer data only.
6-72
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ BUFFER
6.Command Specification
Descriptor Mode - In this mode, a maximum of four bytes of READ BUFFER descriptor information is returned. The
device server shall return the descriptor information for the buffer specified by the BUFFER ID field (see the
description of the buffer ID). If there is no buffer associated with the specified buffer ID, the device server shall return
all zeros in the READ BUFFER descriptor. The BUFFER OFFSET field is reserved in this mode. The allocation
length should be set to four or greater. The device server shall transfer the lesser of the allocation length or four
bytes of READ BUFFER descriptor.
Table 6-72: READ BUFFER Descriptor
Bit
Byte
0
1
2
3
7
6
5
4
3
2
1
0
Reserved
(MSB)
Buffer Capacity
(LSB)
Buffer ID: The supported values are:
Table 6-73:
Buffer ID
0
80
81
82
83
Description
Read Group Buffer
Read Group Buffer
Read Group Buffer
Read Group Buffer
Read Group Buffer
Offset
0
- 0x01000000
0
- 0x01000000
0x01000000 - 0x02000000
0x02000000 - 0x03000000
0x03000000 - 0x04000000
If an unsupported Buffer ID code is requested, the drive returns a CHECK CONDITION status with an ILLEGAL
REQUEST sense key set.
Buffer Offset: The Buffer Offset field contains the byte offset within the specified buffer from which data shall be
transferred from. The initiator should conform to the offset boundary requirements returned in the READ BUFFER
descriptor. If the target is unable to accept the specified buffer offset, it shall return CHECK CONDITION status, shall
set the Sense Key to ILLEGAL REQUEST, and set the Additional Sense Code to ILLEGAL FIELD IN CDB.
Allocation Length: The Allocation Length specifies the maximum number of bytes that the initiator has allocated for
returned data. An Allocation Length of ZERO indicates that no data will be transferred. Any other value indicates the
maximum number of bytes that will be transferred. The drive terminates the DATA IN phase when Allocation Length
bytes of data have been transferred or when all available data has been transferred to the initiator, whichever is less.
The Allocation Length must be greater than four (except in data only mode), else the drive will return a CHECK
CONDITION status with an ILLEGAL REQUEST sense key set.
Read Data from Echo Buffer: Domain Validation is an important feature introduced in Ultra160 SCSI. It provides a
mechanism for SCSI devices to perform at maximum possible operational data transfer speed. Domain validation
performs a quick test to help ensure an initiator and target can actually transfer data at negotiated speeds. Using
Echo Buffer option, the initiator can do a more extensive data transfer validation test. The initiator transmits the data
using the WRITE BUFFER command with the echo buffer option and requests it back using the READ BUFFER
command with echo buffer option.
Echo Buffer (1010b): In this mode the drive transfer data to the application client from the echo buffer. The echo
buffer shall transfer the same data as when the WRITE BUFFER command with the mode field set to echo buffer
was issued. The BUFFER ID and BUFFER OFFSET fields are ignored in this mode. The READ BUFFER command
shall return the same number of bytes of data as received in the prior echo buffer mode WRITE BUFFER command
from the same initiator.
The initiator may send a READ BUFFER command requesting the echo buffer descriptor prior to a WRITE BUFFER
command. If an echo buffer mode WRITE BUFFER command is successful then the initiator may send multiple
echo buffer mode READ BUFFER commands to read the echo buffer data multiple times.
Echo buffer descriptor (1011b): In this mode, a maximum of four bytes of READ BUFFER descriptor information is
returned. The drive will return the descriptor information for the echo buffer. The BUFFER OFFSET field is reserved
in this mode. The allocation length should be set to four or greater.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-73
6.Command Specification
READ BUFFER
Table 6-74: Echo Buffer descriptor
Byte
Bit
7
6
0
3
4
3
2
Reserved
1
2
5
1
0
EBOS (1)
Reserved
Reserved
(MSB)
BUFFER CAPACITY
(LSB)
The BUFFER CAPACITY field will return the size of the echo buffer in bytes aligned to a four-byte boundary. The
maximum echo buffer size is 4096 bytes. The drive will maintain separate echo buffer for each different initiator and
will ensure echo buffer data from each initiator is the same as that previously written by the same initiator.
6-74
SONY AIT-3Ex drive SDX-800V series Ver.1.1
READ POSITION
6.Command Specification
6.16. READ POSITION 34h
Bit
7
Byte
0
1
2
3
4
5
6
7
8
9
6
5
4
3
Operation Code (34h)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Control
Obsolete
2
1
0
TCLP
LONG
BT
The READ POSITION command reports the current position of the logical unit. No medium movement shall occur as
a result of the command. The position is given in two parts:
TCLP: The Total Current Logical Position (TCLP) bit of ONE indicates the drive shall return data specifying the
partition, file, and set number with the current logical position. The TCLP bit of ZERO indicates the drive shall return
data specifying the first and last block location with the number of bytes and blocks in buffer.
LONG: The Long Format (LONG) bit of ONE indicates the drive shall return 32 bytes of data. The LONG bit of ZERO
indicates the drive shall return 20 bytes of data.
The LONG bit and the TCLP bit shall be equal. If the LONG and TCLP bits are not equal, or if both the LONG and the
Block Address Type (BT) bits are ONE, the command is rejected with a CHECK CONDITION status and an
ILLEGAL REQUEST sense key set.
BT: The Block Address type (BT) bit controls the content of the short format data. The BT bit if one requests the drive
to return its current First Block Location shall include data block only. The BT bit of ZERO requests the drive to return
the First Block Location are a SCSI Logical Block Address (data blocks, File-marks and Save Set Marks are
counted.)
Table 6-75: READ POSITION Data Format, short form
Bit
Byte
0
1
2
3
4
7
8
11
12
13
15
16
19
7
6
BOP
EOP
5
4
3
Reserved
Partition Number
Reserved
Reserved
First Block Location
(MSB)
2
BPU
1
0
Reserved
(LSB)
(MSB)
Last Block Location
(MSB)
Reserved
Number of Blocks in Buffer
(LSB)
(LSB)
(MSB)
Number of Bytes in Buffer (00 00 00 00h)
(LSB)
BOP: A Beginning Of Partition (BOP) bit of one indicates that the logical unit is at the beginning-of-partition in the
current partition. A BOP bit of ZERO indicates that the current logical position is not at the beginning-of-partition.
EOP: An End Of Partition (EOP) bit of one indicates that the logical unit is positioned between early-warning and
end-of-partition in the current partition. An EOP bit of ZERO indicates that the current logical position is not between
early-warning and end-of-partition. Note that this bit is mutually exclusive with the BOP bit.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-75
6.Command Specification
READ POSITION
BPU: A Block Position Unknown (BPU) bit of one indicates that the First and Last Block Locations are not known or
cannot be obtained. A BPU bit of ZERO indicates that the First contains valid position information.
Partition Number: reports the current partition number for the current logical position.
First block location: indicates the Block Address associated with the current logical position. The value shall
indicate the Block Address of the next data block to be transferred between the initiator and the target if a READ or
WRITE command is issued. See BT field for description of Logical Block Address. Note that the Logical Block
Address at BOT/P is 0.
Last block location: indicates the Block Address associated with the next block to be transferred from the buffer to
the medium. The value shall indicate the Block Address of the next data block to be transferred between the buffer
and the medium. If the buffer does not contain a whole block of data or is empty, the value reported for the last block
location shall be equal to the value reported for the first block location.
Number of Blocks in Buffer: indicates the number of data blocks in the buffer of the logical unit that have not been
written to the medium.
Number of Bytes in Buffer: This field is not supported and is always set to ZERO.
Table 6-76: READ POSITION Data Format, long form
Bit
Byte
0
1
2
3
4
7
8
15
16
23
24
31
7
6
BOP
EOP
5
4
3
Reserved
(MSB)
MPU
Reserved
Reserved
Reserved
Partition Number
(MSB)
Block Number
2
BPU
1
0
Reserved
(LSB)
(LSB)
(MSB)
File Number
(MSB)
Set Number
(LSB)
(LSB)
The BOP, EOP, and Partition Number are as defined in the READ POSITION data returned when the TCLP bit is set
to 0.
BPU: The Block Position Unknown (BPU) bit of ONE indicates the partition number or block number are not know or
accurate reporting is not currently available. The BPU bit of ZERO indicates the partition number and block number
fields contain valid position information.
MPU: The Mark Position Unknown (MPU) bit of ONE indicates the file number and set number are not known or
accurate reporting is not currently available. The MPU bit of ZERO indicates the File number and Set number fields
contain valid position information.
Block Number: Block Number reports the number of logical blocks between beginning-of-partition and current
logical position. Set-marks and File-marks count as one logical block each.
File Number: File Number reports the number of file-marks between beginning-of -partition and the current logical
position.
Set Number: Set Number reports the number of set-marks between beginning –of-partition and the current logical
position
6-76
SONY AIT-3Ex drive SDX-800V series Ver.1.1
RECEIVE DIAGNOSTIC RESULTS
6.Command Specification
6.17. RECEIVE DIAGNOSTIC RESULTS 1Ch
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
2
1
0
Operation Code (1Ch)
Obsolete
Reserved
Reserved
Allocation Length
(MSB)
(LSB)
Control
RECEIVE DIAGNOSTIC RESULTS requests error analysis data be sent to the initiator after completion of a SEND
DIAGNOSTIC command.
Allocation Length: This field specifies the number of bytes that the initiator has allocated for returned diagnostic
data. An Allocation Length of ZERO means that no diagnostic data will be transferred. Any other value indicates the
maximum number of bytes that will be transferred.
If the SEND DIAGNOSTIC had the PF bit set, the drive returns four bytes of header data as will as eight bytes of the
diagnostic result. If the PF bit was not set, the drive returns only the eight bytes of the diagnostic result.
The drive terminates the DATA IN phase when Allocation Length bytes have been transferred or when all the
available diagnostic data (four or eight bytes depending on the PF bit) have been transferred to the initiator,
whichever, is less.
If the drive returns a CHECK CONDITION status with the HARDWARE ERROR Sense Key and an Additional Sense
Code of DIAGNOSTIC FAILURE set on completion of a SEND DIAGNOSTIC, then the Host should issue a
RECEIVE DIAGNOSTIC RESULTS command to receive the eight bytes of data indicating the actual failure and the
Most Suspect Unit (MSU).
If the Host issued a SEND DIAGNOSTIC with the PF bit set and a page Code of ZERO, the drive returns which
pages it supports in the following format:
Table 6-77: RECEIVE DIAGNOSTICS supported pages
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
2
1
0
Page Code (00h)
Reserved
Page Length (00 02h)
(MSB)
(LSB)
Supported Page Code (00h)
Supported Page Code (81h)
If the Host issued a SEND DIAGNOSTIC with the PF bit set and a Page Code of 81h, the drive returns the following
four bytes of page header, then five bytes of diagnostic results.
Table 6-78: RECEIVE DIAGNOSTICS page header
Bit
Byte
0
1
2
3
7
6
5
(MSB)
4
3
2
1
0
Page Code (81h)
Reserved
Page Length (00 05h)
(LSB)
The structure of the diagnostic results data is described below:
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-77
6.Command Specification
RECEIVE DIAGNOSTIC RESULTS
All error messages are of the same format. All fields within the error message may not be known or applicable and
are cleared to ZERO. A diagnostic result of all ZEROs is returned if the diagnostic completed successfully without
error.
Table 6-79: RECEIVE DIAGNOSTICS results data
Bit
Byte
0
1
2
3
4
7
6
Reset
Error
Time
Re-Sync
(0)
5
4
3
Reserved
2
1
0
Error Set
Error Code
Result A
Result B
Test Number
Reset error: This bit is set when an error occurs during power-on self-test.
Time Re-Sync: This bit indicates that the time stamp saved with the error log has no relation to that of the previous
entry. It is only set by the logging routine within the data buffer as an error is logged. This field is not supported.
Error set: Various set of error codes exist. The definition of the error is dependent upon when set is taken from as
follows:
0 - Runtime errors
1 - Drive mechanism diagnostic errors
2 - Drive electronics diagnostic errors
Error code: Error codes for each error set are defined in the Diagnostics clause.
Result A and B: The content of these bytes depends on the test being run. See the Diagnostics clause.
Test number: This is the test number to which the message applies (if a test fails within a sequence, the individual
test number will be returned).
6-78
SONY AIT-3Ex drive SDX-800V series Ver.1.1
RELEASE UNIT
6.Command Specification
6.18. RELEASE UNIT (6/10) 17h and 57h
Table 6-80: Release UNIT 6 CDB format
Bit
7
Byte
0
1
2
3
4
5
6
5
4
3
2
1
0
1
0
LongID
Obsolete
Operation Code (17h)
Reserved
Obsolete
Reserved
Reserved
Reserved
Control
Table 6-81:Release UNIT 10 CDB format
Bit
Byte
0
1
2
3
4
5
6
7-8
9
7
6
5
Reserved
4
3
2
Operation Code (57h)
3rdPty
Reserved
Obsolete
Third Party Device ID
Reserved
Reserved
Reserved
Parameter List Length
Control
RELEASE UNIT releases the drive if it was reserved by the requesting initiator using a RESERVE (6/10) command
and is still in the reserved state. See PERSISTENT RESERVE OUT/IN for an alternate reservation system. This
command cannot release a reservation generated by the PERSISTENT RESERVE OUT command.
Third party reservation management operations are only allowed using RESERVE (10) and RELEASE (10).
Logical Unit reservation management operations are allowed using RESERVE (6/10) and RELEASE (6/10).
3rdPty: The Third-Party release option for the RELEASE UNIT command allows an initiator to release a logical unit
that was previously reserved using the Third-Party reservation option.
If the 3rdPty bit is ZERO, then the Third-Party release option is not requested. If the 3rdPty bit is one, then the drive
is released, if the reservation was made using the Third-Party reservation option by the initiator that is requesting the
release and for the same SCSI device as specified in the Third-Party Device ID field.
Obsolete: The Obsolete fields must be set to ZERO.
If the value in any Obsolete field is not ZERO, the command is terminated with CHECK CONDITION status and the
Sense Key is set to ILLEGAL REQUEST. The Additional Sense Code is set to INVALID FIELD IN CDB.
3rd Party: Third Party Release allows an initiator to release a logical unit that was previously reserved for third party
operations.
If the value in this field is 0b, a Logical Unit release is not requested.
If 3rdPty = 1b, the Logical Unit releases the specified logical unit, but only if the initiator, 3rdPty bit, and Third Party
Device ID fields (in CDB or in Parameter List) are identical when compared to the values used in the RESERVE (10)
command that established the reservation.
Long ID: If the Long ID bit is set to 1b and the Parameter List Length is 8, the parameter list contains the eight bytes
of the device ID of the Third Party Device ID.
If the 3RDPTY bit is zero, the LONGID bit field is ignored.
This is required for Fiber Channel since each Device ID is at least three bytes long.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-79
6.Command Specification
RELEASE UNIT
Third Party Device ID: If the Third Party Device ID value that is connected with the reservation release is equal to or
smaller than 255, the LongID field may be 0b and the Third Party Device ID value is sent in this field.
The contents of the Third Party Device ID field in the CDB is ignored when LongID = 1b;
Note: If the Third Party Device ID value is greater than 255 (FFh), LongID must be set to 1b.
Parameter List Length: The contents of this field specify the length, in bytes, of the parameter list that will be
transferred from the initiator to the Logical Unit.
If the 3RDPTY bit is zero, the PARAMETER LIST LENGTH field is ignored.
This field value must be 0000h when LongID = 0b. The field value must be 8 when LongID = 1b.
If LONG = 0b and Parameter List Length is not ZERO, the command is terminated with CHECK CONDITION status
and the Sense Key is set to ILLEGAL REQUEST. The Additional Sense Code is set to INVALID FIELD IN CDB.
If LONG = 1b and Parameter List Length is not eight (8), the command is terminated with CHECK CONDITION
status and the Sense Key is set to ILLEGAL REQUEST. The Additional Sense Code is set to INVALID FIELD IN
CDB.
When the LongID bit = 1b, the parameter list has the format shown in Table 6-82.
Table 6-82: RELEASE (10) LongID Only Parameter List — Data Format
Bit
7
6
5
4
3
2
1
0
Byte
0-7
(MSB)
Third Party Device ID
(LSB)
6-80
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REPORT DENSITY SUPPORT
6.Command Specification
6.19. REPORT DENSITY SUPPORT 44h
Bit
Byte
0
1
2
3
4
5
6
7
8
9
7
6
5
4
3
2
1
0
Operation Code (44h)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Allocation Length
(MSB)
MEDIA
(LSB)
Control
REPORT DENSITY SUPPORT provides information regarding the supported densities for the logical unit be sent to
application client.
MEDIA : The MEDIA bit of ZERO indicates that the drive shall return density support data block for densities
supported by the logical unit for any supported media. The data returned by the drive shall be static if the MEDIA bit
is ZERO. The MEDIA bit of ONE indicates that the drive shall return density support data block for densities
supported by the mounted medium. If the MEDIA bit is ONE and the logical unit is not in the ready state, CHECK
CONDITION status shall be returned. The sense key shall be sent to NOT READY.
The Allocation Length field specifies the maximum number of bytes that the drive may return.
The REPORT DENSITY SUPPORT command returns the REPORT DENSITY SUPPORT header followed by one
DENSITY SUPPORT data block. The Density support data blocks shall be in numerical ascending order of the
primary density code value for each block.
Table 6-83: REPORT DENSITY SUPPORT header
Bit
Byte
0
1
2
3
7
6
5
(MSB)
4
3
2
1
0
Available Density Support Length
(LSB)
Reserved (00h)
Reserved (00h)
Available Density Support Length: This field specified the number of bytes in the following data that is available to
be transferred. The Available density support length does not include itself.
Table 6-84: REPORT DENSITY SUPPORT data block descriptor
Bit
Byte
0
1
2
3
4
5
7
8
9
10
11
12
15
7
WRTOK(0)
(MSB)
6
DUP(0)
5
4
3
2
1
0
PRIMARY DENSITY CODE ( 30 h )
SECONDARY DENSITY CODE ( 30 h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM ( 00 11 D7 h )
(LSB)
(MSB)
MEDIA WIDTH (00 50 h)
(MSB)
TRACKS ( 00 01 h )
(MSB)
CAPACITY
(LSB)
(LSB)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
(LSB)
6-81
6.Command Specification
16
23
24
31
32
51
52
53
54
55
56
57
59
60
61
62
63
64
67
68
75
76
83
84
103
104
105
106
107
108
109
111
112
113
114
115
116
119
120
127
128
135
136
155
156
157
158
159
160
161
163
164
165
6-82
REPORT DENSITY SUPPORT
(MSB)
ASSIGNING ORGANIZATION ( SONY )
(MSB)
DENSITY NAME ( AIT-1 )
(MSB)
DESCRIPTION ( AdvIntelligentTape1 )
(LSB)
(LSB)
(LSB)
WRTOK(0)
DUP(0)
(MSB)
PRIMARY DENSITY CODE ( 31 h )
SECONDARY DENSITY CODE ( 30 h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM ( 00 19 AF h )
(LSB)
(MSB)
MEDIA WIDTH (00 50 h)
(MSB)
TRACKS ( 00 01 h )
(MSB)
CAPACITY
(MSB)
ASSIGNING ORGANIZATION ( SONY )
(MSB)
DENSITY NAME ( AIT-2 )
(MSB)
DESCRIPTION ( AdvIntelligentTape2 )
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
WRTOK(1)
DUP(0)
(MSB)
PRIMARY DENSITY CODE (32h)
SECONDARY DENSITY CODE (30h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM (0017D6h)
(MSB)
MEDIA WIDTH (00 50h)
(MSB)
(MSB)
TRACKS (00 01h)
(LSB)
(LSB)
(LSB)
CAPACITY
(LSB)
(MSB)
ASSIGNING ORGANIZATION (SONY)
(MSB)
DENSITY NAME (AIT-3)
(LSB)
(LSB)
(MSB)
DESCRIPTION (AdvIntelligentTape3)
(LSB)
WRTOK(1)
(MSB)
(MSB)
DUP(0)
PRIMARY DENSITY CODE (B3h)
SECONDARY DENSITY CODE (30h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM (00 17 9Fh)
MEDIA WIDTH (00 50h)
(LSB)
(LSB)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REPORT DENSITY SUPPORT
166
167
168
171
172
179
180
187
188
207
208
209
210
211
212
213
215
216
217
218
219
220
223
224
231
232
239
240
259
260
261
262
263
264
265
267
268
269
270
271
272
275
276
283
284
291
292
311
312
313
314
315
316
6.Command Specification
(MSB)
TRACKS (00 01h)
(LSB)
(MSB)
CAPACITY
(LSB)
(MSB)
ASSIGNING ORGANIZATION (SONY)
(MSB)
DENSITY NAME (AIT-3 Ex)
(MSB)
DESCRIPTION (AdvIntelligentTape3E)
(LSB)
(LSB)
(LSB)
WRTOK(0)
DUP(0)
(MSB)
PRIMARY DENSITY CODE (38h)
SECONDARY DENSITY CODE (30h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM (00 19 AF h)
(LSB)
(MSB)
MEDIA WIDTH (00 50 h)
(MSB)
TRACKS (00 01 h)
(MSB)
CAPACITY
(MSB)
SSIGNING ORGANIZATION (SONY)
(MSB)
DENSITY NAME (VAIT)
(MSB)
DESCRIPTION (ValueAdvIntlTape)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
WRTOK(0)
DUP(0)
(MSB)
PRIMARY DENSITY CODE (39h)
SECONDARY DENSITY CODE (30h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
BITS PER MM (00 19 AF h)
(LSB)
(MSB)
MEDIA WIDTH (00 50 h)
(MSB)
TRACKS (00 01 h)
(MSB)
CAPACITY
(LSB)
(LSB)
(LSB)
(MSB)
SSIGNING ORGANIZATION (SONY)
(MSB)
DENSITY NAME (VAIT-1)
(MSB)
DESCRIPTION (ValueAdvIntlTape1)
(LSB)
(LSB)
(LSB)
WRTOK(1)
DUP(0)
PRIMARY DENSITY CODE (3A h)
SECONDARY DENSITY CODE (30h)
DEFLT(1)
Reserved (00h)
Reserved (00h)
Reserved (00h)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-83
6.Command Specification
317
319
320
321
322
323
324
327
328
335
336
343
344
363
REPORT DENSITY SUPPORT
(MSB)
BITS PER MM (00 17 D6 h)
(MSB)
MEDIA WIDTH (00 50 h)
(MSB)
TRACKS (00 01 h)
(MSB)
CAPACITY
(MSB)
SSIGNING ORGANIZATION (SONY)
(MSB)
DENSITY NAME (VAIT-2)
(MSB)
DESCRIPTION (ValueAdvIntlTape2)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
Density support data blocks shall be returned by ascending primary density code values.
Primary Density Code: This field contains the value returned by a Mode Sense command for the density described
in the remainder of the density support block. The drive shall accept a Mode Select command containing this value,
for appropriate media. The value of 00h shall only be used for the default of the logical unit.
WRTOK: The WRTOK bit of ZERO indicates that logical unit support for this density does not include writing to the
media. The WRTOK bit of ONE indicates the logical unit is capable of writing this density to either the currently
mounted medium (Media bit in CDB set to one) or for some media (Media bit in CDB set to Zero).
DUP: The DUP bit of ZERO indicates this primary density code has exactly support data block. The DUP bit of ONE
indicates this primary density code is specified in more than on density support block.
DEFLT: The DEFLT bit of ZERO indicates this density in not the default density of the drive. The DEFLT of ONE
indicates this density is the default density of the logical unit. If neither the Primary or Secondary density code is zero
and the DEFLT bit is one, the logical unit shall accept a Mode Select density code of 00h as equivalent to the Primary
and Secondary density code.
Bits Per MM: This field indicates the number of bits per millimeter per track as recorded on the medium. The value
in this field shall be rounded up if the fractional value of the actual value is greater than or equal to 0.5. A value of 00h
indicates that the number of bits per millimeter does not apply to this logical unit. Direct of this value between
different suppliers (possible products) is discouraged since the definition of bits may vary.
Media Width: This field indicates the width of the medium supported by this density. This field has units of tenths of
millimeters. The value in this field of equal to 0.5. The Media Width field may vary for a given density depending on
the mounted medium. A value of 00h indicates that the width of the medium does not apply to this logical unit.
Tracks: This field indicates the number of data tracks supported on medium by this density.
Capacity: If MEDIA bit of CDB is set to 0, this field shall indicates the approximate capacity of the longest supported
medium assuming recording in this density with one partition. If the Media bit of CDB is set to 0, set to 0m this field
should indicate the approximate capacity of the current medium assuming recording in this density with one partition.
If the approximate capacity of the current medium cannot be determined for the mounted medium, the longest
supported medium capacity shall be used. The data and block size assumes that compression is disabled. The
capacity also assumes that the media is in “good” condition, and that “normal” data and block size are used. This
value is in units of megabytes (10000000 bytes). The logical unit does not guarantee that this space is actually
available in all cases.
6-84
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REPORT DEVICE IDENTIFIER
6.Command Specification
6.20. REPORT DEVICE IDENTIFIER A3h
Bit
Byte
0
7
6
5
4
3
2
1
0
Operation Code (A3h)
1
Reserved
Service Action
(05h)
2-5
Reserved
6-9
Allocation Length
10
Reserved
11
Control
The REPORT DEVICE IDENTIFIER command requests that the Logical Unit send device identification information
to the initiator.
Service Action: Must be 05h per SPC-2 standard.
For any value other than 05h, the command is terminated with CHECK CONDITION status, the sense key is set to
ILLEGAL REQUEST, and the ASC/ASCQ is set to INVALID FIELD IN CDB.
Allocation Length: If the Allocation Length is not sufficient to allow all of the parameter data to be returned, the first
portion of the data is returned (i.e., truncated). This is not considered an error.
Note: The actual length of the parameter data is calculated using the Identifier Length field in the parameter data
plus 4.
Processing a REPORT DEVICE IDENTIFIER may require the enabling a nonvolatile memory within the logical unit.
If the nonvolatile memory is not ready, the device server returns CHECK CONDITION status, rather than waiting for
the device to become ready. The sense key is set to NOT READY and the additional sense code is set to reflect an
appropriate reason for the NOT READY condition.
Note: This information should allow the initiator to determine the action required to cause the Logical Unit to become
ready.
6-85: REPORT DEVICE IDENTIFIER - Data Format
Bit
Byte
0-3
4-n
7
6
5
4
3
2
1
0
Identifier Length (n – 3)
Identifier
Identifier Length: Specifies the length in bytes of the Identifier field. If the Allocation Length field in the CDB is too
small to transfer the header and all of the identifier, the length is not adjusted to reflect the truncation.
The identifier length is initially equal to zero, and is changed only by a successful SET DEVICE IDENTIFIER
command.
Identifier: The value reported is the last value provided by a successful SET DEVICE IDENTIFIER command.
The value of the identifier is changed only by a successful SET DEVICE IDENTIFIER command.
The identifier value persists through resets, power cycles, media write operations, and media replacement.
If Identifier Length = 00000000h, this field is not present or has zero length.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-85
6.Command Specification
REPORT LUNS
6.21. REPORT LUNS A0h
Bit
Byte
0
1
2
3
4
5
6
7
8
9
10
11
7
6
5
4
3
2
1
0
Operation Code (A0h)
Reserved
Reserved
Reserved
Reserved
Reserved
(MSB)
Allocation Length
(LSB)
Reserved
Control
The REPORT LUNS command requests that the peripheral device logical unit numbers of known logical units in the
target be sent to the application client. The REPORT LUNS command shall return information about only those
logical units to which commands may be sent.
The REPORT LUNS command shall not be affected by reservations or persistent reservations.
The Allocation length shall be at least 16 bytes. If the Allocation length is less than 16 bytes, the device server shall
return CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and the additional sense
data shall be set to INVALID FIELD IN CDB.
The Allocation length is not sufficient to contain the logical unit number values for all configured logical units, the
device server shall report as many logical unit number values as will fit in the specified Allocation length. This shall
not be considered an error.
The device server shall report the logical unit numbers of configured original units using the format shown in table
6-86.
Table 6-86: LUN reporting parameter list format
Bit
Byte
0
3
4
7
8
15
7
(MSB)
6
5
4
3
2
1
0
LUN List Length (00 00 00 08h)
(LSB)
Reserved (0)
(MSB)
LUN List
LUN
(LSB)
The LUN list length shall contain the length in bytes of the LUN list that is available to be transferred. The LUN list
length is the number of logical unit numbers reported multiplied by eight. If the allocation length in the command
descriptor block is too small to transfer information about all configured logical units, the LUN list length value shall
not be adjusted to reflect the truncation.
6-86
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REQUEST SENSE
6.Command Specification
6.22. REQUEST SENSE 03h
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
2
1
0
Operation Code (03h)
Obsolete
Reserved
Reserved
Reserved
Allocation Length (1Ch)
Control
The REQUEST SENSE command requests that the target transfer sense data to the initiator.
The Sense Data will be valid for a CHECK CONDITION or RESERVATION CONFLICT status returned on the
previous command. The Sense data will be preserved by the target until retrieved by the REQUEST SENSE
command or until the receipt of any other command from the same initiator. The 28 bytes of Sense data are cleared
upon receipt of any subsequent command to the logical unit, including another REQUEST SENSE.
If the drive receives an unsolicited REQUEST SENSE, then it returns Sense Data with the File-mark, EOM and the
appropriate values in the Additional Sense Code/ Additional Sense Code Qualifier fields. These fields are only set if
the drive is currently logically positioned at BOM/P, EOM , EOD, or after a File-mark or after a Set-mark. The Host is
required to know what the current direction of tape motion is and, therefore to know whether the logical position at a
File-mark or Set-mark is either on the BOT or EOT side of that mark.
The positional information provided reflects the logical position of the drive. The drive returns information based on
the data still in its buffer as well as the data on tape.
The REQUEST SENSE command does not cause the drive to flush its buffered data to tape. Therefore, if the Host
requires the exact physical positioning of the media, it should precede the REQUEST SENSE with a WRITE
FILEMARKS command with the number of File-marks field = 0 and with the immediate bit set to ZERO. This
command will force the drive to flush any currently buffered data to tape. A subsequent REQUEST SENSE will
return the initiator the actual physical (and logical) position of the drive.
Note: The drive will only maintain valid positional information on normal operating commands. If the SEND
DIAGNOSTIC or READ/WRITE BUFFER commands are sent to the drive, valid positional information will not be
returned in response to an unsolicited REQUEST SENSE.
Allocation Length: The Allocation Length specifies the maximum number of sense bytes to be returned. The drive
terminates the transfer when the Allocation Length bytes have been transferred or when all available sense data has
been transferred to the Host, whichever is less.
The returned sense information has the following format:
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-87
6.Command Specification
REQUEST SENSE
Table 6-87: Error Codes 70h and 71h Sense Data Format
Bit
Byte
0
1
2
3
6
7
8
11
12
13
14
15
17
18
19
21
22
25
26
27
7
6
5
Valid
File-mark
(MSB)
EOM
ILI
4
3
2
1
0
Error Code (70h or 71h)
Segment Number
Reserved
Sense Key
Information Bytes
(LSB)
Additional Sense Length (14h)
Command-Specific Information
(MSB)
(LSB)
SKSV
Additional Sense Code
Additional Sense Code Qualifier
Field Replaceable Unit Code
Sense-Key Specific
(MSB)
Reserved
Read/Write Data Error Counter
(MSB)
Remaining Tape
(LSB)
Reserved
CLN
Reserved
Reserved
(LSB)
MEW
Valid: A valid bit of one indicates that the Information Bytes hold residual data as defined in the SCSI spec.
Error Code: A value of 70h indicates a current error, i.e. the report is associated with the most recently received
command. A value of 71h indicates a deferred error, i.e. the report is associated with a previous command and is not
as a result of the current command. No other values will be returned.
Segment Number: Contains the number of the current segment descriptor if the REQUEST SENSE command is in
response to a COPY command. Otherwise this byte is ZERO.
File-mark: This bit indicates that the current command has read a File-mark or a Set-mark. Reporting of Set-marks
is optional and indicated by the RSmk bit in the MODE SENSE/SELECT Device Configuration Parameter page.
EOM: An End-Of-Medium (EOM) bit of ONE indicates that an End-Of-Medium condition exists. This bit, when set,
indicates that the drive is at or past the Logical Early Warning Point if the direction was forward, or that the command
could not be completed because Beginning-Of-Partition was encountered if the direction was reverse. The drive will
also set the Sense Key to NO SENSE and the Additional Sense Code Qualifier to either 04h for Beginning of
Partition or 02h for End of Partition.
For WRITE type operations, the drive will return a CHECK CONDITION on any operation which occurs following
detection of the Early Warning End-of-Partition marker. The EOM and Additional Sense Code fields will be set.
For READ type operations, the drive will not return a CHECK CONDITION until the drive encounters the physical
End-of-Partition.
Note that at PHYSICAL End-of-Partition, a WRITE FILEMARK command will cause the command to terminate with
a CHECK CONDITION and a sense key of VOLUME OVERFLOW.
ILI: This is the Incorrect Length Indicator bit, which indicates that the requested logical block length did not match the
logical block length of the data on the medium. Only READ or VERIFY may cause this bit to be set.
Information Bytes: The conditions of these bytes will contain the differences (residue) of the requested length
minus the actual length in either bytes, blocks, File-marks or Set-marks as determined by the command. (Negative
values are indicated by two’s complement notation.) These bytes will be valid for all READ, WRITE, SPACE and
VERIFY commands for which a CHECK CONDITION status has been generated. These bytes will be ZERO for
MODE SELECT/SENSE, INQUIRY, READ BLOCK LIMITS and TEST UNIT READY commands.
6-88
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REQUEST SENSE
6.Command Specification
Additional Sense Length: This specifies the number of additional sense bytes that are to follow. If the Allocation
Length of the Command Descriptor Block is too small to transfer all of the additional sense bytes, the Additional
Sense Length is not adjusted to reflect the truncation.
Command Specific Information Bytes: Command Specific Bytes are unused, and will be ZERO.
Additional Sense Code and Additional Sense Code Qualifier: These two bytes provide additional information
about what caused the CHECK CONDITION status. They are used extensively by the drive. The information is
presented in the Sense Key Description table on the following pages.
Field Replaceable Unit Code: This byte is used to define a device specific mechanism or part that has failed. A
value of ZERO indicates that no specific mechanism or unit has been identified to have failed.
The units and their values are:
00h - Unable to identify failed unit
01h - Drive Mechanism
02h - Drive Electronics
Sense Key specific bytes: These fields will contain data that further defines the nature of the CHECK CONDITION.
If the sense field is set to ILLEGAL REQUEST and the SKSV bit is set to one, the Sense Key specific fields will be as
shown below. The fields point to illegal parameters sent by the Host.
Table 6-88: Field Pointer Bytes
Bit
Byte
15
16
17
7
6
5
SKSV(1)
(MSB)
C/D
Reserved
4
3
2
Reserved
BPV
Field Pointer
1
0
Bit Pointer
(LSB)
C/D: When this bit is set, it indicates that the illegal parameter is in the Command Descriptor Block. A C/D of ZERO
indicates that the illegal parameter is in the Parameter List sent by the Host during the DATA OUT phase.
BPV: When the Bit Pointer Valid bit is set, indicates that the Bit Pointer field specifies which bit of the byte designated
by the Field Pointer is in error. When a multiple-bit field is in error, the Bit Pointer field points to the most significant
(left most) bit of the field.
Field Pointer: This field indicates which byte of the Command Descriptor Block or of the Parameter List data was in
error. Bytes are numbered from ZERO. When a multiple byte field is in error, the pointer points to the most significant
byte of the field.
If the SKSV bit is ZERO, then the Field Pointer Bytes take the Sony Unique Format as shown below:
Table 6-89: Error Code and Status Bytes
Bit
Byte
15
16
17
7
6
5
SKSV(0)
4
3
2
1
0
Reserved
Runtime Error Code
Status Byte
Runtime Error Code: This field is part of the internal protocol and contains the Runtime (error set 0) Error code.
These internal error codes are also listed below, showing to which Sense, ASC and ASCQ fields they are mapped.
Status Byte: This field is not supported.
Read/Write Data Error Counter: After a read operation, this field returns "Number of read soft errors" fields of Log
data. After a write operation, this field returns "Number of write soft errors" fields of Log data. This field is valid only
after a READ or a WRITE command. It is direct mapping of the relevant Log data and is cleared/reset in the same
way as the Log data.
Remaining Tape: The capacity remaining of the tape in 1024 byte blocks is returned. This means the area from the
current logical position to EOP.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-89
6.Command Specification
REQUEST SENSE
CLN: When this bit is set, it indicates drive request cleaning . Refer to the clause 4.5.1
MEW: When this bit is set, it indicates Media Warning. Refer to the clause 4.5.2.3
A description of the different Sense Keys (Byte 2), Additional Sense Codes (Byte 12), and the Additional Sense
Code Qualifiers (Byte 13) supported by the SDX-800V are listed in a table beginning on the following page.
The following Table shows the REQUEST Sense Keys and the Additional Sense Key (Byte 12) and the Additional
Sense Key Qualifier (Byte 13) supported by the SDX-800V:
Table 6-90: Sense Key Descriptions
Sense
Key
Bytes
12
Description
13
00h
NO SENSE: Indicates that there is no specific sense key information to be reported for
the designated logical unit. This would be the case for a successful command or a
command that received CHECK CONDITION or COMMAND TERMINATED status
because one of the File-mark, EOM, or ILI bits is set to one. For File-mark or Set-mark
detected the drive will be positioned on the EOM side of the mark if the drive direction
was forward and on the BOM side of the mark if the direction was reverse.
00
00
NO ADDITIONAL SENSE INFORMATION
00
01
FILEMARK DETECTED
00
02
END-OF-PARTITION/MEDIUM DETECTED
00
03
SETMARK DETECTED
00
04
BEGINNING-OF-PARTITION/MEDIUM DETECTED
00
05
END-OF-DATA DETECTED
01h
RECOVERED ERROR.
5D 00
FAILURE PREDICTION THRESHOLD EXCEEDED
NOT READY. Indicates that the logical unit addressed cannot be accessed. Operator
intervention may be required to correct this condition. Typically this indicates that there
is no tape loaded. This status is also returned if the drive is currently rewinding
following REWIND with Immediate bit set and another command is received (except
for INQUIRY and READ BLOCK LIMITS which return GOOD status).
02h
04 00
LOGICAL UNIT NOT READY - Media is present within the drive.
This status is returned to any tape motion command following UNLOAD with
Immediate bit set or if the Eject button has been pressed by the operator. Also can be
caused by the command sequence, PREVENT ALLOW MEDIA REMOVAL with
Prevent bit set followed by UNLOAD. Tape motion commands such as READ, WRITE
or SPACE are not allowed but Diagnostics which do not access the tape are permitted.
6-90
04 01
LOGICAL UNIT IS IN PROCESS OF BECOMING READY - This status is returned
following a LOAD command with the IMMED bit set for any tape motion command
before the tape is loaded. Also during the auto load following a tape insertion.
30 03
CLEANING CARTRIDGE INSTALLED
3A 00
MEDIUM NOT PRESENT - This status is returned for all tape motion commands when
there is no media within the tape.
3A 04
MEDIUM NOT PRESENT MAM ACCESSIBLE
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REQUEST SENSE
6.Command Specification
MEDIUM ERROR. Indicates that the current command or a previously acknowledged
write-type operation terminated with a non-recovered error condition that was probably
caused by a flaw in the medium, an error in the recorded data or the cleanliness of the
head. This sense key may also be returned if the drive is unable to distinguish between
a flaw in the medium and a specific hardware failure (sense key 4h). This condition is
also marked by the Valid bit being set, indicating that the information bytes contain
residue information.
03h
00
02
END-OF-PARTITION / MEDIUM DETECTED
0C
00
WRITE ERROR – The Read-After-Write Retry limit was exceeded during Write.
Probably caused by a flaw in the media.
11
00
UNRECOVERED READ ERROR - C1, C2 & C3 Error Correction could not correct a
Read Error. Probably caused by a flaw in the media.
11
08
INCOMPLETE BLOCK READ - The drive could not read the AITFormat Group
containing the requested block. Could be caused by head clogging or media damage.
14
03
END-OF-DATA NOT FOUND – While Reading a AIT format tape, the drive
encountered blank (unformatted) media during a Read operation. This error could be
caused by serious head clogging.
15
02
POSITIONING ERROR DETECTED BY READ OF MEDIUM - Cannot find destination
Group during Space operation.
27
04
APPEND POSITION ERROR
30
00
INCOMPATIBLE MEDIUM INSTALLED - Format violation.
Possible that the Sub-Area cannot be read.
30
02
CANNOT READ MEDIUM, INCOMPATIBLE FORMAT - Format violation,
non-AIT-3Ex Format.
30
07
CLEANING FAILURE
31
00
MEDIUM FORMAT CORRUPTED - AIT format Group GIT, BAT, or Sub-Codes do not
match or are improper.
33
00
TAPE LENGTH ERROR - Attempting to select partition 1 on a single tape. Requested
partition size in MODE SELECT Medium Partitions Parameter page is too large (exceeds tape length) or too small (0<
requested partition size in frames < 2541).
3B 08
REPOSITION ERROR - Position lost during Read, Verify, Write, Space, Locate, Seek
or Select Partition operation.
50
00
WRITE APPEND ERROR - Cannot find the last frame of the Group and therefore,
cannot append.
52
00
CARTRIDGE FAULT
70
NN
DECOMPRESSION EXCEPTION SHORT ALGORITHM ID OF NN - ALGORITHM ID
<= 255
83
03
MIC Checksum Error
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-91
6.Command Specification
REQUEST SENSE
HARDWARE ERROR. Indicates that the drive detected a non-recoverable hardware
failure not related to the tape (for example, controller failure, device failure, parity error,
etc).While performing the command or during a self-test. If a previously acknowledged
write-type operation was the cause, the valid bit is set. The error code in sense byte 16
will indicate the specific problem. Refer to the error code table in the diagnostics clause
for more information.
04h
03
00
PERIPHERAL DEVICE WRITE FAULT - Drive electronics did not report successful
completion to a Write operation.
3F
01
MICROCODE HAS BEEN CHANGED – Illegal firmware code is reprogrammed.
44
00
INTERNAL TARGET FAILURE - Any unexpected internal error
Conditions Indicating a Non-recoverable hardware failure. Refer to the field
replaceable unit code field (sense byte 14) to determine which part of the drive is
failing. Host should issue SEND DIAGNOSTICS with the self-test bit set to thoroughly
test the drive. This sense information could also be returned after a send diagnostics
command ends with a check condition status. Host should issue RECEIVE
DIAGNOSTICS RESULTS for more details. Possible causes: buffer
overrun/under-run, format violation, mechanical status time-out, internal data parity
error, byte count mismatch, incorrect micro processor operation, unexpected SCSI
protocol chip interrupt.
83
06
05h
MIC READ ERROR
ILLEGAL REQUEST. Indicates that there was an illegal parameter in the Command
Descriptor Block or in the additional parameters supplied as data for some commands.
If the target detects an invalid parameter in the command descriptor block, then it shall
terminate the command without altering the medium. If the target detects an invalid
parameter in the additional parameters supplied as data, then the target may have
already altered the medium. This sense key may also indicate that an invalid
IDENTIFY message was received.
1A
00
PARAMETER LIST LENGTH ERROR - Indicates that the Parameter Length error in
the Command Descriptor Block. Either the value does not fall on a Header, Page or
Block descriptor boundary or the Parameter List Length is unexpectedly large.
20
00
INVALID COMMAND OPERATION CODE - Invalid or Unsupported command.
24
00
INVALID FIELD IN CDB – Bits are set in one or more fields are not supported or are
Reserved. Refer to the Field Pointer (Bytes 15-17) to identify the illegal bit or field.
25
00
LOGICAL UNIT NOT SUPPORTED - The SDX-800V has an embedded SCSI
controller with only one Logical Unit (LUN). The error indicates that the LUNTRN field
in the Identify message was not ZERO.
26
00
INVALID FIELD IN PARAMETER LIST - Test Number,
Configuration Number Header, or Field in the Parameter List was invalid or selected
Diagnostic test is not Host assessable.
6-92
26
01
PARAMETER NOT SUPPORTED - Unsupported page requested. Refer to the Field
Pointer (Bytes 15-17) to identify the illegal bit or field.
26
02
PARAMETER VALUE INVALID
2C
00
COMMAND SEQUENCE ERROR - Write Buffer command when tape is inserted and
not at BOT.
39
00
SAVING PARAMETERS NOT SUPPORTED
3D
00
INVALID BITS IN IDENTIFY MESSAGE - Identify message was not 80h or C0h.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REQUEST SENSE
05h
6.Command Specification
55
04
INSUFFICIENT REGISTRATION RESOURCES (attempt to register more than 1 key)
83
02
No MIC Detected
83
04
MIC out of Memory
83
05
No Data Body Detected in the MIC
83
0C
MIC format type is undefined
83
0D
MIC capacity field indicates illegal value.
83
80
Partition Count exceeded
83
89
User Volume Note Size Mismatch
83
8A
User Partition Note Size Mismatch
83
97
Current Partition is not the last partition
83
98
Can not append the new partition, because remaining capacity too short.
83
99
Can not delete partition
83 9B
Can not format tape because real tape capacity is exceeded
83 9C
Can not append new partitions because the MIC is out of memory
06h
UNIT ATTENTION. Indicates that the removable medium may have been changed or
the target has been reset.
28
00
NOT READY TO READY TRANSITION, MEDIUM MAY HAVE CHANGED
29
00
POWER ON, RESET, OR BUS DEVICE RESET OCCURRED
29
80
Drive Failed Power-on test or Diagnostic - (SONY Unique)
2A
01
MODE PARAMETERS CHANGED - Issued to all other initiators after one initiator
changes any Mode Parameter.
2A
03
RESERVATION PREEMPTED (after removing reservation by the CLEAR action)
2A
05
REGISTRATION PREEMPTED (after removing reservation by the PREEMPT or
PREEMPT ABORT action)
3F
11
MEDIUM AUXILIARY MEMORY ACCESIBLE
83
87
Broken MIC is loaded in AIT mode
07h
DATA PROTECT. Indicates that a WRITE type of operation was attempted on a write
protected tape, write operation is not performed.
27
00
WRITE PROTECTED – Cassette is Write Protected.
83
0B
BROKEN MIC – Cassette is Write Protected
08h
BLANK CHECK. Indicates the drive encountered blank medium or end-of-data
indication while reading.
00
00
NO ADDITIONAL SENSE INFORMATION - Blank Tape was encountered at BOT
00
05
END-OF-DATA DETECTED - During READ or SPACE command.
09h
Vendor Specific
83
08
MIC is not formatted yet
83
0B
MIC is broken
83
83
MIC is exist but is not used
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-93
6.Command Specification
0Bh
ABORTED COMMAND
43
00
MESSAGE ERROR – Unexpected Message phase.
45
00
SELECT OR RESELECT FAILURE - SCSI Selection/ Re-selection error.
47 00
SCSI PARITY ERROR - SCSI Parity Error detected and drive proceeded to Status
phase.
48
00
INITIATOR DETECTED ERROR MESSAGE RECEIVED.
4A
00
COMMAND PHASE ERROR
4B
00
DATA PHASE ERROR – Possible DMA error
4E
00
OVERLAPPED COMMANDS ATTEMPTED - Host issued a new command to the drive
while a previous command was being executed.
0Dh
VOLUME OVERFLOW
00
0Eh
0Fh
REQUEST SENSE
02
END-OF-PARTITION/MEDIUM DETECTED - During Write type operation.
MISCOMPARE. Not supported by the SDX-800V
RESERVED. Not used by SDX-800V
REQUEST SENSE returns the CHECK CONDITION status only to report fatal errors for the REQUEST SENSE
command.
For example:
The target receives a non ZERO reserved bit in the command descriptor block.
An un-recovered parity error occurs on the Data Bus.
A target malfunction prevents return of the sense data.
The Allocation Length falls between block boundaries.
Following a fatal error on REQUEST SENSE, the sense data should be considered invalid. The host may attempt
recovery by selecting the drive and issuing a BUS DEVICE RESET message directly following the IDENTIFY
message. This forces the drive to do a hard reset. If the fault persists, the host should deny access to the drive.
6-94
SONY AIT-3Ex drive SDX-800V series Ver.1.1
RESERVE UNIT
6.Command Specification
6.23. RESERVE UNIT (6/10) 16h and 56h
Table 6-91: RESERVE UNIT (6) CDB format
Bit
7
Byte
0
1
2
3
4
5
6
5
4
3
2
1
0
1
0
Long ID
Reserved
Operation Code (16h)
Reserved
Obsolete
Obsolete
Reserved
Reserved
Control
Table 6-92: RESERVE UNIT (10) CDB format
Bit
Byte
0
1
2
3
4
5
6
7-8
9
7
6
5
Reserved
4
3
Operation Code (56h)
3rdPty
Reserved
Obsolete
Third Party Device ID
Reserved
Reserved
Reserved
Parameter List Length
Control
2
The RESERVE (6/10) command reserves the Logical Unit for exclusive use by the requesting initiator or one other
specified SCSI device (3rd party). The RELEASE (6/10) command is used to release the Logical Unit if it was
reserved by the requesting initiator using a RESERVE (6/10) command and is still in the reserved state.
See PERSISTENT RESERVE OUT/IN for an alternate reservation system. The PERSISTENT RESERVE OUT
command cannot be used to release a reservation generated by the RESERVE (6/10) commands.
Third party reservation management operations are only allowed using RESERVE (10) and RELEASE (10).
Logical Unit reservation management operations are allowed using RESERVE (6/10) and RELEASE (6/10).
The reservation remains in effect until one of the following conditions is met:
- The initiator that made the reservation sends another RESERVE UNIT command.
- The Logical Unit is released by a RELEASE (6/10) command from the same initiator.
- The Logical Unit in a 3rd Party reservation is released by a RELEASE (10) command from the same initiator.
- A TARGET RESET or LOGICAL UNIT RESET Task Management function is received from any initiator.
The occurrence of the last two conditions is indicated by the Logical Unit returning a CHECK CONDITION status with
a sense key of UNIT ATTENTION on the next command following the condition.
It is not an error for an initiator to issue a new RESERVE (6/10) command to the Logical Unit when the Logical Unit
is currently reserved by that same initiator. If the Logical Unit has previously been reserved by another initiator, then
the Logical Unit terminates the command with RESERVATION CONFLICT status.
If, after honoring the reservation, any other initiator then attempts to perform any command except INQUIRY,
REQUEST SENSE, REPORT LUNS or RELEASE UNIT, then the command is rejected with a RESERVATION
CONFLICT status. A RELEASE UNIT command issued by another initiator will be ignored by that reserved logical
unit.
Obsolete: These fields are not supported and must be set to ZERO.
If this field is not ZERO, the command is terminated with CHECK CONDITION status and the Sense Key is set to ILLEGAL REQUEST. The
Additional Sense Code is set to INVALID FIELD IN CDB.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-95
6.Command Specification
RESERVE UNIT
3rd Party: Third Party Release allows an initiator to reserve a logical for third party operations.
If the value in this field is 0b, a Logical Unit reserve is requested.
If 3rdPty = 1b, the Logical Unit reserves the specified logical unit, but only if the initiator, 3rdPty bit, and Third Party
Device ID fields (in CDB or in Parameter List). The Logical Unit retains this information to determine when a 3rd Party
release function is valid.
LongID: If the Long ID bit is set to 1b and 3rd Party is set to 1b and the Parameter List Length is 8, the parameter list
contains the eight bytes of the device ID of the Third Party Device ID.
If the 3RDPTY bit is zero, the LONGID bit field is ignored.
This is required for Fiber Channel since each Device ID is at least three bytes long.
Third-Party Device ID: If the Third-Party bit is ZERO, then the Third-Party Reservation option is not requested. If
the 3rdPty bit is one, a RESERVE UNIT reserves the drive for the SCSI device specified in the Third-Party Device ID
field (LongID = 0b) or the parameter data (LongID = 1b). The Logical Unit preserves the reservation until any one of
the conditions mentioned above occurs.
The Logical Unit ignores any attempt made by any other initiator to release the reservation and returns GOOD
status.
If the Third Party Device ID value is equal to or smaller than 255, the LongID field may be 0b and the Third Party
Device ID value is sent in this field.
The contents of the Third Party Device ID field in the CDB is ignored when LongID = 1b; see Parameter List Length.
Note: If the Third Party Device ID value is greater than 255 (FFh), LongID must be set to 1b.
Parameter List Length: The contents of this field specify the length, in bytes, of the parameter list that is transferred
from the initiator to the Logical Unit.
If the 3RDPTY bit is set to ZERO or LongID is set to ZERO, the PARAMETER LIST LENGTH field is ignored.
The field value is ignored when LongID = 0b.
The field value must be at least 8 when LongID = 1b.
If LongID = 0b and Parameter List Length is not ZERO, the command is terminated with CHECK CONDITION status
and the Sense Key is set to ILLEGAL REQUEST. The Additional Sense Code is set to INVALID FIELD IN CDB.
If LongID = 1b and Parameter List Length is not at least eight (8), the command is terminated with CHECK
CONDITION status and the Sense Key is set to ILLEGAL REQUEST. The Additional Sense Code is set to INVALID
FIELD IN CDB.
An initiator that holds a current reservation may modify that reservation e.g., switch third-parties by issuing another
RESERVE UNIT command to the drive.
If the logical unit has previously been reserved by another initiator, the Logical Unit returns RESERVATION
CONFLICT status.
When the LongID bit = 1b, the parameter list has the format shown in Table 6-93.
Table 6-93: RESERVE (10) LongID Only Parameter List — Data Format
Bit
Byte
7
6
5
4
3
2
1
0
(MSB)
0-7
Third Party Device ID
(LSB)
The Logical Unit supports superseding reservations. If a superseding reservation cannot be granted because of
conflicts with a previous reservation, other than the reservation being superseded, the Logical Unit returns
RESERVATION CONFLICT status.
6-96
SONY AIT-3Ex drive SDX-800V series Ver.1.1
REWIND
6.Command Specification
6.24. REWIND 01h
Bit
Byte
0
1
2
3
4
5
7
6
5
Obsolete
4
3
Operation Code (01h)
Reserved
Reserved
Reserved
Reserved
Control
2
1
0
Immed
REWIND tells the drive to position the media at the beginning of the currently active partition. Before rewinding, the
drive writes any buffered data to tape and appends an EOD marker.
Immed: When this bit is set, the drive writes any remaining buffered data followed by an EOD marker to tape. It then
returns status to the Host before beginning the actual rewind operation. If the Immediate bit is not set, status will be
returned after the rewind has completed.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-97
6.Command Specification
SEND DIAGNOSTIC
6.25. SEND DIAGNOSTIC 1Dh
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
Operation Code (1Dh)
PF
Reserved
Reserved
Parameter List Length
Obsolete
(MSB)
2
1
0
Self Test
DevOfl(0)
UnitOfl
(LSB)
Control
SEND DIAGNOSTIC tells the drive to perform diagnostic tests on itself.
PF: The drive expects the Page Format bit to be set to indicate that the parameters transferred during the DATA
OUT phase will include four bytes of header information as well as the diagnostic test bytes.
If this bit is not set the parameter bytes will only describe the diagnostic test. Note that if the Self Test bit is set, this
bit must be ZERO else the drive will return CHECK CONDITION with the ILLEGAL REQUEST sense key set.
Self Test: When this bit is set the drive executes its POWER-ON SEQUENCE. The Parameter List Length must be
ZERO when this bit is set other-wise the drive will return a CHECK CONDITION status with an ILLEGAL REQUEST
sense key set. After Self Test, a LOAD command is required to bring the drive online.
DevOfl: Device Off-line is not supported and shall be set to ZERO, otherwise the driver will return a CHECK
CONDITION status with an ILLEGAL REQUEST SENSE key set.
UnitOfl: This bit must be set for proper operation of any diagnostic test except Self Test. If this bit is not set, except
for self-test, the drive will return a CHECK CONDITION status with an ILLEGAL REQUEST sense key set.
Parameter List Length: This field provides the count of the number of Parameter List bytes which will be transferred
in the DATA OUT phase. These bytes describe the test that is to be run. This field must be set to ZERO if the
Self-Test bit is set.
If the PF bit is ZERO, the Parameter List describes the diagnostic test to be executed. The diagnostic tests are five
bytes in length. If the Parameter List Length is not set to five or ZERO if the Self-Test bit is set , the drive returns a
CHECK CONDITION status with an ILLEGAL REQUEST sense key set.
If the PF bit is set, the Parameter List includes a four byte header as of the form:
Table 6-94: Diagnostic Page Format
Bit
Byte
0
1
2
3
7
(MSB)
6
5
4
3
2
1
0
Page Code
Reserved
Page Length (n-3)
(LSB)
Page Code: The drive supports two Page Codes:
00h - Return Supported pages
81h - Drive Diagnostic page
For Page Code 00h, the Page Length must be ZERO and the Parameter List Length must be set to four otherwise
the drive returns a CHECK CONDITION status with an ILLEGAL REQUEST sense key set. This Page Code
requests that the drive return a list of the supported pages in the DATA IN phase of RECEIVE DIAGNOSTIC.
For Page Code 81h, the Page Length must be five and the Parameter List Length must be set to nine otherwise the
drive returns a CHECK CONDITION status with an ILLEGAL REQUEST sense key set. This page Code instructs the
drive to execute the five bytes of diagnostic test that follow the four bytes of header. The five bytes of diagnostic test
information will be of the form:
6-98
SONY AIT-3Ex drive SDX-800V series Ver.1.1
SEND DIAGNOSTIC
6.Command Specification
Table 6-95: Diagnostic Test information
Bit
Byte
0
1
2
3
4
7
6
5
Break
4
3
2
1
0
Diagnostic Test Number
Loop Count Identifier
Parameter A
Parameter B
Parameter C
Diagnostic Test Number: Number identifying which test to execute
Break:
Indicates how to terminate the loop count should an error occur.
0 = stop on first error
1 = do not stop on error
Loop Count Identifier: The number of times that the test should be repeated before status is returned.
1 = run once
1 = run once
2 = run 10 times
3 = run 100 times
4 = run 1000 times
Parameters A, B, C: Any additional parameters required to fully define the diagnostic test.
If the test completes successfully, the drive returns GOOD status. If the test failed, CHECK CONDITION status is
returned with a HARDWARE ERROR Sense Key and an Additional Sense Code of DIAGNOSTIC FAILURE set. The
Host should then send a REQUEST DIAGNOSTIC command which will return information as to which test failed
and the nature of the failure. If the test requested is not defined, not available to the requested processor, or not
executable in the current configuration, this information will be reported in the data returned by the REQUEST
DIAGNOSTIC command.
Refer to clause 7, Drive Diagnostics for more detailed information about the supported diagnostic tests and test
operations.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-99
6.Command Specification
SET DEVICE IDENTIFIER
6.26. SET DEVICE IDENTIFIER A4h
Table 6-96: SET DEVICE IDENTIFIER command
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation Code (A4h)
1
Reserved
Service Action
(06h)
2–5
Reserved
6–9
Parameter List Length
10
Reserved
11
Control
The SET DEVICE IDENTIFIER command (Table 6-96) requests that the device identifier information in the logical
unit be set to the value received in the SET DEVICE IDENTIFIER command parameter list. In this implementation,
only Service Action 06h is supported (all other options are for disk array use (SCC-2)).
The Identifier set by an initiator may be from 0 (reset) to 64 bytes in increments of 1 byte.
The identifier is preserved over power cycles and reset events (see the REPORT DEVICE IDENTIFIER command).
Service Action: Service Action must be 06h.
If the Service Action is not 06h, the command is terminated with CHECK CONDITION status, the sense key is set to
ILLEGAL REQUEST, and the ASC/ASCQ is set to INVALID FIELD IN CDB.
Parameter List Length: Parameter List Length specifies the length in bytes of the Identifier that is transferred from
the application client to the Logical Unit. The maximum value for this field is 64 bytes; the minimum is 0.
If the parameter list length exceeds 64, the command is terminated with CHECK CONDITION status, the sense key
is set to ILLEGAL REQUEST, and the ASC/ASCQ is set to INVALID FIELD IN CDB.
A parameter list length of ZERO indicates that no data is to be transferred, the identifier in the Logical unit is to be set
to zero length, and subsequent REPORT DEVICE IDENTIFIER commands return an Identifier length of zero.
The SET DEVICE IDENTIFIER parameter list contains the identifier to be set by the logical unit (see Table 6-97).
Table 6-97: SET DEVICE IDENTIFIER Parameter List — Data Format
Bit
7
6
5
4
3
2
1
0
Byte
0 - <= 63
Identifier
The Identifier field is an initiator selected value, to be returned in subsequent valid REPORT DEVICE IDENTIFIER
commands or until reset or until replaced by another valid SET DEVICE IDENTIFIER command.
On successful completion of a SET DEVICE IDENTIFIER command a unit attention shall be generated for all
initiators except the initiator that issued the SET DEVICE IDENTIFIER command with service action 06h. When
reporting the unit attention condition the additional sense code shall be set to DEVICE IDENTIFIER CHANGED.
6-100
SONY AIT-3Ex drive SDX-800V series Ver.1.1
SPACE
6.Command Specification
6.27. SPACE 11h
Bit
Byte
0
1
2
3
4
5
7
6
5
4
3
2
Operation Code (11h)
Reserved
Obsolete
1
0
Code
(MSB)
Count
(LSB)
Control
SPACE provides a variety of positioning functions that are determined by the Code and Count fields in the Command
Descriptor Block. Both forward (toward EOM/P) and reverse (toward BOM/P) positioning are provided.
Code: The supported values are:
Table 6-98: SPACE codes
Code
000b
001b
011b
100b
Description
Blocks
File-marks
End-Of-Data
Set-marks
Note: The drive will reject a SPACE Set-mark command if it has not configured through MODE SELECT to report
Set-marks. The drive will return a CHECK CONDITION status with the Sense data set to ILLEGAL REQUEST. In
this command description the word “mark” is used to mean File-mark or Set-mark. Only where their responses differ
shall File-mark and Set-mark be referred explicitly.
Count: When spacing over blocks or marks, the Count field is interpreted as follows:
A positive value N causes forward movement over N blocks or marks. The tape is logically positioned after the Nth
block (or mark) on the EOM/P side.
A ZERO value causes no change in the logical position.
A negative value -N (2’s complement notation) causes reverse movement over N blocks or marks. The tape is
logically positioned on the BOM /P side of the Nth block (or mark).
When spacing to EOD, the Count field is ignored. Forward movement occurs until the drive encounters EOD. The
position is such that a subsequent WRITE command would append data after the last entity that has been written to
tape before EOD.
When executing a SPACE, the drive implements the following hierarchy: Blocks (lowest), File-marks, Set-marks,
EOD, BOM/P or EOM/P (highest)
Therefore, SPACE N blocks will halt with GOOD status after the Nth block, or with CHECK CONDITION status on
any occurrence of File-mark, Set-mark, EOD, BOM/P or EOM/P. SPACE N File-marks will halt on the Nth File-mark
or on any occurrence of Set-mark, EOD, BOM/P or EOM/P, and so on. Within the Sense data, the fields will be set as
described on the following table.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-101
6.Command Specification
SPACE
Table 6-99: SPACE CHECK CONDITION results
Spacing
Blocks
File-marks
Set-marks
EOD
Event
Detected
Sense Data
Sense Key
Valid
Mark
EOM
ASC/ASCQ
Note
File-mark
1
1
0
No Sense
File-mark Detected
a,b
Set-mark
1
1
0
No Sense
Set-mark Detected
a,b,d
EOD
1
0
0
Blank Check
BOT
1
0
1
No Sense
BOM/P Detected
b,f
Phy EOT
1
0
1
Medium Error
EOM/P Detected
b,g
Set-mark
1
1
0
No Sense
Set-mark Detected
a,b,d
EOD
1
0
0
Blank Check
BOT
1
0
1
No Sense
BOM/P Detected
b,f
Phy.EOT
1
0
1
Medium Error
EOM/P Detected
b,g
EOD
1
0
0
Blank Check
BOT
1
0
1
No Sense
BOM/P Detected
b,f
Phy.EOT
1
0
1
Medium Error
EOM/P Detected
b,g
BOT
0
0
1
No Sense
BOM/P Detected
c,f
Phy.EOT
0
0
1
Medium Error
EOM/P Detected
c,g
b,e
b,e
b,e
Note a: The logical position is located on the EOM side of the mark if movement was in the forward direction and on
the BOM side of the mark if movement was in the reverse direction.
Note b: The Information field is set to the difference (residue) between the requested count and the actual number of
blocks, file marks, Set-marks, or spaced over.
Note c: The Information field will contain no residue count and therefore the Valid bit is not set.
Note d: The drive will only report that a Set-mark has been detected while spacing over blocks or File marks, if it has
been configured through MODE SELECT to Report Set-marks. Otherwise, the drive will continue the space
operation and the presence of the Set-mark will be transparent to the Host.
Note e: The tape is positioned such that a subsequent WRITE would append data after the last entity that has been
written to the tape before EOD.
Note f: The tape is physically positioned at BOM/P.
Note g: EOM is only reported when the physical EOM/P is encountered. The tape is physically positioned at EOM/P.
6-102
SONY AIT-3Ex drive SDX-800V series Ver.1.1
SPACE
6.27.1.
6.Command Specification
CHECK CONDITION
NO SENSE: If a File-mark occurs while spacing over blocks, the File-mark and Valid bits in extended sense are set
to one. The Information bytes are set to the difference (residue) between the requested count and the actual number
of blocks spaced over (not including the mark).
If a Save Set Mark occurs while spacing over blocks or File-marks, nothing is reported unless the SDX-800V C has
been configured through MODE SELECT to Report Save Set Marks.
If the Report Save-Set Marks configuration is enabled and a Save-Set Mark occurs while spacing over blocks or File
marks, the Valid bit and the Additional Sense keys in the Returned Sense data are set to indicate that a Save-Set
Mark has been encountered. The information bytes are set to the difference (residue) in the requested count and the
actual number of blocks or Save-Set Marks spaced over (not including the detected Save-Set Mark).
If End-of-Data is detected while spacing over blocks or marks, the Valid bit and the Additional Sense Keys in the
Returned Sense Data are set to indicate that an EOD mark has been encountered. The Information bytes are set to
the difference (residue) in the requested count and the actual number of blocks or marks spaced over.
If BOT is detected while spacing over blocks or marks in the reverse direction, the EOM bit is set in extended sense.
The Valid bit is set to one and the Information bytes to the difference (residue) between the requested count and the
actual number of blocks or File marks spaced over.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-103
6.Command Specification
TEST UNIT READY
6.28. TEST UNIT READY 00h
Bit
7
Byte
0
1
2
3
4
5
6
5
4
3
2
1
0
Operation Code (00h)
Obsolete
Reserved
Reserved
Reserved
Reserved
Control
TEST UNIT READY checks if the drive is ready. This is not a request for a self-test. If the drive has a tape loaded,
this command will return a GOOD status. Otherwise, CHECK CONDITION will be reported and the sense key will be
NOT READY.
Table 6-100: TEST UNIT READY results
Drive Status
Sense Key
ASC/ASCQ Description
Tape Loaded
00 No Sense
00 NO ADDITIONAL SENSE INFORMATION
No Tape Present
02 Not Ready
3A 00 MEDIUM NOT PRESENT
Tape Loading
02 Not Ready
04 01 LOGICAL UNIT IS BECOMING READY
Tape Unloading
02 Not Ready
04 00 LOGICAL UNIT NOT READY
Tape Unloaded (but retained in drive)
02 Not Ready
04 00 LOGICAL UNIT NOT READY
6-104
SONY AIT-3Ex drive SDX-800V series Ver.1.1
WRITE
6.Command Specification
6.29. WRITE 0Ah
Bit
Byte
0
1
2
3
4
5
7
6
5
Obsolete
4
3
2
1
Operation Code (0Ah)
Reserve
0
Fixed
(MSB)
Transfer Length
(LSB)
Control
WRITE transfers one or more blocks from the Host to the tape beginning at the current logical position.
Fixed: The Fixed Bit specifies both the meaning of the Transfer Length field and whether fixed-length or
variable-length blocks are to be transferred.
If the Fixed bit is set to ZERO, Variable Block mode is selected. The Transfer Length specifies the maximum number
of bytes that the drive handshakes out from the initiator. A single block is transferred from the initiator and is written
beginning at the current logical tape position. Upon successful termination, the tape is logically positioned after this
block (EOM/P side). The Transfer Length specifies the maximum number of bytes that the drive handshakes out
from the initiator.
If the Fixed Bit is set to one, the Transfer Length field specifies the number of blocks to be transferred to the drive,
beginning at the current logical position. This is valid only if the drive is currently operating in Fixed Block mode, in
other words, when it has been instructed to use fixed-length blocks with MODE SELECT. The current block length is
the block length defined in the MODE SELECT command. Upon termination, the tape is logically positioned after
these blocks (EOM/P side).
If EOT is detected while writing, the drive will finish writing any buffered data. The command will terminate with
CHECK CONDITION status. Within the Sense data, the EOM bit is set, the Sense Key field is set to NO SENSE and
the Additional Sense Code and Additional Sense Code Qualifier fields are set to EOM/P detected. The drive will
attempt to complete any subsequent writes, returning a CHECK CONDITION status in each case.
Note: If the host issue a write command with the odd block size and Wide SCSI, the CHECK CONDITION STATUS
will be reached and the sense key will be set to ILLEGAL REQUEST.
If the drive encounters the physical EOM when attempting a WRITE, a CHECK CONDITION status is returned.
Within the Sense data, the EOM and Valid bits are set and the Sense Key field is set to VOLUME OVERFLOW. The
Information fields contain the residue count and the Additional Sense Code and Additional Sense Code Qualifier
fields are set to EOM/P Detected. The tape is physically positioned at EOM/P.
If the Transfer Length is ZERO, no data will be transferred and the current position on the logical unit will not be
changed.
The drive flushes its write buffer to tape and appends an EOD marker under the following conditions:
Receipt of the following non-write commands:
READ
SPACE
ERASE
READ BUFFER
WRITE BUFFER
REWIND
LOAD/UNLOAD
MODE SELECT
LOCATE
The buffer can be maintained through the following media commands, assuming that no other flush condition has
been met, for example, write hold-off time-out.
1.
WRITE
WRITE FILE MARKS with Immediate bit set
2.
The write hold-off time limit is exceeded.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-105
6.Command Specification
WRITE ATTRIBUTE
6.30. WRITE ATTRIBUTE 8Dh
The WRITE ATTRIBUTE command (table 6-101) allows an application client to write attributes to medium auxiliary
memory. Application clients should issue the READ ATTRIBUTE command prior to using this command to discover
device server support for medium auxiliary memory.
Table 6-101: WRITE ATTRIBUTE command
Bit
Byte
7
6
5
4
3
0
OPERATION CODE ( 8Dh)
1
Reserved (0)
2
(MSB)
0
(LSB)
4
Reserved for SMC –2 devices (0)
5
VOLUME NUMBER
6
Reserved (0)
7
PARTITION NUMBER
8
Reserved (0)
9
Reserved (0)
11
1
Reserved for SMC –2 devices (0)
3
10
2
(MSB)
PARAMETER LIST LENGTH
12
(LSB)
13
14
Reserved (0)
15
CONTROL
The VOLUME NUMBER specifies a volume within the Medium Auxiliary Memory. The number of volumes of the
MAM shall equal that of the attached multi-volume medium. If the medium only has a single volume, then this field
shall be set to zero.
The PARTITION NUMBER specifies a partition within a volume. The number of partitions of the MAM shall equal
that of the attached multi-partition medium. If the medium only has a single partition, then this field shall be set to
zero.
If the combination of VOLUME NUMBER and PARTITION NUMBER is not valid, the command shall be terminated
with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST, and the additional sense
data shall be set to INVALID FIELD IN CDB.
The PARAMETER LIST LENGTH field specifies the length in bytes of the parameter list contained in the DATA-OUT
Buffer. A parameter list length of zero indicates that no parameter data is present; this shall not be considered an
error. If the parameter list length results in the truncation of an attribute, the WRITE ATTRIBUTE command shall be
terminated with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and the additional
sense code shall be set to PARAMETER LIST LENGTH ERROR.
The parameter list shall have the format shown in table 6-102. Attributes should be sent in ascending numerical
order. If the attributes are not in order, no attributes shall be changed and the WRITE ATTRIBUTE command shall
be terminated with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and the
additional sense code shall be set to INVALID FIELDIN PARAMETER LIST.
6-106
SONY AIT-3Ex drive SDX-800V series Ver.1.1
WRITE ATTRIBUTE
6.Command Specification
Table 6-102: WRITE ATTRIBUTE parameter list format
Bit
Byte
0
7
6
5
4
3
2
1
0
(MSB)
3
PARAMETER DATALENGTH (n-3)
(LSB)
4
.
.
ATTRIBUTE 0
…
.
.
n
ATTRIBUTE x
The PARAMETER DATA LENGTH field should contain the number of bytes of attribute data and should be ignored
by the device server.
The format of the attribute is described later.
If there is not enough space to write the attributes to the medium auxiliary memory, no attributes shall be changed
and the WRITE ATTRIBUTE command shall be terminated with a CHECK CONDITION status. The sense key shall
be set to ILLEGAL REQUEST and the additional sense code shall be set to AUXILIARY MEMORY OUT OF SPACE.
If the medium auxiliary memory is not accessible because there is no medium present, no attributes shall be
changed and the WRITE ATTRIBUTE command shall be terminated with a CHECK CONDITION status. The sense
key shall be set to NOT READY and the additional sense code shall be set to AUXILIARY MEMORY NOT
ACCESSIBLE.
If the Medium Auxiliary Memory has failed (e.g. bad checksum) the WRITE ATTRIBUTE command shall be
terminated with a CHECK CONDITION status. The sense key shall be set to MEDIUM ERROR and the additional
sense code shall be set to AUXILIARY MEMORY WRITE ERROR.
If the WRITE ATTRIBUTE command parameter data contains an attribute with an ATTRIBUTE LENGTH field set to
zero, then one of the following actions shall occur:
If the attribute state is unsupported or read only, no attributes shall be changed and the WRITE ATTRIBUTE
command shall be terminated with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST
and the additional sense code shall be set to INVALID FIELD IN PARAMETERLIST;
If the attribute state is read/write, the attribute shall be changed to the nonexistent state. The attribute shall not be
returned in response to a READ ATTRIBUTE command and not reported by the read ATTRIBUTE command with
ATTRIBUTE LIST service action; or
If the attribute state is nonexistent, the attribute in the WRITE ATTRIBUTE command parameter list shall be ignored;
this shall not be considered an error.
If any of the following conditions occur, no attributes shall be changed, the WRITE ATTRIBUTE command shall be
terminated with a CHECK CONDITION status, the sense key shall be set to ILLEGAL REQUEST, and the additional
sense code shall be set to INVALID FIELD IN PARAMETER LIST.
If the parameter data attempts to change an attribute in the read only state.
If the parameter data contains an attribute with INCORRECT ATTRIBUTE LENGTH field contents; or
If the parameter data contain an attribute with unsupported ATTRIBUTE VALUE field contents.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-107
6.Command Specification
WRITE BUFFER
6.31. WRITE BUFFER 3Bh
Bit
Byte
0
1
2
3
5
6
8
9
7
6
5
4
3
Operation Code (3Bh)
Reserved
Buffer ID
Buffer Offset
Obsolete
(MSB)
2
1
0
Mode
(LSB)
(MSB)
Parameter List Length
(LSB)
Control
WRITE BUFFER is used in conjunction with the READ BUFFER command as a diagnostic function.
WRITE BUFFER command is valid only when there is no tape inserted in the drive, or when the tape is positioned at
BOT. An attempt to issue the Write Buffer command when the tape is not at BOT will result in a CHECK CONDITION
status with a Request Sense Key of ILLEGAL REQUEST.
Note: The drive will write any buffered data to tape prior to executing this command. Any data that is then transferred
by the WRITE BUFFER is not written to tape.
Mode: The drive supports the following values within the Mode field. If any other value is set, the drive will terminate
the command with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set.
Any Write Data, file-marks or set-marks in buffer will be transfer to tape before this command is executed.
Table 6-103: WRITE BUFFER Mode Field
Mode
0000b
0010b
1010b
Description
Write combined header and data
Write data
Echo Buffer
Combined Header and Data Mode - in this mode, the test data to be transferred must be preceded by a four-byte
header. The four-byte header consists of all reserved bytes. The Parameters List Length specifies the maximum
number of bytes that will be transferred during the DATA OUT phase. This number includes four bytes of header, so
the data length to be stored in the buffer is transfer length minus four. The initiator should ensure that the transfer
length is not greater than four plus the available length that is returned in the header of the READ BUFFER
command.
Data Mode - in this mode, the DATA OUT phase contains only buffer test data.
Table 6-104: WRITE BUFFER Mode Field
Buffer ID: The supported values are:
Buffer ID
0
80
81
82
83
Description
Write Group Buffer
Write Group Buffer
Write Group Buffer
Write Group Buffer
Write Group Buffer
Offset
0
- 0x01000000
0
- 0x01000000
0x01000000 - 0x02000000
0x02000000 - 0x03000000
0x03000000 - 0x04000000
If an unsupported Buffer ID code is requested, the drive returns a CHECK CONDITION status with an ILLEGAL
REQUEST sense key.
Buffer Offset: The buffer offset field contains the byte offset within the specified buffer from which data shall be
transferred to. The initiator should conform to the offset boundary requirements returned in the WRITE BUFFER
descriptor. If the target is unable to accept the specified buffer offset, it shall return CHECK CONDITION status, shall
set the Sense Key to ILLEGAL REQUEST, and set the Additional Sense Code to ILLEGAL FIELD IN CDB.
6-108
SONY AIT-3Ex drive SDX-800V series Ver.1.1
WRITE BUFFER
6.Command Specification
Parameter List Length: specifies the maximum number of bytes that will be transferred during the Data Out phase.
The initiator should attempt to ensure that the Parameter List Length does not exceed the buffer capacity. If this does
occur, the drive returns a CHECK CONDITION status with an ILLEGAL REQUEST sense key set. The capacity of
the buffer can be determined from the Buffer capacity field in the Read Buffer descriptor. The Parameter List Length
must be greater than four (except in data only mode), else the drive will return a CHECK CONDITION status with an
ILLEGAL REQUEST sense key set.
Echo Buffer: In this mode the data shall be stored in an echo buffer. Data shall be sent aligned on four-byte
boundaries. The BUFFER ID and BUFFER OFFSET fields are ignored in this mode. The drive assigns echo buffer
on a per initiator basis. The initiator should attempt to ensure that the parameter list length does not exceed the
capacity of the echo buffer. The BUFFER CAPACITY field in the READ BUFFER echo buffer descriptor determines
the capacity of the echo buffer. If the PARAMETER LIST LENGTH field exceeds the buffer capacity, the drive will
return CHECK CONDITION status with a Request Sense Key of ILLEGAL REQUEST.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
6-109
6.Command Specification
WRITE FILEMARKS
6.32. WRITE FILEMARKS 10h
Bit
Byte
0
1
2
3
4
5
7
6
Obsolete
5
4
3
Operation Code (10h)
Reserved
2
1
0
WSmk
Immed
(MSB)
Number of File-marks or Set-marks
(LSB)
Control
WRITE FILEMARKS causes the specified number of File-marks or Set-marks to be written, beginning at the current
logical position on tape.
WSmk: If this bit is set, the drive writes a Set-mark to tape instead of a File-mark.
Immed: If this bit is set, the drive returns status as soon as the Command Descriptor Block has been validated. An
Immediate bit of ZERO indicates that status will not be returned until the operation has completed.
Number of File-marks or Set-marks: This is the number of consecutive marks to be written to tape. A value of
ZERO is not considered an error and GOOD status is returned.
This command may be used to force the drive to write any buffered data to the tape. The requested mark(s) will be
appended to the data and the write buffer will be flushed to tape. A ZERO value in the Number of File-marks field
indicates that no File-marks are to be written to the tape but the write buffer is still flushed to tape.
If EOT is detected while writing the marks, the drive will finish writing any buffered data. The command will terminate
with CHECK CONDITION status. Within the Sense data, the EOM bit is set, the Sense Key field is set to NO SENSE
and the Additional Sense Code and Additional Sense Code Qualifier fields are set to EOM/P detected. The drive will
attempt to complete any subsequent WRITE FILEMARKS, returning a CHECK CONDITION status in each case.
If the drive encounters the physical EOM when attempting a WRITE FILEMARKS, CHECK CONDITION status is
returned. Within the Sense data, the EOD and Valid bits are set and the Sense Key field is set to VOLUME
OVERFLOW. The Information fields contain the residue count and the Additional Sense Code and Additional Sense
Code Qualifier fields are set to EOM/P Detected. The tape is physically positioned at EOM/P.
6-110
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7.Drive Diagnostics
7. Drive Diagnostics
This clause deals with the diagnostics supported by the SDX-800V. Each diagnostic is described in detail and
possible error codes are discussed.
7.1. Overview
The diagnostic firmware for this product is designed to achieve the following objectives:
- Isolate hardware failures
- Verify the media
- Provide predictive information which can lead to the early detection of potential problems
- Provide remote support capabilities
- Satisfy manufacturing testing needs
How these objectives are achieved:
- Fault isolation is achieved by providing an extensive set of diagnostic tests.
- Media verification is achieved by error rate testing and tape logs.
- Predictive data is provided in the form of a tape log and runtime error logs. Logs are maintained within the drive's
RAM, EEPROM and on the AIT cassettes.
- Remote support capability is provided by allowing all tests and test sequences to be initiated via the host interface.
Similarly, all test results are reported back to the host via the interface.
- Manufacturing needs are satisfied by providing unrestricted access to all internal tests.
7.2. Diagnostic Test
This clause describes the Diagnostic Test facilities of the drive. The method for executing tests and receiving test
results from the Host is described and a full list of available tests and possible result messages is given.
Diagnostics can be initiated in several ways:
- Power-on Self Test
- Send Diagnostic command initiating a Self Test
- Send Diagnostic command initiating a specific test or sequence
Each type of Diagnostics will be described in detail.
7.2.1.
Power-on Self Test
Each time power is applied to the drive it will automatically perform a series of diagnostics on itself to insure that the
basic functions of the drive are performing properly. The power-on Self Test sequence is shown below:
Power supply voltage exceeds power-up threshold
61
Main Processor ROM checksum
62
Main Processor Destructive RAM Test
70
SDX-800V Controller Register Test
The following 3 tests are initiated by the Mechanism Controller automatically after power-up and therefore would be
executing in parallel with the tests listed above.
20
Mechanism Controller Microprocessor Test
30
Front Panel Check
79
Data Compression Functions DMA Line Test
71
Buffer RAM Test
If a failure occurs with any of the power-on diagnostic tests the drive will halt with the Status LED flashing.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7-1
7.Drive Diagnostics
If an error is detected during power-up, the drive will return CHECK CONDITION status to the host on the first
command received. The host shall issue a REQUEST SENSE command to determine the cause of the CHECK
CONDITION status. The Sense data returned by the drive will have a Sense Key of 6 (Unit Attention) and the
ASC/ASCQ will be 29 80 (Drive failed power or test or diagnostic). The host can then issue a RECEIVE
DIAGNOSTIC RESULT command to the drive in order to identify the specific diagnostic test that failed and the
failure error code.
The drive should be checked by a qualified person to determine what action should be taken.
7.2.2.
SEND DIAGNOSTIC command - Self Test
The host computer can request that the drive perform a Self Test on itself to verify that it is functioning normally. The
Self Test bit in the SEND DIAGNOSTIC command is set to one, and the Parameter List Length is ZERO. This
initiates the Self Test Diagnostic which is similar to the Power-on self test except that non-destructive RAM testing is
substituted for the destructive RAM tests.
If an error is detected during this test, the drive will return CHECK CONDITION status to the host. The host shall
issue a REQUEST SENSE command to determine the cause of the CHECK CONDITION status. The Sense data
returned by the drive will have a Sense Key of 4 (Hardware Error) and the ASC/ASCQ will be 44 00 (Internal Target
Failure). The host can then issue a RECEIVE DIAGNOSTIC RESULT command to the drive in order to identify the
specific diagnostic test that failed and the failure error code.
The drive should be checked by a qualified person to determine what action should be taken.
7.2.3.
SEND DIAGNOSTIC command - Individual Test
The SEND DIAGNOSTIC command also provides the capability to run each of the diagnostic tests individually. In
order to identify the diagnostic test to be executed, the SEND DIAGNOSTIC command should be configured as
follows:
Self Test bit = 0
Device Off-line bit = 0
Unit Off-line bit = 1
Parameter List Length = 5 or 9 (see below)
The SDX-800V supports both the SCSI-1 and SCSI-2 implementations of the SEND DIAGNOSTIC command.
In the SCSI-1 mode, the Page Format (PF) bit is ZERO and the Parameter List Length is 5, the Parameter List in this
case is 5 bytes long and will be of the form:
Table 7-1: SEND DIAGNOSTIC Parameter - SCSI-1
Bit
Byte
0
1
2
3
4
7-2
7
Break
6
5
4
3
2
1
0
Diagnostic Test number
Loop Count
Parameter A
Parameter B
Parameter C
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7.Drive Diagnostics
In SCSI-2 mode, the Page Format (PF) bit is one, and the Parameter List Length is 9, the Parameter List in this case
is 9 bytes long and will be of the form:
Table 7-2: SEND DIAGNOSTIC Parameters - SCSI-2
Bit
Byte
0
1
2
3
4
5
6
7
8
7
6
5
(MSB)
4
3
2
1
0
Page Code (81h)
Reserved
Page Length (00 05h)
(LSB)
Break
Diagnostic Test Number
Loop Count Identifier
Parameter A
Parameter B
Parameter C
Break: Indicates how to terminate the loop count should an error occur.
0 = stop on first error
1 = do not stop on error
Loop Count Identifier: The number of times that the test should be repeated before status is returned.
0 = run once
1 = run once
2 = run 10 times
3 = run 100 times
4 = run 1000 times
Parameters A, B, C: Any additional parameters required to fully define the diagnostic test. These parameters are
unused and shall be 00h.
7.2.4.
Diagnostic Test Number Summary
The following is a list of the diagnostic capabilities of the SDX-800V. The Test Availability Code indicates if a
particular test can be executed by the Host computer or is executed during Power-on diagnostics (or both). The drive
also supports three types of diagnostics:
1. Individual Tests - Self contained modules designed to test a particular function of drive
2. Sequences - Automatic execution of a series of individual tests
3. Exercisers - Verification of a major function of the drive such as Read, Write, Search, etc.
The Diagnostic Test Number for each Test, Sequence or Exerciser is shown in the first column.
Test Availability Codes
P ─ Power–on Self–test
H ─ Host Diagnostics
PH ─ both
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7-3
7.Drive Diagnostics
Sequence Test
00
Reset Sequence (61, 63, 71,72, 77-79, 80, 81, 30)
H
Mechanism Controller Kernel Test
20
Mechanism Controller Microprocessor Test
P
Main Processor Kernel Test
61
62
Main Processor ROM checksum
Main Processor Destructive RAM Test
P
P
71
79
80
Buffer RAM Test
Data Compression Functions and DMA Line Test
Internal Message Bus Test
PH
PH
PH
7.2.5.
RECEIVE DIAGNOSTIC RESULT command
Drive Test
Whenever a diagnostic test is executed, the drive automatically prepares a diagnostic test result that can be returned
to the host computer when a RECEIVE DIAGNOSTIC RESULT command is issued.
If the PF bit in the SEND DIAGNOSTIC command was sent to one, the diagnostic test result will be preceded by a
four byte header which will be of the form:
Table 7-3: RECEIVE DIAGNOSTIC RESULT - SCSI-2 Header
Bit
Byte
0
1
2
3
7
6
5
4
3
2
1
0
Page Code (81h)
Reserved
Page Length (00 05h)
(MSB)
(LSB)
Regardless of the PF bit in the SEND DIAGNOSTIC command, the five bytes of diagnostic test result information will
be of the form:
Table 7-4: RECEIVE DIAGNOSTIC RESULT
Bit
Byte
0
1
2
3
4
7
6
Reset
Error
Time
Re-Sync
5
4
3
Reserved
2
1
0
Error Set
Error Code
Result A
Result B
Diagnostic Test Number
Reset error: This bit is set when an error occurs during power-on self-test.
Time Re-Sync: This bit indicates that the time stamp saved with the error log has no relation to that of the previous
entry. It is only set by the logging routine within the data buffer as an error is logged.
7-4
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7.Drive Diagnostics
Error set: Two set of error codes exist. The definition of the error is dependent upon when set is taken from as
follows:
0 - Runtime errors
2 - Drive diagnostic errors
Error code: Error codes for each error set are described in clause 7.2.6
Result A: Typically this byte indicates the logical sub-assembly that failed:
1 - Drive Mechanism
2 - Drive Circuitry
Note: This byte has alternate meanings with some diagnostics. Refer to clause 7.2.6.
Result B: Typically this byte is unused however, this byte has alternate meanings with some diagnostics. Refer to
clause 7.2.6.
Test number: This is the test number to which the message applies (if a test fails within a sequence, the individual
test number will be returned).
Note: Diagnostic test 30 (Front Panel Check) will light each of the front panel LEDs so that the operator can verify
that the LEDs are functioning. There is no error detection within the drive for this test and therefore the Error Code,
Result A and Result B will always be ZERO.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7-5
7.Drive Diagnostics
7.2.6.
Diagnostics Results Reference
The following list of error codes are supported by the drive.
Error Sets - Error Code
Error Set 0 - Runtime Errors
00h
01h
02h
04h
05h
07h
08h
09h
0Ah
0Bh
10h
11h
12h
13h
14h
22h
28h
29h
2Ah
2Ch
2Dh
2Eh
30h
32h
33h
35h
36h
38h
39h
3Ah
3Fh
44h
45h
48h
49h
4Ah
4Fh
51h
52h
53h
54h
55h
57h
59h
5Ah
5Bh
5Dh
5Fh
7-6
NO ERROR
NO TAPE
OFF-LINE WITH TAPE
ILLEGAL COMMAND
BOT ENCOUNTERED
WRITE PROTECTED
PARTITION SIZE ERROR
PRE-RECORDED TAPE
INVALID FORMAT FOR READ
NOT AT BOT
INVALID TEST NUMBER
INVALID PARAMETER
INVALID TEST WITH CARTRIDGE
INVALID TEST
TEST NOT ACCESSIBLE DUE TO SELF TEST
ERROR
BLANK AT BOT
SYSTEM AREA READ CONDITION ERROR
SYSTEM AREA READ APPROACH TIMEOUT
SYSTEM AREA READ OVER POSITION
SYSTEM AREA WRITE CONDITION ERROR
SYSTEM AREA APPEND TIMEOUT
SYSTEM AREA APPEND OVER POSITION
EOD ENCOUNTERED
BLANK ENCOUNTERED
HEAD CLOGGED on READ
ECC UN CORRECTABLE
READ APPROACH TIMEOUT
READ OVER POSITION
READ FORMAT ERROR
READ FRAME OVER
READ TIMEOUT
SEARCH APPROACH TIMEOUT
SEARCH ECC UNCORRECTABLE
SEARCH OVER POSITION
SEARCH FORMAT ERROR
SEARCH FRAME OVER
SEARCH TIMEOUT
TOO MANY REWRITE
WRITE CONDITION ERROR
HEAD CLOGGED ON WRITE
EOM DETECTED ON WRITE
APPEND TIME-OUT
APPEND OVER POSITION
ATF UNLOCK
APPEND DBP NG
FORMAT TIMEOUT
WRITE FRAME OVER
WRITE TIMEOUT
67h
68h
6Bh
6Dh
75h
77h
78h
79h
7Ah
7Bh
7Ch
7Dh
80h
81h
82h
83h
84h
85h
86h
87h
88h
8Eh
90h
91h
92h
93h
94h
A0h
A3h
A4h
A5h
B0h
B2h
B8h
BEh
BFh
C0h
C1h
C2h
CCh
CDh
CEh
CFh
E0h
E4h
E5h
E6h
E7h
E9h
ASDA FRAME OVER
ECC FRAME OVER
MC COMMAND REJECT ERROR
MC MISC ERROR
DIAGNOSTIC FAILURE
FBI COMMAND TIME-OUT
DMA Parity Error SCSI Controller
DMA Parity Error Interface Buffer Controller
DMA Parity Error Data Compression Controller
DMA Parity Error Tape Formatter Controller
DRAM Parity Error Interface Buffer Controller
DRAM Parity Error Tape Formatter Controller
LOADING TIME-OUT
FRONT LOADING TIME-OUT
CAPSTAN TIME-OUT
DRUM TIME-OUT
REEL TIME-OUT
ILLEGAL ENCODER PATTERN
EEPROM IN THE DRIVE IS NG
TENSION REGULATOR NG
DC DC CONVERTER NG
SNAPPED TAPE
FEW S REEL FG
FEW T REEL FG
HIGH TEMPERATURE
DEW SENSED
TAPE SLACK
DRUM SPEED OUT OF RANGE
DRUM PHASE UNLOCKED
DRUM NO FG
DRUM NO PG
CAPSTAN TERM OUT OF RANGE SHORT
CAPSTAN TERM OUT OF RANGE LONG
TATF ERROR
MC INITIALIZATION ERROR
MC COMMUNICATION ERROR
UNKNOWN BAT ENTRY
Illegal Format
FORMAT DISCONTINUITY
UNEXPECTED EOR
ILLEGAL SKIP COUNT
ALDC ERROR
ILLEGAL DMA COMPLETION
DMA IS ABORTED
FMK ENCOUNTERED
SMK ENCOUNTERED
BOP ENCOUNTERED
EOD ENCOUNTERED
DMA ERROR
SONY AIT-3Ex drive SDX-800V series Ver.1.1
7.Drive Diagnostics
F0h
F1h
F2h
F4h
F7h
F8h
F9h
FAh
FBh
FCh
FDh
FEh
MIC BROKEN ERROR
MIC NOT SUPPORTED
RFD ERROR
CLEANING EOM ENCOUNTERED
APPEND POSITION ERROR
ILLEGAL TAPE
ILLEGAL FIRMWARE
UNDEFINED TAPE
FIRMWARE MISCELLANEOUS ERROR
FIRMWARE VERIFICATION FAILURE
FIRMWARE TAPE FAILURE
FIRMWARE REPROGRAMMING FAILURE
SONY AIT-3Ex drive SDX-800V series Ver.1.1
Error set 2 - Diagnostic error
02h
MAIN PROCESSOR ROM CHECK SUM TEST
FAILURE
06h
MAIN PROCESSOR DESTRUCTIVE RAM
TEST FAILURE
07h
MAIN PROCESSOR NON DESTRUCTIVE
RAM TEST FAILURE
12h
BUFFER RAM TEST FAILURE
14h
INTERNAL MESSAGE BUS TEST FAILURE
15h
DATA COMPRESSION DMA LINE TEST
FAILURE
MECHANISM CONTROLLER
MICROPROCESSOR TEST FAILURE
20h
7-7
7.Drive Diagnostics
This page intentionally left blank.
7-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
8. APPENDIX A: ASC & ASCQ Alphabetic Order
8. APPENDIX A: ASC & ASCQ Alphabetic Order
ASC and ASCQ Assignments
Alphabetic Order
BYTE
12
13
DESCRIPTION
55
06
AUXILIARY MEMORY OUT OF SPACE
11
12
AUXILIARY MEMORY READ ERROR
0C
0B
AUXILIARY MEMORY WRITE ERROR
00
04
BEGINNING-OF-PARTITION/MEDIUM DETECTED
14
04
BLOCK SEQUENCE ERROR
83
87
BROKEN MIC IS LOADED IN AIT MODE
30
02
CANNOT READ MEDIUM - INCOMPATIBLE FORMAT
30
05
CANNOT WRITE MEDIUM - INCOMPATIBLE FORMAT
52
00
CARTRIDGE FAULT
30
07
CLEANING FAILURE
30
03
CLEANING CARTRIDGE INSTALLED
4A
00
COMMAND PHASE ERROR
2C
00
COMMAND SEQUENCE ERROR
4B
00
DATA PHASE ERROR
70
NN
DECOMPRESSION EXCEPTION SHORT ALGORITHM ID OF NN
29
80
DRIVE FAILED POWER-ON TEST OR DIAGNOSTIC - (SONY Unique)
00
05
END-OF-DATA DETECTED
14
03
END-OF-DATA NOT FOUND
00
02
END-OF-PARTITION/MEDIUM DETECTED
5D
00
FAILURE PREDICTION THRESHOLD EXCEEDED
00
01
FILEMARK DETECTED
30
00
INCOMPATIBLE MEDIUM INSTALLED
11
08
INCOMPLETE BLOCK READ
48
00
INITIATOR DETECTED ERROR MESSAGE RECEIVED
55
04
INSUFFICIENT REGISTRATION RESOURCES
44
00
INTERNAL TARGET FAILURE
3D
00
INVALID BITS IN IDENTIFY MESSAGE
20
00
INVALID COMMAND OPERATION CODE
24
00
INVALID FIELD IN CDB
26
00
INVALID FIELD IN PARAMETER LIST
49
00
INVALID MESSAGE ERROR
04
01
LOGICAL UNIT IS IN PROCESS OF BECOMING READY
04
10
LOGICAL UNIT NOT READY, AUXILIARY MEMORY NOT ACCESSIBLE
04
00
LOGICAL UNIT NOT READY, CAUSE NOT REPORTABLE
SONY AIT-3Ex drive SDX-800V series Ver.1.1
8-1
8. APPENDIX A: ASC & ASCQ Alphabetic Order
25
00
LOGICAL UNIT NOT SUPPORTED
15
01
MECHANICAL POSITIONING ERROR
3F
11
MEDIUM AUXILIARY MEMORY ACCESIBLE
31
00
MEDIUM FORMAT CORRUPTED
3A
00
MEDIUM NOT PRESENT
3A
04
MEDIUM NOT PRESENT_MEDIUM AUXILIARY MEMORY ACCESIBLE
43
00
MESSAGE ERROR
3F
01
MICROCODE HAD BEEN CHANGED
2A
01
MODE PARAMETERS CHANGED
00
00
NO ADDITIONAL SENSE INFORMATION
28
00
NOT READY TO READY TRANSITION
(MEDIUM MAY HAVE CHANGED)
4E
00
OVERLAPPED COMMANDS ATTEMPTED
1A
00
PARAMETER LIST LENGTH ERROR
26
01
PARAMETER NOT SUPPORTED
26
02
PARAMETER VALUE INVALID
2A
00
PARAMETERS CHANGED
47
00
PARITY ERROR
03
00
PERIPHERAL DEVICE WRITE FAULT
27
04
PERSISTENT WRITE PROTECT
15
02
POSITIONING ERROR DETECTED BY READ OF MEDIUM
29
00
POWER ON, RESET, OR BUS DEVICE RESET OCCURRED
2A
05
REGISTRATION PREEMPTED
2A
03
RESERVATION PREEMPTED
3B
08
REPOSITION ERROR
39
00
SAVING PARAMETER NOT SUPPORTED
45
00
SELECT OR RESELECT FAILURE
00
03
SETMARK DETECTED
33
00
TAPE LENGTH ERROR
11
00
UNRECOVERED READ ERROR
50
00
WRITE APPEND ERROR
0C
00
WRITE ERROR
27
00
WRITE PROTECTED
8-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
9. APPENDIX B: ASC & ASCQ Numeric Order
9. APPENDIX B: ASC & ASCQ Numeric Order
ASC and ASCQ Assignments
Numeric Order
BYTE
12
13
DESCRIPTION
00
00
NO ADDITIONAL SENSE INFORMATION
00
01
FILEMARK DETECTED
00
02
END-OF-PARTITION/MEDIUM DETECTED
00
03
SETMARK DETECTED
00
04
BEGINNING-OF-PARTITION/MEDIUM DETECTED
00
05
END-OF-DATA DETECTED
03
00
PERIPHERAL DEVICE WRITE FAULT
04
00
LOGICAL UNIT NOT READY, CAUSE NOT REPORTABLE
04
01
LOGICAL UNIT IS IN PROCESS OF BECOMING READY
04
10
LOGICAL UNIT NOT READY, AUXILIARY MEMORY NOT ACCESSIBLE
0C
00
WRITE ERROR
0C
0B
AUXILIARY MEMORY WRITE ERROR
11
00
UNRECOVERED READ ERROR
11
08
INCOMPLETE BLOCK READ
11
12
AUXILIARY MEMORY READ ERROR
14
03
END-OF-DATA NOT FOUND
15
01
MECHANICAL POSITIONING ERROR
15
02
POSITIONING ERROR DETECTED BY READ OF MEDIUM
1A
00
PARAMETER LIST LENGTH ERROR
20
00
INVALID COMMAND OPERATION CODE
24
00
INVALID FIELD IN CDB
25
00
LOGICAL UNIT NOT SUPPORTED
26
00
INVALID FIELD IN PARAMETER LIST
26
01
PARAMETER NOT SUPPORTED
26
02
PARAMETER VALUE INVALID
27
00
WRITE PROTECTED
27
04
PERSISTENT WRITE PROTECT
28
00
NOT READY TO READY TRANSITION
(MEDIUM MAY HAVE CHANGED)
29
00
POWER ON, RESET, OR BUS DEVICE RESET OCCURRED
29
80
DRIVE FAILED POWER-ON TEST OR DIAGNOSTIC - (SONY Unique)
2A
00
PARAMETERS CHANGED
2A
01
MODE PARAMETERS CHANGED
2A
03
RESERVATION PREEMPTED
SONY AIT-3Ex drive SDX-800V series Ver.1.1
9-1
9. APPENDIX B: ASC & ASCQ Numeric Order
2A
05
REGISTRATION PREEMPTED
2C
00
COMMAND SEQUENCE ERROR
30
00
INCOMPATIBLE MEDIUM INSTALLED
30
02
CANNOT READ MEDIUM - INCOMPATIBLE FORMAT
30
03
CLEANING CARTRIDGE INSTALLED
30
05
CANNOT WRITE MEDIUM - INCOMPATIBLE FORMAT
30
07
CLEANING FAILURE
31
00
MEDIUM FORMAT CORRUPTED
33
00
TAPE LENGTH ERROR
39
00
SAVING PARAMETER NOT SUPPORTED
3A
00
MEDIUM NOT PRESENT
3A
04
MEDIUM NOT PRESENT_MEDIUM AUXILIARY MEMORY ACCESIBLE
3B
08
REPOSITION ERROR
3D
00
INVALID BITS IN IDENTIFY MESSAGE
3F
01
MICROCODE HAD BEEN CHANGED
3F
11
MEDIUM AUXILIARY MEMORY ACCESIBLE
43
00
MESSAGE ERROR
44
00
INTERNAL TARGET FAILURE
45
00
SELECT OR RESELECT FAILURE
47
00
PARITY ERROR
48
00
INITIATOR DETECTED ERROR MESSAGE RECEIVED
49
00
INVALID MESSAGE ERROR
4A
00
COMMAND PHASE ERROR
4B
00
DATA PHASE ERROR
4E
00
OVERLAPPED COMMANDS ATTEMPTED
50
00
WRITE APPEND ERROR
52
00
CARTRIDGE FAULT
55
04
INSUFFICIENT REGISTRATION RESOURCES
55
06
AUXILIARY MEMORY OUT OF SPACE
5D
00
FAILURE PREDICTION THRESHOLD EXCEEDED
70
NN
DECOMPRESSION EXCEPTION SHORT ALGORITHM ID OF NN
83
87
BROKEN MIC IS LOADED IN AIT MODE
9-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
10.Appendix C
10. APPENDIX C: SCSI Commands (Op Code Order)
The following is a list of the supported SCSI Commands and page index:
PARA
SCSI COMMAND
OP CODE
PAGE
6.28
TEST UNIT READY
00h
6-104
6.24
REWIND
01h
6-97
6.22
REQUEST SENSE
03h
6-87
6.14
READ BLOCK LIMITS
05h
6-71
6.12
READ
08h
6-65
6.29
WRITE
0Ah
6-105
6.32
WRITE FILEMARKS
10h
6-110
6.27
SPACE
11h
6-101
6.2
INQUIRY
12h
6-3
6.7
MODE SELECT (6)
15h
6-38
6.23
RESERVE UNIT (6)
16h
6-95
6.18
RELEASE UNIT (6)
17h
6-79
6.1
ERASE
19h
6-2
6.8
MODE SENSE (6)
1Ah
6-56
6.3
LOAD/UNLOAD
1Bh
6-8
6.17
RECEIVE DIAGNOSTIC RESULTS
1Ch
6-77
6.25
SEND DIAGNOSTIC
1Dh
6-98
6.11
PREVENT ALLOW MEDIUM REMOVAL
1Eh
6-64
6.4
LOCATE
2Bh
6-10
6.16
READ POSITION
34h
6-75
6.31
WRITE BUFFER
3Bh
6-108
6.15
READ BUFFER
3Ch
6-72
6.19
REPORT DENSITY SUPPORT
44h
6-81
6.5
LOG SELECT
4Ch
6-11
6.6
LOG SENSE
4Dh
6-13
6.7
MODE SELECT (10)
55h
6-38
6.23
RESERVE UNIT (10)
56h
6-95
6.18
RELEASE UNIT (10)
57h
6-79
6.8
MODE SENSE (10)
5Ah
6-56
6.9
PERSISTENT RESERVE IN
5Eh
6-59
6.10
PERSISTENT RESERVE OUT
5Fh
6-62
6.13
READ ATTRIBUTE
8Ch
6-67
6.30
WRITE ATTRIBUTE
8Dh
6-106
6.21
REPORT LUNS
A0h
6-86
SONY AIT-3Ex drive SDX-800V series Ver.1.1
10-1
10.Appendix C
6.26
SET DEVICE IDENTIFIER
A4h
6-100
6.20
REPORT DEVICE IDENTIFIER
A3h
6-85
10-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
11.Appendix D
11. APPENDIX D: ASC & ASCQ for AIT (Sony Unique)
ASC and ASCQ Assignments for AIT drive (Sony Unique)
Numeric Order
BYTE
12
83h
83h
83h
83h
83h
83h
83h
83h
83h
83h
83h
83h
83h
83h
13
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
83h
DESCRIPTION
Reserved
MIC Header Error
No MIC Detected
MIC Checksum Error
MIC out of memory
No Data Body Detected in the MIC
MIC Read Error
No Cassette Detected
MIC is not formatted yet
MIC Write Fault
Requested address is write protected on the MIC
MIC is broken
MIC format type is undefined
MIC capacity field indicates illegal value. Acceptable value is 2Kbytes, 4Kbytes, 8Kbytes. The
drive will handle the MIC is 2Kbytes, when capacity field indicates illegal value.
0Eh
:
Reserved
83h
83h
83h
83h
83h
83h
7Fh
80h
81h
82h
83h
84h
83h
83h
83h
83h
83h
83h
86h
87h
88h
89h
8Ah
8Bh
83h
83h
83h
83h
83h
96h
97h
98h
99h
9Ah
83h
83h
83h
9Bh
9Ch
9Dh
Partition count exceeded
Reserved
Reserved
MIC is exist but is not used
Reserved
Broken MIC is loaded in AIT mode
Reserved
User Volume Note Size mismatch
User Partition Note Size mismatch
Reserved
:
83h
Current Partition is not the last partition.
Cannot append the new partition, because the remaining capacity too short.
Cannot delete partition, because the indicated partition number is not appropriate.
Encounter the EOT while creating the new partition, append partition command is not
completed. (If a drive misleads the tape capacity by some reason, format command will be failed
on the way. In case of the situation, the Last Partition Number must hold the Last Valid Partition
Number, because it is reasonable and time saving. )
Cannot format tape because real tape capacity is exceeded.
Cannot append new partitions because the MIC is out of memory.
Reserved
FFh
SONY AIT-3Ex drive SDX-800V series Ver.1.1
11-1
11.Appendix D
This page intentionally left blank.
11-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
12. APPENDIX E: Medium Auxiliary Memory Attribute
12.1. INTRODUCTION
This section will outline the design specifications for the implementation of selected Medium
Auxiliary Memory (MAM) attributes.
12.2. OVERVIEW
An increasing number of media types are incorporating small memory components into their
products. The creation and acceptance of the “Proposed Addition of Read and Write Attribute
Commands to SPC-2” (AM document) provides a uniform method to access the data stored on
the Medium Auxiliary Memory. This section will provide details on using MAM with this product.
12.3. REFERENCE
SCSI Primary Commands – 3 (SPC-3) Revision 03
Sections 5.9, 7.14, 7.31 and 8.3.
SCSI Stream Commands SSC-2 Revision 07
SCSI-3 Media Changer Commands –2 Revision 02
12.4. SCSI COMMAND REQUIREMENTS
12.4.1. LOAD COMMAND
The tape device supports the Load/Unload 1Bh command with the additional features as described
below.
This command specification is the process of getting the medium loaded into the logical unit but not
positioned for access:
A Load bit of one and a HOLD bit of one indicates, if the medium has not been moved into the
logical unit, the medium shall be moved in, but not positioned for access. The EOT and RETEN
bits shall be set to zero. Following successful completion, the device server shall return GOOD
STATUS. If both the medium and the device server support MAM, the device server shall
generate a unit attention condition for all initiators with the additional sense code and additional
sense code qualifier set to MEDIUM AUXILIARY MEMORY ACCESSABLE.
This command specification is the process of unthreading a medium when it is already loaded into
the logical unit:
A LOAD bit of zero and a HOLD bit of one indicates, if the medium is in the logical unit, the
medium shall be positioned as specified by the RETEN and EOT bits or shall be unthreaded
(whichever is appropriate for the medium type) but shall not be ejected. Following successful
completion, the device server shall generate a unit attention condition for all initiators with
additional sense code and additional sense code qualifier set to MEDIUM AUXILIARY
MEMORY ACCESSIBLE.
If this load is performed, then the LOAD COUNT Attribute in the MAM should not be increased.
This new implementation will not have a negative effect on logical units that do not support this
command specification. The default value for the hold bit has been zero, since it was reserved in the
prior specifications.
In order to have the medium threaded, another load command must be issued.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-1
12. Appendix E
Note: The above information has been taken from an unofficial version of the SCSI-3 Stream
Commands. In case of any conflict, the published ANSI standard prevails.
Table 12-1
Bit
7
Byte
0
1
2
3
4
5
6
5
Reserved
4
3
2
OPERATION CODE ( 1Bh)
Reserved
Reserved
Reserved
HOLD
EOT
CONTROL
1
0
IMMED
RETEN
LOAD
Note: For non-memory component media, the device firmware ignores the above command and
threads the tape in order to provide the required data.
12.5. NEW COMMANDS
A MAM attribute is represented in a format described in the next section and is composed of:
1.
2.
3.
4.
5.
An attribute identifier,
An attribute format code,
A bit indicating whether the identified attribute is read only,
An attribute length specifying the number of bytes in the identified attribute value, and
The value of the identified attribute.
There are three types of attribute (table 12-2)
Table 12-2: Types of MAM Attributes
Attribute
Type
Attribute Source
Example
Medium
Permanently stored in the
medium auxiliary memory
during manufacture.
Maintained by the
device server
Maintained by the
application client.
Media
Serial
Number
Load
Count
Backup
date
Device
Host
Readable with
READ
ATTRIBUTE
Yes
Writeable
with WRITE
ATTRIBUTE
No
Yes
No
Yes
Yes
Depending on that attribute type, attributes have the states shown in table 12-3
12-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
Table 12-3: MAM Attribute states
Attribute Type
Medium or
Device
Attribute State
Read Only
Unsupported
Host
Nonexistent
Read/Write
Description
An application server may read the contents of the
attribute with the READ ATTRIBUTE command, but
an attempt to clear or change the attribute using the
WRITE ATTRIBUTE command shall result in the
command being terminated with a CHECK
CONDITION status. When the READ ONLY bit is
one, the attribute is in the read only state.
The device server does not support the attribute and
shall not return it in response to a READ ATTRIBUTE
command.
A host attribute does not exist in the medium auxiliary
memory until a WRITE ATTRIBUTE command
creates it.
The attribute has been created using the WRITE
ATTRIBUTE command. After the attribute has been
created, the contents may be altered using
subsequent WRITE ATTRIBUTE commands. A
read/write attribute may be returned to be
nonexistent state using a WRITE ATTRIBUTE
command with the attribute length set to zero. When
the READ ONLY bit is zero, the attribute is in the
read/write state.
Read and Write Attribute Commands:
The read (8Ch) and write (8Dh) attribute commands will be implemented follows.
12.6. MEDIUM AUXILIARY MEMORY ATTRIBUTE DATA
Attribute Format
Each medium auxiliary memory attribute shall be communicated between the application client
and device server in the format shown in table 14.0. This format shall be used in the parameter
data for the WRITE ATTRIBUTE command and the READ ATTRIBUTE command. The attribute
format in this standard implies nothing about the physical representation of an attribute in the
medium auxiliary memory.
Table 12-4: MAM ATTRIBUTE Format
Bit
Byte
0
1
2
3
7
6
5
3
2
1
0
(MSB)
ATTRIBUTE IDENTIFIER
READ
ONLY
(MSB)
4
5
4
(MSB)
N
Reserved
ATTRIBUTE LENGTH (n-4)
ATTRIBUTE VALUE
(LSB)
FORMAT
(LSB)
(LSB)
The ATTRIBUTE IDENTIFIER field contains a code value identifying the attribute.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-3
12. Appendix E
The READ ONLY bit indicates whether the attribute is in the read only state. If the READ ONLY
bit is one, the attribute is in the read only state. If the READ ONLY bit is zero, the attribute is in
the read/write state.
The FORMAT field (table 12-5) specifies the format of the data in the ATTRIBUTE VALUE field.
ATTRIBUTES defined by this standard include a requirement for the contents of the FORMAT
field.
Table 12-5: MAM attribute formats
Format
00b
01b
Name
BINARY
ACSII
Description
The ATTRIBUTE VALUE shall contain binary data.
The ATTRIBUTE VALUE field shall contain only graphic codes
(i.e. byte code values 20h through &Eh), shall be left-aligned
placing any unused bytes at the highest offset in the field,
contain 20h (i.e. ASCII space) in any unused bytes.
10b
TEXT
The attribute contains textual data. The character set is as
described in the TEXT LOCALIZATION IDENTIFER attribute.
11b
Reserved
The ATTRIBUTE LENGTH field specifies the length in bytes of the ATTRIBUTE VALUE field.
Attributes defined by this standard include a requirement for the contents of the ATTRIBUTE
LENGTH field.
The ATTRIBUTE VALUE Field contains that current (READ ATTRIBUTE) or desired (WRITE
ATTRBUTE) value of the attribute.
Attribute identifier values
Attribute identifier values overview
The values in the ATTRIBUTE IDENTIFIER field are assigned according to the attribute type
and whether the attribute is standard or vendor unique (table 12-6).
Table 12-6: MAM attribute identifier range assignments
Attribute Identifiers
0000h – 03FFh
0400h – 07FFh
0800h – 0BFFh
0C00h – 0FFFh
1000h – 13FFh
1400h – 17FFh
1800h – FFFFh
Attribute Type
Device
Medium
Host
Device
Medium
Host
Reserved
Standardization
Yes
Yes
Yes
Vendor Unique
Vendor Unique
Vendor Unique
Device servers shall accept and process a WRITE ATTRIBUTES command containing
standardized host type attribute identifier values (i.e. 0800h-0BFFh) or vendor unique host type
attribute identifier values (i.e., 1400h-17FFh). Standardized host type attribute identifier values
may be checked for conformance to the requirements described later.
Standard device type attributes
Device types attributes (table 12-7) shall be maintained and updated by the device server when
the medium and associated medium auxiliary memory are present. All supported medium type
attributes shall have a status of read only.
12-4
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
Table 12-7: Device Common Attributes
ID
0000h
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h-0209h
020Ah
020Bh
020Ch
020Dh
020Eh – 021Fh
0220h
0221h
0222h
0223h
0224h – 033Fh
0340h
0341h
0342h – 03FFh
Attribute Name
REMAINING CAPACITY IN PARTITION
MAXIMUM CAPACITY IN PARTITION
TAPEALERT FLAGS
LOAD COUNT
MAM SPACE REMAINING
ASSIGNING ORGANISATION
FORMATTED DENSITY CODE
INITIALIZATION COUNT
Reserved
DEVICE MAKE/SERIAL NUMBER AT LAST LOAD
DEVICE MAKE/SERIAL NUMBER AT LOAD - 1
DEVICE MAKE/SERIAL NUMBER AT LOAD - 2
DEVICE MAKE/SERIAL NUMBER AT LOAD - 3
Reserved
TOTAL MBYTES WRITTEN IN MEDIUM LIFE
TOTAL MBYTES READ IN MEDIUM LIFE
TOTAL MBYTES WRITTEN IN CURRENT IN CURRENT /LAST
LOAD
TOTAL MBYTES READ IN CURRENT IN CURRENT /LAST LOAD
Reserved
MEDIUM USAGE HISTORY
PARTITION USAGE HISTORY
#Bytes
8
8
8
8
8
8
1
2
Format
Binary
Binary
Binary
Binary
Binary
ASCII
Binary
Binary
40
40
40
40
ASCII
ASCII
ASCII
ASCII
8
8
8
Binary
Binary
Binary
8
Binary
90
60
Binary
Binary
0000h REMAINING CAPCACITY IN PARTITION and 0001h MAXIMUM CAPACITY IN PARTITION: Are Native
capacities assuming no data compression for the specified medium partition. These values are expressed in
increments of 1,048,576 bytes (i.e. a value of one means 1,048,576 bytes, two means 2,097,152 bytes, etc).
0002h TAPEALERT FLAGS provides a means of reporting the state of the Tape Alert flags for the previous load of
the medium. Each Tape Alert flag occupies one bit (Flag 1 = MSB Byte 1; Flag 64 = LSB, Byte 8). The bits specify all
the Tape Alert flags that were set during the previous load. (I.e. the bits are “sticky” for the load).
003h LOAD COUNT: Indicates how many times this medium has been fully loaded. This attribute should not be reset
by any action of the device server.
0004h MAM SPACE REMAINING: Indicates the space currently free in the medium auxiliary memory. The total
medium auxiliary memory capacity is reported in the MAM CAPACITY attribute.
0005h ASSIGNING ORGANISATION field data identifies the organization responsible for the specifications defining
the values in the formatted DENSITY CODE attribute. The ASSIGNING ORGANIZATION field should contain a
value listed in the vendor identification list. The use of specific vendor identification, other than the one associated
with the device is allowed.
Note: It is intended that this field provide a unique vendor identification of the FORMATTED DENSITY CODE
attribute. In the absence of a formal registration procedure, T10 maintains a list of known vendor identification codes
in use. Vendors are requested to voluntarily submit their identification codes to T10 to prevent duplication of codes.
0006h FORMATTED DENSITY CODE provides information about the tape format for the user.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-5
12. Appendix E
0007h INITIALIZATION COUNT: Indicates the number of times that a device server has logically formatted the
medium. This figure is cumulative over the life of the medium and shall never be reset.
020Ah, 020Bh, 020Ch, 020Dh DEVICE VENDOR/SERIAL NUMBER AT LAST LOAD, DEVICE VENDOR/SERIAL
NUMBERAT LOAD – 1, DEVICE VENDOR/SERIAL NUMBER AT LOAD – 2 AND DEVICE VENDOR/SERIAL
NUMBER AT LOAD –3:
Give a rolling history of the last four device servers in which the medium has been loaded. The format of the
attributes is shown in table 12-8
Table 12-8: DEVICE VENDOR/SERIAL NUMBER attribute format
Bit
Byte
0
7
8
39
7
(MSB)
6
5
4
3
2
1
0
VENDOR IDENTIFICATION
(LSB)
(MSB)
PRODUCT SERIAL NUMBER
(LSB)
The VENDOR IDENTIFICATION field shall be the same value returned in the standard INQUIRY data.
The PRODUCT SERIAL NUMBER field contains a vendor unique serial number. If the product serial number is not
available, the PRODUCT SERIAL NUMBER field shall contain ASCII spaces (20h).
0220h TOTAL MBYTES WRITTEN IN MEDIUM LIFE and 0221h TOTAL MBYTES READ IN MEDIUM LIFE: Indicate
the total number of data bytes that are transferred to or from the medium surface, after any data compression has
been applied, over the entire medium life. These values are cumulative and shall never be reset. These values are
expressed in increments of 1,048,576 bytes (i.e. a value of one means 1,048,576 bytes, two means2, 097,152 bytes,
etc).
0222h TOTAL MBYTES WRITTEN IN CURRENT/LAST LOAD AND 0223h TOTAL MBYTES READ IN
CURRENT/LAST LOAD: Indicate the total number of data bytes that are transferred to or from the medium surface,
after any data compression has been applied, during the current load if the medium is currently loaded, or the last
load if the medium is currently unloaded. The device server should reset these attributes to zero when the medium is
loaded. These values are expressed in increments of 1,048,576 bytes
(I.e. a value of one means 1,048,576 bytes, two means 2,097,152 bytes, etc).
0340h MEDIUM USAGE HISTORY: Provides statistical counters (table 12-9) for the entire medium. The value in
each field is the sum for all partitions. If a field is not used it should be set to zero.
12-6
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
Table 12-9: Medium USAGE HISTORY attribute format
Bit
Byte
0
5
6
7
(MSB)
(MSB)
11
12
(MSB)
17
18
(MSB)
23
24
(MSB)
29
30
(MSB)
35
36
(MSB)
41
42
(MSB)
47
48
(MSB)
53
54
(MSB)
59
60
(MSB)
65
66
(MSB)
71
72
6
5
4
The CURRENT WRITE RETRIES COUNT
CURRENT AMOUNT OF DATA READ
CURRENT READ RETRIES COUNT
PREVIOUS AMOUNT OF DATA WRITTEN
PREVIOUS WRITE RETRIES COUNT
PREVIOUS AMOUNT OF DATA READ
PREVIOUS READ RETRIES COUNT
TOTAL AMOUNT OF DATA WRITTEN
TOTAL WRITE RETRIES COUNT
TOTAL AMOUNT OF DATA READ
TOTAL READ RETRIES COUNT
(MSB)
(MSB)
83
84
89
(MSB)
2
CURRENT AMOUNT OF DATA WRITTEN
LOAD COUNT
77
78
3
TOTAL CHANGE PARTITION COUNT
TOTAL PARTITION INITIALIZE COUNT
1
0
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
The CURRENT AMOUNT OF DATA WRITTEN field indicates the amount of data physically written to the medium
during this load of the medium. This value is expressed in increments of 1048576 bytes (e.g., a Value of one means
1048576 bytes, two means 2097152 bytes, etc).
The CURRENT WRITE RETRY COUNT field indicates the total number of write retry was performed during this load
of the medium. The exact definition of the error counters is not part of this standard. This counter should not be used
to compare products because the products may define errors differently.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-7
12. Appendix E
The CURRENT AMOUNT OF DATA READ field indicates the amount of data physically read from the medium
during this load of the medium. This value is expressed in increments of 1048576 bytes (e.g., a value of one means
1048576 bytes, two means 2097152 bytes, etc.).
The CURRENT READ RETRIES COUNT field indicates the number of times a read retry was performed during this
load of the medium. The exact definition of the error counters is not part of this standard. This counter should not be
used to compare products because the products may define errors differently.
The PREVIOUS AMOUNT OF DATA WRITTEN field indicates the amount of data physically written to the medium
during the previous medium load. This value is expressed in increments of 1048576 bytes (e.g., a value of one
means 1048576 bytes, two means 2097152 bytes, etc.).
The PREVIOUS WRITE RETRY COUNT field indicates the total number of write retries during the previous medium
load. The exact definition of the error counters is not part of this standard. This counter should not be used to
compare products because the products may define errors differently.
The PREVIOUS AMOUNT OF DATA READ field indicates the amount of data physically read from the medium
during the previous medium load. This value is expressed in increments of 1048576 bytes (e.g., a value of one
means 1048576 bytes, two means 2097152 bytes, etc.).
The PREVIOUS READ RETRIES COUNT field indicates the number of times a read retry was performed during the
previous medium load. The exact definition of the error counters is not part of this standard.
This counter should not be used to compare products because the products may define errors differently.
The TOTAL AMOUNT OF DATA WRITTEN field indicates the total amount of data physically written to the medium
since the last medium format. This value accumulates over the life of the medium but it is reset to zero after a
medium format. This value is expressed in increments of 1048576 bytes (e.g., a value of one means 1048576 bytes,
two means 2097152 bytes, etc.).
The TOTAL WRITE RETRIES COUNT field indicates the total number of write retries since the last medium format.
This count accumulates over the life of the medium but it is reset to zero after a medium format. The exact definition
of the error counters is not part of this standard. This counter should not be used to compare products because the
products may define errors differently.
The TOTAL AMOUNT OF DATA READ field indicates the total amount of data physically read from the medium
since the last medium format. This value accumulates over the life of the medium but it is reset to zero after a
medium format. This value is expressed in increments of 1048576 bytes (e.g., a value of one means 1048576 bytes,
two means 2097152 bytes, etc.).
The TOTAL READ RETRIES COUNT field indicates the number of times a read retry was performed since the last
medium format. The exact definition of the error counters is not part of this standard. This counter should not be used
to compare products because the products may define errors differently. This count accumulates over the life of the
medium but it is reset to zero after a medium format.
The LOAD COUNT field indicates the number of loads since the last medium format. This count accumulates over
the life of the medium but it is reset to zero after a medium format.
The TOTAL CHANGE PARTITION COUNT field indicates the number of times that switches between partitions
have been performed on the medium. This count accumulates over the life of the medium but it is reset to zero after
a medium format.
The TOTAL PARTITION INITIALIZE COUNT field indicates the number of times that any of the partitions on the
medium have been erased. This count accumulates over the life of the medium but it is reset to zero after a medium
format.
PARTITION USAGE HISTORY: Provides statistical counters (table 12-10) for the partition specified by the
PARTITION NUMBER field in the CDB. If a field is not used it should be set to zero.
12-8
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
Table 12-10: PARTITION USAGE HISTORY attribute format
Bit
Byte
0
3
4
7
(MSB)
(MSB)
7
8
(MSB)
11
12
(MSB)
15
16
(MSB)
19
20
(MSB)
23
24
(MSB)
27
28
(MSB)
31
32
(MSB)
35
36
(MSB)
39
40
(MSB)
43
44
(MSB)
47
48
6
5
4
CURRENT WRITE RETIES COUNT
CURRENT AMOUNT OF DATA READ
CURRENT READ RETRIES COUNT
PREVIOUS AMOUNT OF DATA WRITTEN
PREVIOUS WRITE RETRIES COUNT
PREVIOUS AMOUNT OF DATA READ
PREVIOUS READ RETRIES COUNT
TOTAL AMOUNT OF DATA WRITTEN
TOTAL WRITE RETRIES COUNT
TOTAL AMOUNT OF DATA READ
TOTAL READ RETRIES COUNT
(MSB)
LOAD COUNT
(MSB)
CHANGE PARTITION COUNT
55
56
59
(MSB)
2
CURRENT AMOUNT OF DATA WRITTEN
51
52
3
PARTITION INITIALIZE COUNT
1
0
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
The CURRENT AMOUNT OF DATA WRITTEN, CURRENT WRITE RETRY COUNT, CURRENT AMOUNT OF
DATA READ, CURRENT READ RETRIES COUNT, PREVIOUS AMOUNT OF DATA WRITTEN, PREVIOUS
WRITE RETRIES COUNT, PREVIOUS AMOUNT OF DATA READ, PREVIOUS READ RETRIES COUNT, TOTAL
AMOUNT OF DATA WRITTEN, TOTAL WRITE RETRIES COUNT, TOTAL AMOUNT OF DATA READ, TOTAL
READ RETRIES COUNT, LOAD
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-9
12. Appendix E
COUNT fields are as defined for MEDIUM USAGE HISTORY except that they refer to the partition identified by the
CDB PARTITION NUMBER field rather than the whole medium.
The CHANGE PARTITION COUNT field indicates the number of times that switches to the partition specified by the
PARTITION NUMBER field in the CDB have been performed on the medium. This count accumulates over the life of
the medium but it is reset to zero after a medium format.
The PARTITION INITIALIZE COUNT field indicates the number of times that the partition specified by the
PARTITION NUMBER field in the CDB has been initialized. This count accumulates over the life of the medium but
it is reset to zero after a medium format.
Standard Medium Type Attributes
Medium type attributes (table 12-11) are hard coded into the medium auxiliary memory at manufacture time. All
supported medium type attribute shall have a status of read only.
Table 12-11: Medium Common Attributes
ID
0400h
0401h
0402h
0403h
0403h
0405h
0406h
0407h
0408h
0409h
040Ah – 07FFh
Attribute Name
MEDIUM MANUFACTURER
MEDIUM SERIAL NUMBER
MEDIUM LENGTH
MEDIUM WIDTH
ASSIGNING ORGANIZATION
MEDIUM DENSITY CODE
MEDIUM MANUFACTURE DATE
MAM CAPACITY
MEDIUM TYPE
MEDIUM TYPE INFORMATION
Reserved
#Bytes
8
32
4
4
8
1
8
8
1
2
Format
ASCII
ASCII
Binary
Binary
ASCII
Binary
ASCII
Binary
Binary
Binary
The MEDIUM MANUFACTURER: Contains eight bytes of ACSII data identifying the vendor of the media.
Note: It is intended that the MEDIUM MANUFACTURER attribute provide a unique vendor identification of the
manufacturer of the media. In the absence of a formal registration procedure, T10 maintains a list of known vendor
identification codes in use. Vendors are requested to voluntarily submit their identification codes to T10 to prevent
duplication of codes.
The MEDIUM LENGTH attribute specifies the length of the medium in meters. A value of 00h specifies that the
length of the medium is undefined.
The MEDIUM WIDTH attribute specifies the width of the medium supported by this density. This field has units of
tenths of millimeters. The value in this field shall be rounded up if the fractional value of the actual value is greater
than or equal to 0.5. The MEDIUM WIDTH field may vary for a given density depending on the mounted medium. A
value of 00h specifies the width of the medium is undefined.
The ASSIGNING ORGANIZATION attribute identifies the organization responsible for the specifications defining the
values in the MEDIUM DENSITY CODE attribute. The ASSIGNING ORGANIZATION field should contain a value
listed in the vendor identification list.
The MEDIUM SERIAL NUMBER identifies the manufacturer’s serial number for the medium.
The MEDIUM DENSITY CODE is the same numeric DENSITY CODE as reported in the SCSI Mode Block
Descriptor.
12-10
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12. Appendix E
Note: The Formatted Density Code ID 0006h, which is in the Device Common Attribute section and the Medium
Density Code ID 0405h, which is located in the Medium Common Attributes section, will need to be use in some
cases in conjunction in determining the media format.
The MEDIUM MANUFACTURE DATE: Identifies the date of manufacture of the medium. The format is
YYYYMMDD.
The MAM CAPACITY: Is the total capacity of the MAM, in bytes, at manufacture time. It does not indicate the free
space of an unused medium auxiliary memory because some of the medium auxiliary memory space may be
reserved for device-specific use making it inaccessible to the application client.
MEDIUM TYPE and MEDIUM TYPE INFORMATION: Gives information about non-data media and other types of
media. The MEDIUM TYPE INFORMATION attribute is interpreted according to the type of medium indicated by the
MEDIUM TYPE (table 12-12).
Note: Depending of the hardware vendor, this attribute may not be hard coded into the MAM at manufacture time.
Table 12-12: MEDIUM TYPE and MEDIUM TYPE INFORMATION attributes
MEDIUM TYPE
00h
01h
02h-7Fh
80h
81h-FFh
Description
Data medium
Cleaning medium
Reserved
Write-once medium
Reserved
MEDIUM TYPE INFORMATION
Reserved
Maximum number of cleaning cycles permitted
Reserved
Reserved
Reserved
Standard host type attributes
Application clients may sue the WRITE ATTRIBUTE and READ ATTRIBUTE commands to maintain the attributes
shown in table 12-13. All existent host type attributes shall have a status of read/write.
Table 12-13: Host Common Attributes:
ID
0800h
0801h
0802h
0803h
0804h
0805h
0806h
0807h
0808h
0809h
080Ah
080Ch – BFFh
Attribute Name
APPLICATION VENDOR
APPLICATION NAME
APPLICATION VERSION
USER MEDIUM TEXT LABEL
DATE & TIME LAST WRITTEN
TEXT LOCALISATION IDENTIFIER
BARCODE
OWNING HOST TEXTUAL NAME
MEDIA POOL
PARTITION USER TEXT LABEL
LOAD/UNLOAD AT PARTITION
Reserved
#Bytes
8
32
8
160
12
1
32
80
160
16
1
Format
ASCII
ASCII
ASCII
Text
ASCII
Binary
ASCII
TEXT
TEXT
ASCII
Binary
APPLICATION VENDOR: Contains eight bytes of ASCII data identifying the manufacturer of the application client
(e.g. class driver or backup program) that most recently sent a WRITE ATTRIBUTE command to the device server
while this medium auxiliary memory was accessible.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
12-11
12. Appendix E
Note: It is intended that this field provide a unique vendor identification of the vendor who wrote the Host Common
attributes. In the absence of a formal registration procedure, T10 maintains a list of vendor identification codes in use.
Vendors are requested to voluntarily submit their identification codes to T10 to prevent duplication of codes.
APPLICATION NAME: Contains the name of the application client.
APPLICATION VERSION contains the version of the application client.
USER MEDIUM TEXT LABEL: Is the user level identifier for the medium.
DATE & TIME LAST WRITTEN: Contains when the application client last wrote to the MAM. The format for the string
is YYYYMMDDHHMM using a 24-hour time format
Note: The application must update the “Date and Time Last Written” field any time the host attributes contents are
modified.
TEXT LOCALISATION IDENTIFIER: Defines the character set used for attributes with a text format (table 12-14).
Table 12-14: TEXT LOCALISATION IDENTIFIER
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh – 7Fh
80h
81h
82h – FFH
No code specified (ASCII)
ISO/IEC 8859-1 (Europe, Latin America)
ISO/IEC 8859-2 (Eastern Europe)
ISO/IEC 8859-3 (SE Europe/miscellaneous)
ISO/IEC 8859-4 (Scandinavia/Baltic)
ISO/IEC 8859-5 (Cyrillic)
ISO/IEC 8859-6 (Arabic)
ISO/IEC 8859-7 (Greek)
ISO/IEC 8859-8 (Hebrew)
ISO/IEC 8859-9 (Latin 5)
ISO/IEC 8859-10 (Latin 6)
Reserved
ISO/IEC 10646 (UCS-2BE)
ISO/IEC 10646–1 (UTF-8)
Reserved
BARCODE: Is the contents of a barcode associated with the medium in the MAM.
OWNING HOST TEXTUAL NAME: Indicates the host from which that USER MEDIUM TEXT LABEL originates.
MEDIA POOL: Indicates the media pool to which this medium belongs.
PARTITION USER TEXT LABEL: Is a user level identifier for the partition specified by the PARTITION NUMBER
field in the CDB.
LOAD/UNLOAD AT PARTITION: Indicates whether the media can be loaded or unloaded at the Partition specified
by the PARTITION NUMBER field in the CDB. If loads and unloads are enabled for the specified partition, the value
of this parameter shall be one. If loads/unloads are not enabled for the specified partition, the value of this parameter
shall be zero. All other attribute values are reserved. If LOAD/UNLOAD AT PARTITION is disabled, then loads and
unloads are performed at the beginning of the media instead of at the specified partition. If this attribute is in the
nonexistent state then the default action will be to load/unload at the beginning of media
Note:
The 0809h Partition User Text label and 080Ah Load/Unload at Partition Host attributes are optional. Supported, if
the ISV supports multi partitions.
12-12
SONY AIT-3Ex drive SDX-800V series Ver.1.1
13. Appendix F
13. APPENDIX F: AIT based WORM system
13.1. Important Notice
(1) AIT WORM cartridges come equipped with Remote MIC.
(2) A new AIT WORM cartridge can be initialized to use either AIT native mode or DDS emulation mode.
(3) WORM features are supported in AIT tape drives with firmware revision level 0103 or later.
13.2. Write-Protected (WP) Bit in Mode Sense Data
Although the cartridge write-protected activator is permanently set to safe for all WORM media, the WP bit is not
used in WORM mode and will be set to ZERO.
13.3. How to detect a WORM cartridge
The WORM bit of AIT Device Configuration Page (31h) is used to indicate the presence of a WORM media.
Page 31h: AIT Device Configuration Page
Bit
7
6
5
4
3
2
1
0
Byte
0
Reserved
Page Code (31h)
Page Length (8)
1
2
AIT
DEV
ABS
ULP
PNJ
SYSLOG
SPAN (0Ah)
3
4
PRT
MIC
WORM
5
Reserved
Reserved
6
Reserved
7
Reserved
8
Reserved
9
Reserved
WORM
Capable
13.4. How to initialize a WORM cartridge
A new WORM cartridge can be initialized in two ways:
1. Mode Select Operation
2. Write Operation
Note: when using Write Operation (option 2), a new WORM cartridge will be initialized as one partition DDS
emulation mode.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
13-1
13. Appendix F
(i)How to initialize a WORM cartridge to DDS emulation mode.
1Partition
Mode Sense (Page 31h)
Mode Select (Page 31h)
AIT=0
All other bits and bytes are the same as returned with Mode Sense Page 31.
Mode Sense (Page 11h)
Mode Select (Page 11h)
Set IDP bit to 1. Additional Partition=0.
All other bits and bytes are the same as returned with Mode Sense Page 11.
2Parition
Mode Sense (Page 31h)
Mode Select (Page 31h)
AIT=0
All other bits and bytes are the same as returned with Mode Sense Page 31.
Mode Select (Page 11h)
Mode Select (Page 11h)
Set IDP bit to 1. Additional Partition=1. Partition Size=non zero value
All other bits and bytes are the same as returned with Mode Sense Page 11.
13-2
SONY AIT-3Ex drive SDX-800 series Ver.1.1
13. Appendix F
(ii)How to initialize a WORM cartridge to AIT Native mode.
1Partition
Mode Sense (Page 31h)
Mode Select (Page 31h)
AIT=1, DEVICE=1, ABS=1, SysLogAlive=11, Span=0Ah
Mode Select (Page 11h)
Set IDP bit to 1. Additional Partition=0.
13.5. How to handle the WORM cartridge in the drive
1.
DATA READ: There is no restriction when reading data in WORM mode.
2.
DATA WRITE: Any attempt to overwrite existing data will be rejected with a Check Condition status and
sense data.
● Write Projected Error: 07-27-00-07 (Sense Key, ASC, ASCQ, Run-time-error)
● Append Position Error: 03-27-04-f7
The AIT WORM drive will allow write operations when:
(1) Append Write Operation is allowed only at End-Of-Data (EOD) area. Prior to an Append Write Operation,
several commands can be used to position the drive at EOD area:
● Space to EOD (space code 3)
● Space to last record (could be a block, File-mark, Set-mark)
● Locate to last block
● Read until EOD
For example:
Space EOD
Write
Write End
No
Yes
END
SONY AIT-3Ex drive SDX-800V series Ver.1.1
13-3
13. Appendix F
This page intentionally left blank.
13-4
SONY AIT-3Ex drive SDX-800 series Ver.1.1
14. Appendix G
14. APPENDIX G: DISASTER RECOVER
14.1. Overview
This chapter will outline the Disaster Recovery Firmware Specifications for Sony AIT drive and autoloader. This is
applicable only to Windows NT/2000 Operating System. While in Disaster Recovery mode, the drive behaves as a
bootable CDROM device. Using the DR tape image, users will be able to do a complete restore of the system.
14.2. Creating Disaster Recovery Tape
The Disaster Recovery tape must have the CDROM image of the operating system written first on the tape. This
image is formatted in El Torito CDROM Boot Specification.
Disaster Recovery Tape can be created using Veritas BackupExec Software. Please follow instructions of Veritas
BackupExec to create the DR tape. After the tape has been created, the tape must be write-protected to be
considered DR tape.
14.3. Configuring The Drive For Disaster Recovery Operation
To enter DR mode, the tape drive needs to be configured with the following steps:
1. Insert a write-protected DR tape and wait for the drive to complete the loading sequence.
2. Observe the simultaneous flashing all LED. This is the DR standby mode. The drive will remain in this mode
for a period of 15 seconds. Powering down the drive during this 15 seconds window will trigger the DR
mode. The drive will exit the DR standby mode after 15 seconds and resume normal mode of operation. A
SCSI reset will force the drive to exit the DR standby mode and service the SCSI reset.
3. Upon power up, the drive will enter the DR mode. Observe the simultaneous flashing LEDs of TAPE
MORTION and CLEANING REQUEST. While in DR mode, a SCSI RESET will be treated as soft reset and
will not take the drive out of DR mode.
Also, the drive will enter DR mode upon receiving a Mode Select command with Page Code 0x3C.
14.4. Exiting DR Mode
Ejecting the media via the front panel button or a SCSI UNLOAD command will exit the DR mode and restore the
drive to normal operation. A SCSI Mode Select command with Page Code 0x3C and DREnable bit of zero will also
exit the drive out of DR mode. On the autoloader, the DR mode indication on the 4th line of the LCD will disappear
once the drive exits from DR mode.
14.5. Supported CDROM DR Command Set
14.5.1. Inquiry (12h)
5.1.1.
Peripheral Device Type = 0x05 (CDROM)
5.1.2.
Byte 43 = 0x24 (ASCII “$”)
5.1.3.
Byte 44-48 = “DR-10”
14.5.2.
Read 10 (28h)
This command shall only be supported in DR mode. Execution of this command is in effect a translation of a
LOCATE command and READ 6 (0x08) command executing in sequence.
14.5.3. Read Capacity (0x25)
This command shall only be supported in DR mode.
5.3.1.
Returned LBA (Capacity) = 0004B000h (~640 Mbytes)
5.3.2.
Block Length
= 00000800h (2048 Bytes)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
14-1
14. Appendix G
14.5.4. Read TOC (0x43)
This command shall only be supported in DR mode.
5.4.1.
Returned Data (20 bytes)
00 12 01 01 00 14 01 00 00 00 00 00 00 14 AA 00 00 04 B0 00
14.5.5. Mode Sense/Select Page Code 0x3C
DR Mode Entry/Exit Page
Byte 0
Bit 7
Bit 6
Reserved
Reserved
Byte 1
Byte 2
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page Code = 3Ch
Page Length = 04h
Reserved
DREnable
Byte 3
Reserved
Byte 4
Reserved
Byte 5
Reserved
DREnable: This bit reflects the status of the DR mode. When the drive enters DR mode, DREnable bit will be set to
1. This bit shall be reset to zero when the drive exits the DR mode. A Mode Select of Page Code 0x3C with setting
of DREnable bit will force the drive to enter DR mode. With DREnable bit set to zero, the drive will exit the DR mode.
Setting this bit to 1 when the tape is not write-protected shall be rejected with a Check Condition of Illegal Request
(0x05) and ASC of 26h and ASCQ of 02h.
14.6. Reset Handling
While in DR mode, a SCSI reset shall not take the drive out of DR mode. A powered cycle will take the drive out of
DR mode and return the drive to normal operation.
14-2
SONY AIT-3Ex drive SDX-800V series Ver.1.1
15. Appendix H
15. APPENDIX H: GLOSSARY
This glossary includes many terms that are useful when working with the SONY DDS tape drive. Not all terms are
used within this manual.
Amble: A frame used to separate groups. It has a Logical Frame Number of ZERO. The Main Data Area contains
only a valid header.
ANSI: American National Standards Institute, which sets standards for, amongst other things, SCSI and the safety of
electrical devices.
ATF: Automatic Track Finding
Beginning Of Partition (BOP): The position at the beginning of the permissible recording region of a partition. If
only one partition is defined, this position is typically equivalent to the beginning-of-medium. (BOM)
Beginning Of Medium (BOM): The extreme position along the medium in the direction away from the supply reel
which can be accessed by the device.
Bit Error Rate: Number of errors/Total number of bits written or read
Block Error Rate: Number of errors/Total number of blocks written or read
BOM: Beginning Of Media
BOT: Beginning Of Tape
Buffered mode: A mode of data transfer in write operations which facilitates tape streaming, as reported in the
Mode Select parameter.
Device Area: The first area on the tape used by the drive for drum spin-up and testing.
Drop-out: An area of tape where the signal level of the media has fallen off to a level where data recovery is no
longer possible.
Early Warning: A device computed position near but logically before the end-of-partition. See the REW bit in the
Mode Select Device Configuration page.
ECC: Error Correction Code
End Of Data (EOD): End of data in a partition a special format group written after all current user data.
End Of Medium (EOM): The extreme position along the medium in the direction away from the take-up reel which
can be accessed by the device.
End Of Partition (EOP): The position at the end of the permissible recording region of a partition. May be the same
as end of media.
EOD: End Of Data
EOM: End Of Media
EOP: End Of Partition
EOT: End Of Tape
Error Rate Log: The Error Rate Log exists in RAM in the SDX-800V and maintains a history of hard (un-correctable)
and soft (correctable by RAW or C3 ECC) errors which have occurred since the last tape load.
Fast Searching: The process of reading just the ID areas to locate an item on the tape at a speed up to 75 times
faster than normal read speed.
Fault Log: The Fault Log is stored in RAM in the SDX-800V and holds a record of Self-Test failures and all problems
which have been met during normal operation.
Frame: Two adjacent tracks, one A channel and one B channel.
File-mark: A mark written by the host. It does not necessarily separate files. It is up to the host to assign a meaning
to the mark. Consist of a special recorded element within a partition, containing no user data, which provides a
segmentation scheme.
SONY AIT-3Ex drive SDX-800V series Ver.1.1
15-1
15. Appendix H
Group: A fixed capacity set of frames written onto or read from the tape. A group contains one index and can contain
several records, partial records, File-marks and Set-marks.
Hard Error: A Hard Error is an un-correctable data error. During writing, this is defined as being uncorrected after
the RAW retry limit has been exceeded. During reading, a hard error is logged if a group is un-correctable.
Head Clog: Particles from the tape or from outside the drive adhere to the head gap on a read or write head and
obstruct the reading or writing of data. The particles will become dislodged by the operation of the internal head
cleaner and/or cleaning tape.
Index: Information stored at the end of a group which specifies the contents of the group. Every group except the
Vendor Group contains an index.
Lead-in Area: The first clause of the tape used for loading, BOT positioning, and tape usage logging.
Load: To insert a cassette into the drive. The drive automatically threads the tape and goes online.
LUN: Logical Unit Number, by which a device is identified on the SCSI bus. The Sony SDX-800V has an LUN of 0
fixed in the firmware.
MIC: Memory In Cassette.
Noise: Any kind of magnetic or electric interference detected by the electronics.
Off-line: The Sony SDX-800V is off-line if the tape is currently unloaded or not in the drive. The host has limited
access, and cannot perform any commands which would cause tape motion. The host can, however, load a tape, if
one is inserted, and can execute any diagnostic tests which do not require tape motion.
On-line: The Sony SDX-800V is online when a tape is loaded. The host has access to all command operations,
including those which access the tape, set configurations and run diagnostic tests.
Over Length: The incorrect length condition that exists after executing a read command when the length of the
actual block read exceeds the requested transfer length in the command descriptor block. Only the requested
amount of data is returned to the host.
Partition: The entire usable region of recording and reading paths in a volume or in a portion of a volume. If there is
more than one partition, they shall be numbered starting with ZERO (i.e., beginning of partition ZERO).
RAW: See Read-After-Write
Read-After-Write (RAW): Improves data integrity by reading data immediately after it is written and writing the
frame again if an error is found. Frames are only re-written as necessary, so speed and capacity are affected
minimally.
Repeat (N-group writing): Sometimes called multiple group writing, Repeat (N-group writing) repeats each group
of data so that there are N consecutive copies of each group on the tape. This is a simple way of improving data
integrity, but speed and capacity are sacrificed in writing all data several times.
Reserved: Reserved for future definition and detailing and not generally available for use. Reserved bits and fields
should be set to ZERO.
Set-mark: A mark written by the host to allow fast searching to a point on the tape without having to know the
number of records or file-marks that precede this point. A special recorded element within a partition, containing no
user data, which provides a segmentation scheme hierarchically superior to file-marks for use in addressing or fast
positioning on high capacity storage devices. (Also called Save-Set Mark)
SCSI (Small Computer System Interface): This computer device interface has been certified as an American
National Standard by ANSI. The standard contains the electrical specifications, communication protocol, and
command structure necessary to connect various computer peripherals to a host computer.
Soft Error: A soft error is a data error which can be corrected by a RAW rewrite during writing, or by C1, C2 or C3
ECC, or a read-retry during reading.
Spacing: The act of positioning the medium on a sequential access device.
System Area: A section in the Lead-in Area used to store the tape usage information.
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SONY AIT-3Ex drive SDX-800V series Ver.1.1
15. Appendix H
Tape Log: The Tape Log contains details of the history of a tape, the total number of groups written, of RAW retries,
of groups read, of C3 ECC retries, and of loads. The log is copied into RAM when the tape is loaded into the
SDX-800V, updated as the tape is used, and written back into the System area on the tape when it is unloaded. Tape
Write Protect, power failure or reset will losethe log data maintained in RAM.
Under Length: The incorrect length condition that exists after executing a read command when the requested
transfer length in the command descriptor block exceeds the length of the actual block read.
Volume: A recording medium together with its physical carrier. (a single tape cassette)
SONY AIT-3Ex drive SDX-800V series Ver.1.1
15-3
15. Appendix H
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SONY AIT-3Ex drive SDX-800V series Ver.1.1
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