Seagate Barracuda 180 Family Product manual

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Barracuda 180 Family:

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ST1181677LW/LWV/LC/LCV

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Product Manual, Volume 1

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Barracuda 180 Family:

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ST1181677LW/LWV/LC/LCV

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Product Manual, Volume 1

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© 2000-2001 Seagate Technology LLC All rights reserved

Publication number: 100109939, Rev. C

March 2001

Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC.

Barracuda, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either registered trademarks or trademarks of

Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners.

Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC.

Revision status summary sheet

Revision Date

Rev. A (Class A Release) 11/9/2000

Rev. B

Rev. C

1/17/2001

3/30/2001

Writer/Engineer

L. Newman/J. Nowitzke



Sheets Affected

1/1, v thru viii, 1-74.

Page 26.

Pages 21, 26, and 28.

Notice.

Product Manual 100109939 is Volume 1 of a two volume document with the SCSI interface information in the SCSI Interface Product Manual, Volume 2, part number 75789509.

If you need the SCSI interface information, order the SCSI Interface Product Manual, Volume 2, part number 75789509.

Barracuda 180 Product Manual, Rev. C

1.0

2.0

v

Contents

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1

2.1.2

Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Electromagnetic susceptibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2

2.3

Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.0

4.0

5.0

6.0

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

3.9

Standard features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Media characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Unformatted and formatted capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Accessories (user installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1

4.2

4.3

4.4

4.5

Internal drive characteristics (transparent to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

SCSI performance characteristics (visible to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2.1

4.2.2

Access time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Format command execution time (minutes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2.3

Generalized performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cache operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.5.1

4.5.2

Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1

5.2

Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.1

5.1.2

5.1.3

Environmental interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Read errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Write errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.4

Seek errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Reliability and service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.1

5.2.2

Mean time between failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Field failure rate vs. time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.3

5.2.4

5.2.5

5.2.6

Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Service philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.7

5.2.8

Hot plugging Barracuda 180 disc drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2.9

Drive Self Test (DST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.10

Product warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.1

6.2

6.3

6.4

AC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.1

6.2.2

Conducted noise immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2.3

12 V - Current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

vi Barracuda 180 Product Manual, Rev. C

7.0

8.0

6.5

6.4.1

6.4.2

6.4.3

6.4.4

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.4.5

6.4.6

Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

6.4.7

Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

7.1

7.2

7.3

Drive internal defects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

SCSI systems errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.1

8.2

8.3

8.4

8.5

Drive ID/option select header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.1.1

Notes for Figures 12, 13, and 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

8.1.2

Function description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.0

Interface requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

9.1

9.2

9.3

9.4

9.5

9.6

9.7

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

SCSI interface messages supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

SCSI interface commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.3.1

Inquiry Vital Product data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.3.2

Mode Sense data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

SCSI bus conditions and miscellaneous features supported . . . . . . . . . . . . . . . . . . . . . . . . .48

Synchronous data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.1

Synchronous data transfer periods supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.5.2

REQ/ACK offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.6.1

9.6.2

DC cable and connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

SCSI interface physical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.6.3

9.6.4

SCSI interface cable requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Mating connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

9.7.1

Multimode—SE and LVD alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

9.8

9.9

Terminator requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Terminator power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

9.10

Disc drive SCSI timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

9.11

Drive activity LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

10.0

Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Figure 18.

Figure 19.

Figure 20.

Figure 21.

Figure 22.

Barracuda 180 Product Manual, Rev. C vii

List of Figures

Barracuda 180 family drive (ST1181677LW shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Barracuda 180 family drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Typical Barracuda 180 family drive +12 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Typical Barracuda 180 SCSI SE mode +5 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Typical Barracuda 180 SCSI LVD mode +5 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . 23

DC current and power vs. input/output operations per second (single-ended mode) . . . . . . 24

DC current and power vs. input/output operations per second (LVD mode) . . . . . . . . . . . . . 24

Location of the HDA temperature check point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

ST1181677LW/LWV mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

ST1181677LC/LCV mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

J6 jumper header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

J5 jumper header (on LW/LWV models only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

J2 option select header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Suggested air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

ST1181677LW/LWV drive physical interface (68-pin J1 SCSI I/O connector). . . . . . . . . . . . 50

ST1181677LC/LCV drive physical interface (80-pin J1 SCSI I/O connector) . . . . . . . . . . . . 50

SCSI daisy chain interface cabling for LW/LWV drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Nonshielded 68 pin SCSI device connector used on LW/LWV drives . . . . . . . . . . . . . . . . . . 54

Nonshielded 80 pin SCSI “SCA-2” connector, used on LC/LCV drives . . . . . . . . . . . . . . . . . 55

LVD output signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Typical SE-LVD alternative transmitter receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Barracuda 180 Product Manual, Rev. C 1

1.0

Scope

This manual describes Seagate Technology

®

LLC, Barracuda 180™ disc drives.

Barracuda 180 drives support the small computer system interface as described in the ANSI SCSI SPI-3 interface specifications to the extent described in this manual. The SCSI Interface Product Manual (part number

75789509) describes general SCSI interface characteristics of this and other families of Seagate drives.

From this point on in this product manual the reference to Barracuda 180 models is referred to as “the drive” unless references to individual models are necessary.

Figure 1.

Barracuda 180 family drive (ST1181677LW shown)

2 Barracuda 180 Product Manual, Rev. C


2.0

Applicable standards and reference documentation

The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In particular, the drive must be securely mounted in order to guarantee the specified performance char-

acteristics. Mounting by bottom holes must meet the requirements of Section 8.4.

2.1

Standards

The Barracuda 180 family complies with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual .

The Barracuda 180 disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No.

950-M89, and VDE certified to VDE 0805 and EN60950.

2.1.1

Electromagnetic compatibility

The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use.

As such the drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communications.

The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding. As such, the drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Communications when properly packaged. However, it is the user’s responsibility to assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure does not provide adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, with the shields grounded to the enclosure and to the host controller.

2.1.2

Electromagnetic susceptibility

As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the responsibility of those integrating the drive within their systems to perform those tests required and design their system to ensure that equipment operating in the same system as the drive or external to the system

does not adversely affect the performance of the drive. See Section 5.1.1 and Table 2, DC power requirements.

2.2

Electromagnetic compliance

Seagate uses an independent laboratory to confirm compliance to the directives/standard(s) for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include:

• Typical current use microprocessors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

• Mouse

Although the test system with this Seagate model complies to the directives/standard(s), we cannot guarantee that all systems will comply. The computer manufacturer or system integrator must confirm EMC compliance and provide CE Marking and C-Tick Marking for their product.

Electromagnetic compliance for the European Union

If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic

Compatibility Directive 89/336/EEC of 03 May 1989 as amended by Directive 92/31/EEC of 28 April 1992 and

Directive 93/68/EEC of 22 July 1993.


Australian C-Tick

If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA).

Korean MIC

If this model has the MIC (Ministry of Information and Communication) Marking it complies with paragraph 1 of

Article 11 of the Electromagnetic Compatibility control Regulation and meets the Electromagnetic Compatibility

(EMC) Framework requirements of the Radio Research Laboratory Ministry of Information and Communication

Republic of Korea.

Taiwan MIC

If this model has two Chinese words meaning “EMC certification” followed by an eight digit identification number, as a Marking, it complies with Chinese National Standard (CNS) 13438 and meets the Electromagnetic

Compatibility (EMC) Framework requirements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI).

2.3

Reference documents

Barracuda 180 Installation Guide

Safety and Regulatory Agency Specifications

SCSI Interface Product Manual

Seagate P/N 100109942



ANSI small computer system interface (SCSI) document numbers:

T10/1143D

T10/1236D

T10/996D

T10/1157D

T10/1302D

SFF-8451, Specification for SCA-2 Unshielded Connections

Enhanced SCSI Parallel Interface (EPI)

Primary Commands-2 (SPC-2)

SCSI Block Commands (SBC)

SCSI Architectural Model-2 (SAM-2)

SCSI Parallel Interface version 3 (SPI-3)

Package Test Specification

Package Test Specification

Seagate P/N 30190-001 (under 100 lb.)

Seagate P/N 30191-001 (over 100 lb.)

Specification, Acoustic Test Requirements, and Procedures Seagate P/N 30553-001

In case of conflict between this document and any referenced document, this document takes precedence.


3.0

General description

Barracuda 180 drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood

(PRML) read channel electronics, embedded servo technology, and a wide Ultra160 SCSI interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.

The Ultra160 SCSI interface uses negotiated transfer rates. These transfer rates will occur only if your host adapter supports these data transfer rates and is compatible with the required hardware requirements of the I/

O circuit type. This drive can also operate at SCSI-1 and SCSI-2 data transfer rates for backward compatibility with non-Ultra/Ultra2/Ultra160 SCSI host adapters.

Table 1 lists the features that differentiate the various Barracuda 180 models.

Table 1: Drive model number vs. differentiating features

Model number

ST1181677LW

ST1181677LWV

ST1181677LC

ST1181677LCV

Data buffer size

I/O circuit type [1]

Number of I/O connector pins

4,096 kbytes Single-ended (SE) and low voltage differential (LVD) 68




[1]

See Section 9.6 for details and definitions.

The drive records and recovers data on approximately 3.3-inch (84 mm) non-removable discs.

The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI-2/SCSI-3 interface specifications to the extent described in this manual (volume 1), which defines the product performance characteristics of the Barracuda 180 family of drives, and the SCSI Interface Product Manual describes the general interface characteristics of this and other families of Seagate SCSI drives.

, which

The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets

(logical block addressing is used).

The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a nonreplaceable filter to maintain a contamination-free HDA environment.

Refer to Figure 2 for an exploded view of the drive. This exploded view is for information only—never disassem-

ble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. The drive contains no replaceable parts. Opening the HDA voids your warranty.

Barracuda 180 drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. The drive automatically goes to the landing zone when power is removed.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The shipping lock automatically disengages when power is applied to the drive and the head load process begins.

Barracuda 180 drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments and related reliability concerns.

A high-performance actuator assembly with a low-inertia, balanced, patented, straight-arm design provides excellent performance with minimal power dissipation.


Figure 2.

Barracuda 180 family drive


3.1

Standard features

The Barracuda 180 family has the following standard features:

• Integrated Ultra160 SCSI controller

• Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)

• 16 bit I/O data bus

• Asynchronous and synchronous data transfer protocol (supports Ultra160 transfer rate)

• Firmware downloadable via SCSI interface

• Selectable even byte sector sizes from 512 to 4,096 bytes/sector

• Programmable sector reallocation scheme

• Flawed sector reallocation at format time

• Programmable auto write and read reallocation

• Reallocation of defects on command (post format)

• Enhanced ECC (maximum burst corrections length of 240 bits with a guaranteed burst correction of 233 bits)

• Sealed head and disc assembly

• No preventative maintenance or adjustment required

• Dedicated head landing zone

• Embedded servo design

• Self diagnostics performed when power is applied to the drive

• Zoned bit recording (ZBR)

• Vertical, horizontal, or top down mounting

• Dynamic spindle brake

• 4,096 kbyte data buffer (16,384 kbytes on LWV and LCV models)

• Hot plug compatibility for LC and LCV model drives (Section 9.6.4.2 lists proper host connector needed)

• Supports SCSI bus fairness

3.2

Media characteristics

The media used on the drive has a diameter of approximately 3.3 inches (84 mm). The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

3.3

Performance

• Supports industry standard Ultra160 SCSI interface

• Programmable multi-segmentable cache buffer (see Section 3.1)

• 7,200 RPM spindle. Average latency = 4.17 ms

• Command queuing of up to 64 commands

• Background processing of queue

• Supports start and stop commands (spindle stops spinning)

3.4

Reliability

• 1,200,000 hour MTBF

• LSI circuitry

• Balanced low mass rotary voice coil actuator

• Incorporates industry-standard Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.)

• Incorporates Drive Self Test (DST) technology

• 5-year warranty


3.5

Unformatted and formatted capacities

Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per sector. The following table shows the standard OEM model capacities:

ST1181677

Formatted data block size

512 bytes/sector [1]

1522c441h (181.6 GB) [2]

Unformatted

241.9 GB

Notes.

[1] Sector size selectable at format time. Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted capacities than those listed. See

Mode Select Command and Format Command in the SCSI Interface Product Manual .

[2] User available capacity depends on spare reallocation scheme selected, the number of data tracks per sparing zone, and the number of alternate sectors (LBAs) per sparing zone.

3.6

Programmable drive capacity

Using the Mode Select command, you can change the drive’s capacity to something less than maximum. See the SCSI Interface Product Manual . Refer to the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive will not change the capacity it is currently formatted to have. A number in the number of blocks field that is less than the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.

3.7

Factory installed accessories

OEM standard drives are shipped with the Barracuda 180 Installation Guide , part number 100109942 and the

Safety and Regulatory Agency Specifications , part number 75789512 (unless otherwise specified). A small bag of jumper plugs used for the J2, J5, and J6 option select jumper headers are also included with the drive.

3.8

Options (factory installed)

All customer requested options are incorporated during production or packaged at the manufacturing facility before shipping. Some of the options available are (not an exhaustive list of possible options):

• Other capacities can be ordered depending on sparing scheme and sector size requested.

• Single unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users planning single unit distribution should specify this option.

• The Barracuda 180 Installation Guide , part number 100109942. This guide is usually included with each standard OEM drive shipped, but you may order extra copies.

• The Safety and Regulatory Agency Specifications , part number 75789512, is usually included with each standard OEM drive shipped, but you may order extra copies.

3.9

Accessories (user installed)

The following accessories are available. All accessories may be installed in the field.

• Single unit shipping pack.


4.0

4.1

Performance characteristics

Internal drive characteristics (transparent to user)

Drive capacity

Read/write heads

Bytes/track

Bytes/surface

Tracks/surface (total)

Tracks/inch

Peak bits/inch

Internal data rate

Disc rotational speed

Average rotational latency

ST1181677

181.6

24

406,071

19,263

24,247

31,200

490

282-508

7,200

4.17

GBytes (formatted, rounded off values)

Bytes (average, rounded off values)

Mbytes (unformatted, rounded off values)

Tracks (user accessible)

TPI

KBPI

Mbits/sec (variable with zone) r/min (+0.5%) msec

4.2

SCSI performance characteristics (visible to user)

The values given in Section 4.2.1 apply to all models of the Barracuda 180 family unless otherwise specified.

Refer to Section 9.10 and to the

SCSI Interface Product Manual for additional timing details.

4.2.1

Access time [5]

Average—Typical [2]

Single Track—Typical [2]

Full Stroke—Typical [2]

Including controller overhead

(without disconnect) [1] [3]

Drive level

Read msec

7.6

1.0

16.2

Write

8.4

1.3

17.2

Not Including controller overhead

(without disconnect) [1] [3]

Drive level

Read msec

7.4

0.8

16.0

Write

8.2

1.1

17.0

4.2.2

Format command execution time (minutes) [1]

Maximum (with verify)

Maximum (no verify)

ST1181677

210

120

4.2.3

Generalized performance characteristics

Minimum sector interleave 1 to 1

Data buffer transfer rate to/from disc media (one 512-byte sector):

Minimum [3]*

Average [3]

Maximum [3]

25.3

36.1

47.0

MByte/sec

MByte/sec

MByte/sec

SCSI interface data transfer rate (asynchronous):

Maximum instantaneous one byte wide

Maximum instantaneous two bytes wide

Synchronous formatted transfer rate

In low voltage differential (LVD) interface mode

5.0 Mbytes/sec [4]

10.0 Mbytes/sec [4]

Ultra2 SCSI

5.0 to 80 Mbytes/sec

Ultra160 SCSI

5.0 to 160 Mbytes/sec


Sector Sizes:

Default

Variable

512 byte user data blocks

512 to 4,096 bytes per sector in even number of bytes per sector.

If n (number of bytes per sector) is odd, then n-1 will be used.

Read/write consecutive sectors on a track

Flaw reallocation performance impact (for flaws reallocated at format time using the spare sectors per sparing zone reallocation scheme.)

Average rotational latency

Yes

Negligible

4.17 msec

Notes for Section 4.2.

[1] Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect).

[2] Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

[3] Assumes no errors and no sector has been relocated.

[4] Assumes system ability to support the rates listed and no cable loss.

[5] Access time = controller overhead + average seek time.

Access to data = controller overhead + average seek time + latency time.

4.3

Start/stop time

After DC power at nominal voltage has been applied, the drive becomes ready within 30 seconds if the Motor

Start Option is disabled (i.e. the motor starts as soon as the power has been applied). If a recoverable error condition is detected during the start sequence, the drive executes a recovery procedure which may cause the time to become ready to exceed 30 seconds. During spin up to ready time the drive responds to some commands over the SCSI interface in less than 1.5 seconds after application of power. Stop time is less than 30 seconds from removal of DC power.

If the Motor Start Option is enabled, the internal controller accepts the commands listed in the SCSI Interface

Product Manual less than 1.5 seconds after DC power has been applied. After the Motor Start Command has been received the drive becomes ready for normal operations within 30 seconds typically (excluding an error recovery procedure). The Motor Start Command can also be used to command the drive to stop the spindle

(see SCSI Interface Product Manual ).

There is no power control switch on the drive.

4.4

Prefetch/multi-segmented cache control

The drive provides prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. “The term “cache” refers to the drive buffer storage space when it is used in cache operations. To select prefetch and cache features, the host sends the Mode Select command with the proper values in the applicable bytes in Mode Page 08h (see SCSI Interface Product Manual) . Prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the Mode Select command. However, in actual operation, the prefetch feature overlaps cache

operation somewhat as is noted in Section 4.5.1 and 4.5.2.

All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this

drive family are provided in Table 7.

4.5

Cache operation

In general, 3,600 kbytes (14,399 kbytes of the 16,384 kbytes on LWV and LCV models) of the 4,096 kbytes of physical buffer space in the drive can be used as storage space for cache operations. The buffer can be divided into logical segments (Mode Select Page 08h, byte 13) from which data is read and to which data is written.

The drive supports a maximum of 64 cache segments and maintains a table of logical block disk medium addresses of the data stored in each segment of the buffer. If cache operation is enabled (RCD bit = 0 in Mode

Page 08h, byte 2, bit 0. See SCSI Interface Product Manual ), data requested by the host with a Read command is retrieved from the buffer (if it is there) before any disc access is initiated. If cache operation is not

Barracuda 180 Product Manual, Rev. C 11 enabled, the buffer (still segmented with required number of segments) is still used, but only as circular buffer segments during disc medium read operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the host. On a cache miss, all data transfers to the host are in accordance with buffer-full ratio rules. On a cache hit, the drive ignores the buffer-full ratio rules. See explanations associated with Mode page 02h (disconnect/reconnect control) in the SCSI Interface Product Manual .

The following is a simplified description of a read operation with cache operation enabled:

Case A - A Read command is received and the first logical block (LB) is already in cache:

1.

Drive transfers to the initiator the first LB requested plus all subsequent contiguous LBs that are already in the cache. This data may be in multiple segments.

2.

When the requested LB is reached that is not in any cache segment, the drive fetches it and any remaining requested LBs from the disc and puts them in a segment of the cache. The drive transfers the remaining requested LBs from the cache to the host in accordance with the disconnect/reconnect specification mentioned above.

3.

If the prefetch feature is enabled, refer to Section 4.5.2 for operation from this point.

Case B - A Read command requests data, the first LB of which is not in any segment of the cache:

1.

The drive fetches the requested LBs from the disc and transfers them into a segment, and from there to the host in accordance with the disconnect/reconnect specification referred to in case A.

2.

If the prefetch feature is enabled, refer to Section 4.5.2 for operation from this point.

Each buffer segment is a self-contained circular storage area (wrap-around occurs), the length of which is an integer number of disc medium sectors. The wrap-around capability of the individual segments greatly enhances the buffer’s overall performance as cache storage, allowing a wide range of user selectable configurations, including their use in the prefetch operation (if enabled) even when cache operation is disabled (see

Section 4.5.2). The number of segments is set dynamically by the drive and cannot be set by the host. The size

in kbytes of each segment is not reported by the Mode Sense command page 08h, bytes 14 and 15. The value

0XFFFF is always reported. If a size specification is sent by the host in a Mode Select command (bytes 14 and

15) no new segment size is set up by the drive, and if the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change unchangeable parameters (see SCSI Interface

Product Manual ). The drive supports operation of any integer number of segments from 1 to 64. The default is three segments.

4.5.1

Caching write data

Write caching is a write operation that uses the drive buffer storage area where the data to be written to the medium is stored in one or more segments while the drive performs the write command.

If read caching is enabled (RCD=0), data written to the medium is retained in the cache for future read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed independently, having nothing to do with the state of the RCD bit. When a write command is issued, if RCD=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command. If there are, the respective cache segments are cleared. The new data is cached for subsequent Read commands.

If the number of write data logical blocks exceeds the size of the segment being written into, when the end of the segment is reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation. However, the drive does not overwrite data that has not yet been written to the medium.

If write caching is enabled (WCE=1), the drive may return GOOD status on a write command after the data has been transferred into the cache, but before the data has been written to the medium. If an error occurs while writing the data to the medium, and GOOD status has already been returned, a deferred error will occur.

The Synchronize Cache command may be used to force the drive to write all cached write data to the medium.

Upon completion of a Synchronize Cache command, all data received from previous write commands will have been written to the medium.


Tables 7 show Mode default settings for the drives.

4.5.2

Prefetch operation

If the Prefetch feature is enabled, data in contiguous logical blocks on the disc immediately beyond that which was requested by a Read command can be retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that request those logical blocks (this is true even if cache operation is disabled). Though the prefetch operation uses the buffer as a cache, finding the requested data in the buffer is a prefetch hit, not a cache operation hit. Prefetch is enabled using Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch. Since data that is prefetched replaces data already in some buffer segment(s), the host can limit the amount of prefetch data to optimize system performance. The max prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the

Prefetch Ceiling field (bytes 10 and 11).

During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if the Discontinuity

(DISC) bit is set to one in bit 4 of byte 2 of Mode parameters page 08h.

Whenever prefetch (read look-ahead) is enabled (enabled by DRA = 0), it operates under the control of ARLA

(Adaptive Read Look-Ahead). If the host uses software interleave, ARLA enables prefetch of contiguous blocks from the disc when it senses that a prefetch hit will likely occur, even if two consecutive read operations were not for physically contiguous blocks of data (e.g. “software interleave”). ARLA disables prefetch when it decides that a prefetch hit will not likely occur. If the host is not using software interleave, and if two sequential read operations are not for contiguous blocks of data, ARLA disables prefetch, but as long as sequential read operations request contiguous blocks of data, ARLA keeps prefetch enabled.


5.0

Reliability specifications

The following reliability specifications assume correct host/drive operational interface, including all interface

timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 8.4).

Seek Errors

Read Error Rates [1]

Recovered Data

Unrecovered Data

Miscorrected Data

MTBF

Service Life

Preventive Maintenance

Less than 10 in 10 8 seeks

Less than 10 errors in 10 12 bits transferred (OEM default settings)

Less than 1 sector in 10 15 bits transferred (OEM default settings)

Less than 1 sector in 10 21 bits transferred

1,200,000 hours

5 years

None required

Note.

[1] Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.

5.1

Error rates

The error rates stated in this specification assume the following:

• The drive is operated per this specification using DC power as defined in this manual (see Section 6.2).

• The drive has been formatted with the SCSI Format command.

• Errors caused by media defects or host system failures are excluded from error rate computations. Refer to

Section 3.2, “Media Characteristics.”

• Random data is used.

5.1.1

Environmental interference

When evaluating system operation under conditions of Electromagnetic Interference (EMI), the performance of the drive within the system is considered acceptable if the drive does not generate an unrecoverable condition.

An unrecoverable error, or unrecoverable condition, is defined as one that:

• Is not detected and corrected by the drive itself;

• Is not capable of being detected from the error or fault status provided through the drive or SCSI interface; or

• Is not capable of being recovered by normal drive or system recovery procedures without operator intervention.

5.1.2

Read errors

Before determination or measurement of read error rates:

• The data to be used for measurement of read error rates must be verified as being written correctly on the media.

• All media defect induced errors must be excluded from error rate calculations.

5.1.3

Write errors

Write errors can occur as a result of media defects, environmental interference, or equipment malfunction.

Therefore, write errors are not predictable as a function of the number of bits passed.

If an unrecoverable write error occurs because of an equipment malfunction in the drive, the error is classified as a failure affecting MTBF. Unrecoverable write errors are those which cannot be corrected within two attempts at writing the record with a read verify after each attempt (excluding media defects).

5.1.4

Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. There shall be no more than ten recoverable seek errors in 10

8 physical seek operations. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (15h) is reported with a Medium error (3h) or Hardware error (4h) reported in the Sense Key. This is an

14 Barracuda 180 Product Manual, Rev. C unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the SCSI Interface Product Manual for Request Sense information.

5.2

Reliability and service

You can enhance the reliability of Barracuda 180 disc drives by ensuring that the drive receives adequate cool-

ing. Section 6.0 provides temperature measurements and other information that you can use to enhance the

service life of the drive. Section 8.3 provides recommended air-flow information.

5.2.1

Mean time between failure

The production disc drive achieves an MTBF of 1,200,000 hours when operated in an environment that

ensures the case temperatures specified in Section 6.4.1 are not exceeded. Short-term excursions up to the

specification limits of the operating environment will not affect MTBF performance. Continual or sustained

operation at case temperatures above the values specified in Section 6.4.1 may degrade product reliability.

The MTBF target is specified as device power-on hours (POH) for all drives in service per failure.

MTBF per measurement period =

Estimated power-on operating hours in the period

__

Number of drive failures in the period

Estimated power-on operation hours means power-up hours per disc drive times the total number of disc drives in service. Each disc drive must have accumulated at least nine months of operation. Data is calculated on a rolling average base for a minimum period of six months.

MTBF is based on the following assumptions:

• 8,760 power-on hours per year.

• 250 average on/off cycles per year.

• Operations at nominal voltages.

• Systems will provide adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded.

Drive failure means any stoppage or substandard performance caused by drive malfunction.

A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered an MTBF hit.

5.2.2

Field failure rate vs. time

The expected field failure rate is listed below. Drive utilization will vary. An estimated range of utilization is:

• 720 power-on hours (POH) per month.

• 250 on/off cycles per year.

• Read/seek/write operation 90% of power-on hours.

• Systems will provide adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded.

Month 1

Month 2

Month 3

Month 4

Month 5

Month 6

Month 7

2,500 PPM

1,600 PPM

1,200 PPM

1,000 PPM

890 PPM

840 PPM

805 PPM

Failure rate is calculated as follows:

• No system-induced failures are counted

• Based on 1,200,000 MTBF and 720 power-on hours per month

• Month 1’s rate includes a 300 PPM installation failure


5.2.3

Preventive maintenance

No preventive maintenance is required.

5.2.4

Service life

The useful service life of the drive is five years. Depot repair or replacement of major parts is permitted during

the lifetime (see Section 5.2.5).

5.2.5

Service philosophy

Special equipment is required to repair the drive HDA. In order to achieve the above service life, repairs must be performed only at a properly equipped and staffed service and repair facility. Troubleshooting and repair of

PCBs in the field is not recommended, because of the extensive diagnostic equipment required for effective servicing. Also, there are no spare parts available for this drive. Drive warranty is voided if the HDA is opened.

5.2.6

Service tools

No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.5.

The depot repair philosophy of the drive precludes the necessity for special tools. Field repair of the drive is not practical since there are no user purchasable parts in the drive.

5.2.7

Hot plugging Barracuda 180 disc drives

The ANSI SPI-3 (T10/1302D) document defines the physical requirements for removal and insertion of SCSI devices on the SCSI bus. Four cases are addressed. The cases are differentiated by the state of the SCSI bus when the removal or insertion occurs.

Case 1 - All bus devices powered off during removal or insertion

Case 2 - RST signal asserted continuously during removal or insertion

Case 3 - Current I/O processes not allowed during insertion or removal

Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed

Seagate Barracuda 180 disc drives support all four hot plugging cases. Provision should be made by the system such that a device being inserted makes power and ground connections prior to the connection of any device signal contact to the bus. A device being removed should maintain power and ground connections after the disconnection of any device signal contact from the bus (see T10/1302D SPI-3 Annex C).

It is the responsibility of the systems integrator to assure that no hazards from temperature, energy, voltage, or

ESD potential are presented during the hot connect/disconnect operation.

All I/O processes for the SCSI device being inserted or removed should be quiescent. All SCSI devices on the bus should have receivers that conform to the SPI-3 standard.

If the device being hot plugged uses single-ended (SE) drivers and the bus is currently operating in low voltage differential (LVD) mode, then all I/O processes for all devices on the bus must be completed, and the bus quiesced before attempting to hot plug the drive. Following the insertion of the newly installed device, the SCSI host adapter must issue a Bus Reset, followed by a synchronous transfer negotiation. Failure to perform the

SCSI Bus Reset could result in erroneous bus operations.

The SCSI bus termination and termination power source must be external to the device being inserted or removed.

End users should not mix devices with high voltage differential (HVD) drivers and receivers and devices with

SE, LVD, or multimode drivers and receivers on the same SCSI bus since the common mode voltages in the

HVD environment may not be controlled to safe levels for SE and LVD devices (see ANSI SPI-3).

The disc drive spindle must come to a complete stop prior to completely removing the drive from the cabinet chassis. Use of the Stop Spindle command or partial withdrawal of the drive, enough to be disconnected from the power source, prior to removal are methods for insuring that this requirement is met. During drive insertion,

care should be taken to avoid exceeding the limits stated in Section 6.4.4, “Shock and vibration” in this manual.


5.2.8

S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate a drive failure and is designed to provide sufficient warning of a failure to allow data back-up before an actual failure occurs.

Note.

The firmware will monitor specific attributes for degradation over time but cannot predict instantaneous drive failures.

Each attribute has been selected to monitor a specific set of failure conditions in the operating performance of the drive, and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT bit and the PERF bit of the “Informational

Exceptions Control Mode Page” (1Ch). The DEXCPT bit is used to enable or disable the S.M.A.R.T. process.

Setting the DEXCPT bit will disable all S.M.A.R.T. functions. When enabled, S.M.A.R.T. will collect on-line data as the drive performs normal read/write operations. When the PERF bit is set, the drive is considered to be in

“On-line Mode Only” and will not perform off-line functions.

The process of measuring off-line attributes and saving data can be forced by the Rezero Unit command. Forcing S.M.A.R.T. will reset the timer so that the next scheduled interrupt will be two hours.

The drive can be interrogated by the host to determine the time remaining before the next scheduled measurement and data logging process will occur. This is accomplished by a log sense command to log page 0x3E.

The purpose is to allow the customer to control when S.M.A.R.T. interruptions occur. As described above, forcing S.M.A.R.T by the Rezero Unit command will reset the timer.

Performance impact

S.M.A.R.T. attribute data will be saved to the disc for the purpose of recreating the events that caused a predictive failure. The drive will measure and save parameters once every two hours subject to an idle period on the

SCSI bus. The process of measuring off-line attribute data and saving data to the disc is uninterruptable and the maximum delay is summarized below:

Maximum processing delay

On-line only delay Fully enabled delay

DEXCPT = 0, PERF = 1 DEXCPT = 0, PERF = 0

S.M.A.R.T. delay times 50 milliseconds 300 milliseconds

Reporting control

Reporting is controlled in the Informational Exceptions Control Page (1Ch). Subject to the reporting method, the firmware will issue a 01-5D00 sense code to the host. The error code is preserved through bus resets and power cycles.

Determining rate

S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded error rate increases to an unacceptable level. To determine rate, error events are logged and compared to the number of total operations for a given attribute. The interval defines the number of operations over which to measure the rate. The counter that keeps track of the current number of operations is referred to as the Interval

Counter.

S.M.A.R.T. measures error rate, hence for each attribute the occurrence of an error is recorded. A counter keeps track of the number of errors for the current interval. This counter is referred to as the Failure Counter.

Error rate is simply the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the number of errors and the interval. If the number of errors exceeds the threshold before the interval expires, then the error rate is considered to be unacceptable. If the number of errors does not exceed the threshold before the interval expires, then the error rate is considered to be acceptable. In either case, the interval and failure counters are reset and the process starts over.


Predictive failures

S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a running count of the number of times the error rate for each attribute is unacceptable.To accomplish this, a counter is incremented whenever the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable. Should the counter continually be incremented such that it reaches the predictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History

Counter. There is a separate Failure History Counter for each attribute.

5.2.9

Drive Self Test (DST)

Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST validates the functionality of the drive at a system level.

There are two test coverage options implemented in DST:

1.

extended test

2.

short test

The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from service and return it to Seagate for service.

5.2.9.1

DST Failure Definition

The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a functional failure is encountered during DST. The channel and servo parameters are not modified to test the drive more stringently, and the number of retries are not reduced. All retries and recovery processes are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.

The following conditions are considered DST failure conditions:

• Seek error after retries are exhausted

• Track-follow error after retries are exhausted

• Read error after retries are exhausted

• Write error after retries are exhausted.

Recovered errors will not be reported as diagnostic failures.

5.2.9.2

Implementation

This section provides all of the information necessary to implement the DST function on this drive.

5.2.9.2.1

State of the drive prior to testing

The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST. It is the responsibility of the host application to determine the “not ready” cause.

While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

A Drive Not Ready condition is reported by the drive under the following conditions:

• Motor will not spin

• Motor will not lock to speed

• Servo will not lock on track

• Drive cannot read configuration tables from the disc

In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.


5.2.9.2.2

Invoking DST

To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Product

Manual , Volume 2, part number 75789509 for additional information about invoking DST.

5.2.9.2.3

Short and extended tests

The short and extended test options are described in the following two subsections.

Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.

Short test (Function Code: 001b)

The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within

120 seconds. The short test does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A complete read/verify scan is not performed and only factual failures will report a fault condition. This option provides a quick confidence test of the drive.

Extended test (Function Code: 010b)

The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-track operations test the positioning mechanism. The read operation tests the read head element and the media surface. The write element is tested through read/write/read operations. The integrity of the media is checked through a read/verify scan of the media. Motor functionality is tested by default as a part of these tests.

The anticipated length of the Extended test is reported through the Control Mode page.

5.2.9.2.4

Log page entries

When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a new self-test parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will be moved to make room for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are more than 20 parameter blocks, the least recent parameter block will be deleted. The new parameter block will be initialized as follows:

1.

The Function Code field is set to the same value as sent in the DST command

2.

The Self-Test Results Value field is set to Fh

3.

The drive will store the log page to non-volatile memory

After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-

Test Results Log page in non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed by the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is zero, the drive passed with no errors detected by the DST. If the field is not zero, the test failed for the reason reported in the field.

The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The

Sense key, ASC, ASCQ, and FRU are used to report the failure condition.

5.2.9.2.5

Abort

There are several ways to abort a diagnostic. You can use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic.

You can abort a DST executing in background mode by using the abort code in the DST Function Code field.

This will cause a 01 (self-test aborted by the application client) code to appear in the self-test results values log. All other abort mechanisms will be reported as a 02 (self-test routine was interrupted by a reset condition).

5.2.10

Product warranty

Beginning on the date of shipment to customer and continuing for a period of five years, Seagate warrants that each product (including components and subassemblies) or spare part that fails to function properly under normal use due to defect in materials on workmanship or due to nonconformance to the applicable specifications

Barracuda 180 Product Manual, Rev. C 19 will be repaired or replaced, at Seagate’s option and at no charge to customer, if returned by customer at customer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty procedure. Seagate will pay for transporting the repair or replacement item to customer. For more detailed warranty information refer to the Standard terms and conditions of Purchase for Seagate products.

Shipping

When transporting or shipping a drive, a Seagate approved container must be used. Keep your original box.

They are easily identified by the Seagate-approved package label. Shipping a drive in a non-approved container voids the drive warranty.

Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping by an air-ride carrier experienced in handling computer equipment.

Product repair and return information

Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction any third-party repair facilities. Any unauthorized repair or tampering with the factory-seal voids the warranty.



6.0

Physical/electrical specifications

This section provides information relating to the drive’s physical and electrical characteristics.

6.1

None.

AC power requirements

6.2

DC power requirements

The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector. The table shows current values in Amperes.

Table 2: DC power requirements

Notes

[5]

[1]

ST1181677

SE mode

+5 V

±5%

0.69

LVD mode

+12 V +5 V

±5%[2] ±5%

0.53

0.76

+12 V

±5%[2]

0.53

Voltage

Regulation

Average idle current DCX

Maximum starting current

(peak DC) DC

(peak AC) AC

Delayed motor start (max) DC

Peak operating current

DCX

Maximum DC

Maximum (peak) DC

[3]

[3]

0.77

0.89

[1][4]

0.62

[1][6]

[1]

0.73

0.76

1.15

1.34

2.17

0.03

0.83

0.86

2.22

0.87

1.01

0.68

0.83

0.87

1.43

1.34

2.17

0.03

0.83

0.86

2.22

[1] Measured with average reading DC ammeter or equivalent sampling scope. Instantaneous current peaks will exceed these values. Power supply at nominal voltage. N = 6, 22 Degrees C ambient.

[2] For +12 V, a –10% tolerance is permissible during initial start of spindle, and must return to ±5% before

7,200 rpm is reached. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.

[3]

See +12 V current profile in Figure 3.

[4] This condition occurs when the Motor Start Option is enabled and the drive has not yet received a Start

Motor command.

[5]

See Section 6.2.1 “Conducted Noise Immunity.” Specified voltage tolerance is inclusive of ripple, noise,

and transient response.

[6] Operating condition is defined as random 8 block reads at 156 I/Os per second. Current and power specified at nominal voltages. Decreasing +5 volt supply by 5% increases 5 volt current by 2.9%. Decreasing

+12 volt supply by 5% increases +12 volt current by 2.4%.

[7] During idle, the drive heads are relocated every 60 seconds to a random location within the band from track zero to one-fourth of maximum track.

General Notes from Table 2:

1.

Minimum current loading for each supply voltage is not less than 1.8% of the maximum operating current shown.

2.

The +5 and +12 volt supplies shall employ separate ground returns.

3.

Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device.

4.

Parameters, other than spindle start, are measured after a 10-minute warm up.

5.

No terminator power.


6.2.1

Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz.

Maximum allowed noise values given below are peak to peak measurements and apply at the drive power connector.

+5 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from 100 kHz to 10 MHz

+12 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from 100 kHz to 10 MHz

6.2.2

Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down. Daisy-chain operation requires that power be maintained on the SCSI bus terminator to ensure proper termination of the peripheral I/O cables. To automatically delay motor start based on the target ID (SCSI

ID) enable the Delay Motor Start option and disable the Enable Motor Start option on the J2 connector. See

Section 8.1 for pin selection information. To delay the motor until the drive receives a Start Unit command,

enable the Enable Remote Motor Start option on the J2 connector.

6.2.3

12 V - Current profile

Figure 3 identifies the drive +12 V current profile. The current during the various times is as shown:

T0 Power is applied to the drive.

T1 Controller self tests are performed.

T2 Spindle begins to accelerate under current limiting after performing drive internal diagnostics. See Note 1 ofTable 2.

T3 The spindle is up to speed and the head-arm restraint is unlocked.

T4 The adaptive servo calibration sequence is performed.

T5 Calibration is complete and drive is ready for reading and writing.

Note.

All times and currents are typical. See Table 2 for maximum current requirements.

+12 Volt Current during spindle start – Typical Amperes

Peak AC Envelope

3.0

A

2.0

1.0

Peak DC

0.0

T0 T1 T2 T3

Figure 3.

0.0

2 4 6 8

Seconds

10

Typical Barracuda 180 family drive +12 V current profile

12 14 16

T4


+5 Volt Current during spindle start (single ended) – Typical Amperes

2.0

A

1.5

AC Component

1.0

Nominal (average) DC curve

0.5

T0 T1 T2 T3 T4 T5

Figure 4.

0.0

4 8 12 16

Seconds

20

Typical Barracuda 180 SCSI SE mode +5 V current profile

24 28 32

+5 Volt Current during spindle start (LVD) – Typical Amperes

2.0

A

1.5

AC Component

1.0

0.5

T0 T1 T2 T3 T4 T5

Nominal (average) DC curve

28 32

Figure 5.

0.0

4 8 12 16

Seconds

20

Typical Barracuda 180 SCSI LVD mode +5 V current profile

24

23

24

1.200


6.3

Power dissipation

For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.95 watts

(33.98 BTUs per hour).

For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.3

watts (35.18 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see fig-

ures 6 and 7). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corre-

sponding +5 volt current, +12 volts current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

1.800

1.600

5V A

12V A

Watts

1.400

17

1.000

0.800

0.600

15

Watts

13

11

Figure 6.

0.400

0 50 100

I/Os per Second

150 200

DC current and power vs. input/output operations per second (single-ended mode)

1.800

1.600

1.400

1.200

1.000

0.800

0.600

11

Figure 7.

0.400

0 50 100

I/Os per Second

150

DC current and power vs. input/output operations per second (LVD mode)

200

17

15

13

Watts

5V A

12V A

Watts


6.4

Environmental limits

Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F

(14.8°C). Maximum wet bulb temperature is 82°F (28°C).

6.4.1

Temperature a. Operating

With cooling designed to maintain the case temperature, the drive meets all specifications over a 41°F to

122°F (5°C to 50°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the temperatures are not exceeded. Air

flow may be needed to achieve these temperature values (see Section 8.3). Operation at temperatures

above these values may adversely affect the drives ability to meet specifications.

The MTBF specification for the drive is based on operating in an environment that ensures that the case temperatures are not exceeded. Occasional excursions to drive ambient temperatures of 122°F (50°C) or

41°F (5°C) may occur without impact to specified MTBF. Air flow may be needed to achieve these temperatures. Continual or sustained operation at case temperatures above these values may degrade MTBF. The maximum allowable continuous or sustained HDA case temperature for the rated MTBF is 122°F (50°C).

To confirm that the required cooling for the HDA is provided, place the drive in its final mechanical configuration and perform random write/read operations. After the temperatures stabilize, measure the HDA case temperature of the drive.

The maximum allowable HDA case temperature is 140°F (60°C). Operation of the drive at the maximum case temperature is intended for short time periods only. Continuous operation at elevated temperatures will reduce product reliability.

b. Non-operating

–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.

HDA Temp.

Check Point 1.0" .5"

Figure 8.

Location of the HDA temperature check point

6.4.2

Relative humidity

The values below assume that no condensation on the drive occurs.

a. Operating

5% to 95% non-condensing relative humidity with a maximum gradient of 10% per hour.

b. Non-operating

5% to 95% non-condensing relative humidity.


6.4.3

Effective altitude (sea level) a. Operating

–1,000 to +10,000 feet (–305 to +3,048 meters) b. Non-operating

–1,000 to +40,000 feet (–305 to +12,210 meters)

6.4.4

Shock and vibration

Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the enclosure to minimize drive movement.

The limits of shock and vibration defined within this document are specified with the drive mounted by any of

the four methods shown in Figure 9, and in accordance with the restrictions of Section 8.4. Orientation of the

side nearest the LED may be up or down.

6.4.4.1

Shock a. Operating—normal

The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 10.0 Gs at a maximum duration of 11 msec (half sinewave). The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 15.0 Gs at a maximum duration of 2 msec (half sinewave). Shock may be applied in the X, Y, or Z axis.

b. Operating—abnormal

Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not exceeding 40 Gs at a maximum duration of 11 msec (half sinewave). Shock occurring at abnormal levels may promote degraded operational performance during the abnormal shock period. Specified operational performance will continue when normal operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than two times per second.

c. Non-operating

The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives.

The drive subjected to nonrepetitive shock not exceeding 75 Gs at a maximum duration of 11 msec (half sinewave) shall not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

The typical drive subjected to nonrepetitive shock not exceeding 150 Gs typical at a maximum duration of 2 msec (half sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

The drive subjected to nonrepetitive shock not exceeding 80 Gs at a maximum duration of 0.5 msec (half sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

d. Packaged

Disc drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as defined in the table below. For additional details refer to Seagate specifications 30190-001

(under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg).

Package size

<600 cu in (<9,800 cu cm)

600-1800 cu in (9,800-19,700 cu cm)

>1800 cu in (>19,700 cu cm)

>600 cu in (>9,800 cu cm)

Packaged/product weight

Any

0-20 lb (0 to 9.1 kg)

0-20 lb (0 to 9.1 kg)

20-40 lb (9.1 to 18.1 kg)

Drop height

60 in (1524 mm)

48 in (1219 mm)

42 in (1067 mm)

36 in (914 mm)


Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.

Z

Y

X

Z

X

Y

Figure 9.

Recommended mounting


6.4.4.2

Vibration a. Operating - normal

The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding

5-400 Hz @ 0.5 G

Vibration may be applied in the X, Y, or Z axis.

Translational random flat profile:

10 - 400 Hz 0.4 GRMS b. Operating - abnormal

Equipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not exceeding:

15 minutes of duration at major resonant frequency

5-400 Hz @ 0.75 G (X, Y, or Z axis)

Vibration occurring at these levels may degrade operational performance during the abnormal vibration period. Specified operational performance will continue when normal operating vibration levels are resumed. This assumes system recovery routines are available.


10 - 400 Hz 1.2 GRMS c. Non-operating

The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives.

The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding

20-400 Hz @ 2.00 G

Vibration may be applied in the X, Y, or Z axis.


10 - 400 Hz 1.2 GRMS

6.4.5

Air cleanliness

The drive is designed to operate in a typical office environment with minimal environmental control.

6.4.6

Acoustics

Sound power during idle mode shall be 3.7 bels typical when measured to ISO 7779 specification.

There will not be any discrete tones more than 10 dB above the masking noise on typical drives when measured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.

6.4.7

Electromagnetic susceptibility

See Section 2.1.2.


6.5

Mechanical specifications

The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions

of the front panel are shown in figure below. Refer to Figures 10 and 11 for detailed mounting configuration

dimensions. See Section 8.4, “Drive mounting.”

Height:

Width:

Depth:

Weight:

1.6 in

4.000 in

5.75 in

2.3 pounds

40.64 mm

101.6 mm

146.05 mm

1.043 kilograms

// T -ZS

-Z-

A

M

U -X-

H

K

-Z-

L

[1]

B

R

J

Notes:

[1] Mounting holes are 6-32 UNC 2B, three on each side and four on the bottom.

Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of

0.12 in. (3.05 mm).

P

G

[1]

F

E D

C

-X-

Figure 10.

ST1181677LW/LWV mounting configuration dimensions

D

E

F

G

A

B

C

H

J

K

L

M

P

R

S

T

U

Dimension Table

1.654

5.787

4.000

3.750

.125

1.750

1.625

1.122

4.000

.250

1.638

.181

1.625

.265

.315

.015

.015

Inches max max

±

.010

±

.010

±

.010

±

.010

±

.020

±

.020

±

.010

±

.010

±

.010

±

.020

±

.020

±

.010

±

.040

max max

Millimeters

42.01

147.00

101.60

95.25

max

±

.25

±

.25

3.18

44.45

41.28

28.50

101.60

6.35

41.60

4.60

±

.25

±

.25

±

.50

±

.50

±

.25

±

.25

±

.25

±

.50

41.28

6.73

7.00

0.38

±

.50

±

.25

±

.10 max

0.38

max max


K

// T -ZS

[1] -Z-

H L

J

B

-Z-

A

M

U -X-

R

N -Z- -X-

Notes:

[1] Mounting holes are 6-32 UNC 2B, three on each side and four on the bottom.

Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of 0.12 in. (3.05 mm).

P

G

[1]

F

E D

C

-X-

Figure 11.

ST1181677LC/LCV mounting configuration dimensions

M

N

P

R

H

J

K

L

S

T

U

D

E

F

G

A

B

C

Inches max max

±

.010

±

.010

±

.010

±

.010

±

.020

±

.020

±

.010

±

.010

±

.010

±

.020

max

±

.020

±

.010

±

.040

max max

1.654

5.787

4.000

3.750

.125

1.750

1.625

1.122

4.000

.250

1.638

.181

.040

1.625

2.618

.276

.015

.015

Dimension Table

Millimeters

42.01

147.00

101.60

95.25

max

±

.25

±

.25

3.18

44.45

41.28

28.50

101.60

6.35

41.61

4.60

±

.25

±

.25

±

.50

±

.50

±

.25

±

.25

±

.25

±

.50

1.20

41.28

66.50

7.00

0.38

max

±

.50

±

.25

±

1.02

max

0.38

max max


7.0

Defect and error management

The drive, as delivered, complies with this specification. The read error rate and specified storage capacity are not dependent upon use of defect management routines by the host (initiator).

Defect and error management in the SCSI system involves the drive internal defect/error management and

SCSI systems error considerations (errors in communications between Initiator and the drive).Tools for use in designing a defect/error management plan are briefly outlined in this section, with references to other sections where further details are given.

7.1

Drive internal defects

During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their locations recorded on the drive primary defects list (referred to as the “P” list and also as the ETF defect list). At factory format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the location listed in the defects reallocation table. The “P” list is not altered after factory formatting. Locations of defects found and reallocated during error recovery procedures after drive shipment are listed in the “G” list (defects growth list). The “P” and “G” lists may be referenced by the initiator using the

Read Defect Data command (refer to the SCSI Interface Product Manual ).

The time for the drive to process the Read Defect Data command is dependent on the number of “P” and “G” list entries. The Read Defect Data command supports two reporting modes of processing the data.

The maximum time for the drive to process the internal defect data is summarized below:

Maximum command time

Sector Format

Bytes From Sector Format

1 minute

3 minutes

7.2

Drive error recovery procedures

Whenever an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover the data. The error recovery procedures used depend on the options previously set up in the error recovery parameters mode page. Error recovery and defect management may involve the use of several SCSI commands, the details of which are described in the SCSI Interface Product Manual.

The drive implements selectable error recovery time limits such as are required in video applications. For additional information on this, refer to the SCSI Interface Product Manual which describes the Mode Select/Mode

Sense Error Recovery parameters.

The error recovery scheme supported by the drive provides a means to control the total error recovery time for the entire command in addition to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a command can be limited via the Recovery Time Limit bytes in the Error Recovery Mode

Page. The total amount of time spent in error recovery for a single LBA can be limited via the Read Retry Count or Write Retry Count bytes in the Error Recovery Mode Page.

The drive firmware error recovery algorithms consist of 11 levels for read recoveries and 5 levels for writes.

Table 3 equates the Read and Write Retry Count with the maximum possible recovery time for read and write

recovery of individual LBAs. The times given do not include time taken to perform reallocations, if reallocations are performed. Reallocations are performed when the ARRE bit (for reads) or AWRE bit (for writes) is one, the

RC bit is zero, and the Recovery Time Limit for the command has not yet been met. Time needed to perform reallocation is not counted against the Recovery Time Limit.

The Read Continuous (RC) bit, when set to one, requests the disc drive to transfer the requested data length without adding delays (for retries or ECC correction) that may be required to insure data integrity. The disc drive may send erroneous data in order to maintain the continuous flow of data. The RC bit should only be used when data integrity is not a concern and speed is of utmost importance. If the Recovery Time Limit or retry count is reached during error recovery, the state of the RC bit is examined. If the RC bit is set, the drive will transfer the unrecovered data with no error indication and continue to execute the remaining command. If the RC bit is not set, the drive will stop data transfer with the last good LBA, and report a “Check Condition,

Unrecovered Read Error.”


Table 3:

Read retry

count [1]

6

7

4

5

2

3

0

1

8

9

10

11(default)

Read and write retry count maximum recovery times [1]

Maximum recovery time per

LBA (cumulative, msec)

58.03

74.61

373.05

406.21

472.42

538.74

704.56

746.03

754.3

804.04

895.66

1,982.25

Write retry count

2

3

0

1

4

5 (default)

Maximum recovery time per

LBA (cumulative, msec)

24.18

36.27

40.3

52.39

128.96

157.17

[1] These values are subject to change.

Setting these retry counts to a value below the default setting could result in an increased unrecovered error rate which may exceed the value given in this product manual. A setting of zero (0) will result in the drive not performing error recovery.

For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retry count set to 4, and the recovery time limit field (Mode Sense page 01, bytes 10 and 11) set to FF FF hex (maximum). A four LBA Read command is allowed to take up to 346 msec recovery time for each of the four LBAs in the command. If the recovery time limit is set to 00 C8 hex (200 msec decimal) a four LBA read command is allowed to take up to 200 msec for all error recovery within that command. The use of the Recovery Time

Limit field allows finer granularity on control of the time spent in error recovery. The recovery time limit only starts counting when the drive is executing error recovery and it restarts on each command. Therefore, each command’s total recovery time is subject to the recovery time limit. Note: A recovery time limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the Recovery

Time Limit field to 00 01.

7.3

SCSI systems errors

Information on the reporting of operational errors or faults across the interface is given in the SCSI Interface

Product Manual . Message Protocol System is described in the SCSI Interface Product Manual . Several of the messages are used in the SCSI systems error management system. The Request Sense command returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive.

Status returned by the drive to the Initiator is described in the SCSI Interface Product Manual . Status reporting plays a role in the SCSI systems error management and its use in that respect is described in sections where the various commands are discussed.


8.0

Installation

Note.

These drives are designed to be used only on single-ended (SE) or low voltage differential (LVD) busses. Do not install these drives on a high voltage differential (HVD) bus.

The first thing to do when installing a drive is to set the drive SCSI ID and set up certain operating options. This is usually done by installing small shorting jumpers on the pins of connectors J2 and J6 on the PCBA (or J1-

Auxiliary on the LW/LWV models), or via the drive to host I/O signals on the LC/LCV models. Some users connect cables to J6 or J5-Auxiliary and perform the set-up using remote switches.

Configure drive options

For option jumper locations and definitions refer to Figures 12, 13, and 14. Drive default mode parameters are

not normally needed for installation. Refer to Section 9.3.2 for default mode parameters if they are needed.

• Ensure that the SCSI ID of the drive is not the same as the host adapter. Most host adapters use SCSI ID 7 because ID 7 is the highest priority on both 8 and 16 bit data buses.

• If multiple devices are on the bus set the drive SCSI ID to one that is not presently used by other devices on the bus.

• If the drive is the only device on the bus, attach it to the end of the SCSI bus cable. The user, system integrator, or host equipment manufacturer must provide external terminators.

Note.

For additional information about terminator requirements, refer to Sections 9.8 and 9.9.

• Set all appropriate option jumpers for desired operation prior to power on. If jumpers are changed after power has been applied, recycle the drive power to make the new settings effective.

• Installation instructions are provided by host system documentation or with any additionally purchased drive installation software. If necessary see Section 10 for Seagate support services telephone numbers.

• Do not remove the manufacturer’s installed labels from the drive and do not cover with additional labels, as the manufacturer labels contain information required when servicing the product.

Formatting

• It is not necessary to low level format this drive. The drive is shipped from the factory low level formatted in

512 byte sectors.

• Reformat the drive if a different spare sector allocation scheme is selected.

• High level formatting the drive involves assigning one or more partitions or logical drives to the drive volume.

Follow the instructions in the system manuals for the system into which the drive is to be installed.

8.1

Drive ID/option select header

Figures 12 and 13 show views of the drive ID select jumper connectors. Figure 14 shows the option select

jumper connector for all models. Figure 12 shows the drive’s J5-auxiliary jumper connector. Both J5-auxiliary

and J6 have pins for selecting drive ID and for connecting the remote LED cable. Only one or the other should be used, although using both at the same time would not damage the drive. The notes following the figures describe the functions of the various jumper positions on the connectors J2, J5-Auxiliary and J6. Suggested part number for the jumpers used on J2 is Molex 52747-0211 (Seagate part number 77679052). A bag with jumper plugs is shipped with the standard OEM drives.


Drive

Front

Jumper Plug

(enlarged to show detail)

Pin 1

J6 [1]

[4]

SCSI ID = 0

SCSI ID = 1

SCSI ID = 2

SCSI ID = 3

SCSI ID = 4

SCSI ID = 5

SCSI ID = 6

SCSI ID = 7

SCSI ID = 8

SCSI ID = 9

SCSI ID = 10

SCSI ID = 11

SCSI ID = 12

SCSI ID = 13

SCSI ID = 14

SCSI ID = 15

Reserved

L

E

D

R

E

S

A

3

A

2

A

1

A

0

(default)

Shipped with cover installed.

Do not install jumpers;

retain cover.

[4] Host

Alternate

Usage Plug:

+5V

[6]

Reserved

Pins

11 9 7 5 3 1

8 6 4 2

Ground

Drive Activity LED

[4] Dashed area is optional host circuitry (external to the drive) connected to host supplied optional usage plug.

Do not connect anything to pins 13-20.

Figure 12.

J6 jumper header


Drive HDA (rear view, PCB facing downward)

Pin 1 +5V Ground

J5

Pin 1

[1] [2]

[2]

4P 3P 2P

J1-DC Power

1P

68 Pin

SCSI I/O Connector

J1

SCSI ID = 0

SCSI ID = 1

SCSI ID = 2

SCSI ID = 3

SCSI ID = 4

SCSI ID = 5

SCSI ID = 6

SCSI ID = 7

(default)

PCB

SCSI ID = 8

SCSI ID = 9

SCSI ID = 10

SCSI ID = 11

SCSI ID = 12

SCSI ID = 13

SCSI ID = 14

SCSI ID = 15

Reserved

A 3 A2 A1 A 0

Host

Alternate

Usage Plug

+5V

N.C.

[4]

+5V

N.C.

11 9 7 5 3 1

12 10 8 6 4 2

Ground

A0 A1 A2 A3

Drive Activity LED

[4] Dashed area is optional host circuitry (external to the drive) connected to host supplied optional usage plug.

For ID selection use jumpers as shown or connect a cable for remote switching as shown below.

Pins 1, 3, 5, and 7 are optional connections to switching circuits in host equipment to establish drive ID.

Remote Switches

Pins 2, 4, 6, and 8 are normally not grounded.

They are driven low (ground) for 250 ms after a Reset or PWR ON to allow drive to read SCSI ID selected.

Figure 13.

J5 jumper header (on LW/LWV models only)

35


J2 Pin 1

*

Additional notes on these

functions in section 8.1.2.

Jumper

Positions

Force single-ended bus mode

Delay Motor Start

S

E

D

S

M

E

W

P

P

D

R

E

S

R

E

S

T

P

Enable Remote Motor Start

Write Protect

Parity Disable

Reserved

Term. Power to SCSI Bus

[3]

(applies to “LW/LWV” models only; reserved on “LC/LCV” models)

J2

J2

Jumper Plug

(enlarged to show detail)

J6

Drive

Front

Figure 14.

J2 option select header

8.1.1

Notes for Figures 12, 13, and 14.

[1] Notes explaining the functions of the various jumpers on jumper header connectors J2, J5, and J6 are

given here and in Section 8.1.2. The term “default” means as standard OEM units are configured with a

jumper on those positions when shipped from factory. “Off” means no jumper is installed; “On” means a jumper is installed. OFF or ON underlined is factory default condition.

The PCBA on LC/LCV models does not have connector J5. The J5 connector signals conform to

SFF-8009 Revision 2.0, Unitized Connector for Cabled Drives, signal assignments for auxiliary connectors.

[2]

These signals are also on 80-pin J1 I/O connector. See Tables 14 and 15.

[3] Voltage supplied by the drive.


WP

On

Off

PD

On

Off

8.1.2

J2 jumper installation

SE

On

Off

Function description

Jumper function description

Forces drive to use single-ended I/O drivers/receivers only.

Drive can operate on the interface in low voltage differential mode or single-ended, depending on the voltage state of the I/O “DIFFSNS” line. Default is SE jumper not installed.

DS

Off

Off

On

On

ME

Off

On

Off

On

Spindle starts immediately after power up - Default setting.

Drive spindle does not start until Start Unit command received from host.

Spindle Startup is delayed by SCSI ID times 12 seconds after power is applied, i.e., drive 0 spindle starts immediately when DC power connected, drive 1 starts after 12 second delay, drive 2 starts after 24 second delay, etc.

Drive spindle starts when Start Unit command received from host. Delayed start feature is overridden and does not apply when ME jumper is installed.

Entire drive is write protected.

Drive is not write protected. Default is WP jumper not installed.

Parity checking and parity error reporting by the drive is disabled.

Drive checks for parity and reports result of parity checking to host.

Default is PD jumper not installed.

RES

Off

TP1

Off

On

Reserved jumper position. Default is no RES jumper installed.

(Does not apply to the LC/LCV models)

The drive does not supply terminator power to external terminators or to the SCSI bus I/O cable.

Drive supplies power to SCSI bus I/O cable. When drives have differential I/O circuits, a jumper on the TP1 position may be needed to power external terminators (see system documentation). These drives do not have terminator circuits on the drive.


8.2

Drive orientation

The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive performance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, and these are the two preferred mounting orientations.

8.3

Cooling

Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding

the drive will not exceed temperature conditions specified in Section 6.4.1, “Temperature.”

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the tempera-

ture measurement guidelines described in Section 6.4.1.

Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1 in

which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment.

If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 15. The air-flow pat-

terns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guide-

lines of Section 6.4.1 are met.

Above unit

Note. Air flows in the direction shown (back to front) or in reverse direction (front to back)

Under unit

Note. Air flows in the direction shown or in reverse direction (side to side)

Figure 15.

Suggested air flow

Above unit

Under unit


8.4

Drive mounting

When mounting the drive using the bottom holes (x-y plane in Figure 9) care must be taken to ensure that the

drive is not physically distorted due to a stiff non-flat mounting surface. The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting surface stiffness: k * x = F < 15lb = 67N where ‘k’ represents the mounting surface stiffness (units of lb/in or N/mm), and ‘x’ represents the out-of-plane mounting surface distortion (units of inches or millimeters). The out-of-plane distortion (‘x’) is determined by defining a plane with three of the four mounting points fixed and evaluating the out-of-plane deflection of the fourth mounting point when a known force (F) is applied to the fourth point.

Note.

Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with SeagateTechnology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame. Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it can meet the shock and vibration specifications listed in this manual.

8.5

Grounding

Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electrically isolating shock mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user must provide a nonconductive (electrically isolating) method of mounting the drive in the host equipment.

Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground. This is the system designer’s and integrator’s responsibility.



9.0

Interface requirements

This section partially describes the interface requirements as implemented on the drives.

9.1

General description

This section describes in essentially general terms the interface requirements supported by the Barracuda

180. No attempt is made to describe all of the minute details of conditions and constraints that must be considered by designers when designing a system in which this family of drives can properly operate. Seagate declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various places herein, with exceptions as noted herein or in the Seag a te

75789509.

SCSI Interface Product Manual , part number

9.2

SCSI interface messages supported

Table 4 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Barracuda 180 family drives.

Table 4: SCSI messages supported by Barracuda 180 family drives

Message name

Abort

Abort-tag

Bus device reset

Clear ACA

Clear queue

Command complete

Continue I/O process

Disconnect

Extended messages

Identify

Ignore wide residue (two bytes)

Initiate recovery

Initiator detected error

Linked command complete

Linked command complete with flag

Message parity error

Message reject

Modify data pointer

No operation

Parallel Protocol Request

Queue tag messages (two bytes)

ACA

Head of queue tag

Ordered queue tag

Simple queue tag

Release recovery

Restore pointers

Save data pointer

Synchronous data transfer req.

Target transfer disable

Terminate I/O process

Wide data transfer request

24h

21h

22h

20h

10h

03h

02h

[1]

13h

11h

[1]

80h-FFh

23h

0Fh

05h

0Ah

0Bh

09h

07h

[1]

08h

[1] [2]

Message code

06h

0Dh

0Ch

16h

0Eh

00h

12h

04h

01h [1]

Notes.

[1] Extended messages (see the SCSI Interface Product Manual ).

Y

Y

Y

N

N

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

N

Y

Y

Y

Y

N

Y

Y

Y

Y

N

Y

Y

Y

Supported by

SCSI-2/3

Y

Y


9.3

SCSI interface commands supported

Table 5 following lists the SCSI interface commands that are supported by the drive. OEM standard drives are

shipped set to operate in Ultra160 mode.

Table 5: Commands supported by Barracuda 180 family drive

Command name

Change definition

Compare

Copy

Copy and verify

Format unit [1]

DPRY bit supported

DCRT bit supported

STPF bit supported

IP bit supported

DSP bit supported

IMMED bit supported

VS (vendor specific)

Inquiry

Date code page (C1h)

Firmware numbers page (C0h)

Implemented operating def page (81h)

Jumper settings page (C2h)

Supported Vital product data page (00h)

Unit serial number page (80h)

Lock-unlock cache

Log select

PCR bit

DU bit

DS bit

TSD bit

ETC bit

TMC bit

LP bit

Log sense

Application client log page (0Fh)

Cache statistics page (37h)

Non-medium error page (06h)

Pages supported list (00h)

Read error counter page (03h)

Self-test results page (10h)

Start-stop cycle counter page (0Eh)

Temperature page (0Dh)

Verify error counter page (05h)

Write error counter page (02h)

Factory log page (3Eh)

Mode select (same pages as Mode Sense 1Ah)

Mode select (10) (same pages as Mode Sense 1Ah)

Mode sense

Caching parameters page (08h)

Command code

40h

39h

18h

3Ah

04h

12h

36h

4Ch

4Dh

15h

55h

1Ah

Supported by

SCSI-2/3

Y

Y

Y

Y

Y

N

N

N

Y

Y

Y

N

Y

Y

Y

Y

Y

N

Y

Y

Y

Y

Y

Y

Y [2]

Y

Y [2]

Y

Y

Y

Y

Y

Y

Y

Y

Y

N

N

Y

N

Y

N

N

N


Table 5: Commands supported by Barracuda 180 family drive (Continued)

Command code Command name

Control mode page (0Ah)

Disconnect/reconnect (02h)

Error recovery page (01h)

Format page (03h)

Information exceptions control page (1Ch)

Notch and Partition Page (0Ch)

Power condition page (1Ah)

Rigid disc drive geometry page (04h)

Unit attention page (00h)

Verify error recovery page (07h)

Xor Control page (10h)

Mode sense (10) (same pages as Mode Sense 1Ah)

Persistent Reserve In

Persistent Reserve Out

Prefetch

Read

Read buffer (modes 0, 2, 3 supported)

Read capacity

Read defect data (10)

Read defect data (12)

Read extended

DPO bit supported

FUA bit supported

Read long

Reassign blocks

Receive diagnostic results

Supported diagnostics pages (00h)

Translate page (40h)

Release

Release (10)

Request sense

Actual retry count bytes

Extended sense

Field pointer bytes

Reserve

3rd party reserve

Extent reservation

Reserve (10)

3rd part reserve

Extent reservation

Rezero unit

Search data equal

Search data high

Search data low

Seek

Seek extended

Send diagnostics

5Ah

5Eh

5Fh

34h

08h

3Ch

25h

37h

B7h

28h

3Eh

07h

1Ch

17h

57h

03h

16h

56h

01h

31h

30h

32h

0Bh

2Bh

1Dh

Supported by

SCSI-2/3

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

N

Y

Y

N

Y

Y

Y

Y

Y

N

Y

Y

Y

Y

Y

Y

N

Y

N

Y

Y

Y

N

Y

Y

N

N

Y

43


Table 5: Commands supported by Barracuda 180 family drive (Continued)

Command name

Supported diagnostics pages (00h)

Translate page (40h)

Set limits

Start unit/stop unit (spindle ceases rotating) (1Ch)

Synchronize cache

Test unit ready

Verify

BYTCHK bit

Write

Write and verify

DPO bit

Write buffer (modes 0, 2, supported)

Firmware download option (modes 5, 7 supported) [3]

Write extended

DPO bit

FUA bit

Write long

Write same

PBdata

LBdata

XDRead

XDWrite

XPWrite

Command code

33h

1Bh

35h

00h

2Fh

0Ah

2Eh

3Bh

2Ah

3Fh

41h

52h

50h

51h

Supported by

SCSI-2/3

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

N

Y

Y

N

N

N

N

N

[1] The drive can format to any even number of bytes per sector from 512 to 4,096.

[2]

Tables 7 show how individual bits are set and which are changeable by the host.

[3] WARNING: A power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.


Table 6 lists the Standard Inquiry command data that the drive should return to the initiator per the format given

in the SCSI Interface Product Manual.

Table 6: Barracuda 180 family drive Standard Inquiry data

Bytes Data (HEX)

0-15

16-31

32-47

48-63

00 00 03 1 [12] 2 8B 00 01 3E 53 45 41 47 41 54 45 20 VENDOR ID

53 54 [31] [31] [38] [31] [36] [37] [37] [4C] [57] [20]

3

20 20 20 20 PRODUCT ID

R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

64-79

80-95

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 [32] COPYRIGHT

112-127 [30] [30] [30] 5 20 53 65 61 67 61 74 65 20 41 6C 6C 20 NOTICE

128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20

[ ]

[ ]

1

2

03 means SCSI-3 (Ultra160) implemented.

The drive can be changed between these two configurations:

02 means response data in SCSI-2/SCSI-3 format.

12 means the drive uses the hierarchical addressing mode to assign LUNs to logical units (default is 12).

R# Four ASCII digits representing the last four digits of the product Firmware Release number. This information is also given in the Vital Product Data page C0h, together with servo RAM and ROM release numbers.

S# Eight ASCII digits representing the eight digits of the product serial number.

[ ]

3

Bytes 18 through 27 reflect model of drive. Shown here are hex values for Model ST1181677LW.

For LWV models, bytes 25-27 are 4C 57 56

For LC models, bytes 25 -27 are 4C 43 20

For LCV models, bytes 25-27 are 4C 43 56

[ ]

5

Copyright Year - changes with actual year.

9.3.1

Inquiry Vital Product data

Instead of the standard Inquiry data shown in Table 6, the initiator can request several Vital Product Data

pages by setting the Inquiry command EVPD bit to one. The SCSI Interface Product Manual lists the Vital

Product Data pages and describes their formats. A separate Inquiry command must be sent to the drive for each Vital Product Data page the initiator wants the drive to send back.


9.3.2

Mode Sense data

The Mode Sense command provides a means for the drive to report its operating parameters to the initiator.

The drive maintains four sets of Mode parameters, Default values, Saved values, Current values and Changeable values.

Default values are hard coded in the drive firmware that is stored in flash EPROM nonvolatile memory on the drive PCBA. Default values can be changed only by downloading a complete set of new firmware into the flash

EPROM. An initiator can request and receive from the drive a list of default values and use those in a Mode

Select command to set up new current and saved values, where the values are changeable.

Saved values are stored on the disk media using a Mode Select command. Only parameter values that are allowed to be changed can be changed by this method. See “Changeable values” defined below. Parameters in the saved values list that are not changeable by the Mode Select command get their values from the default values storage.

Current values are volatile values currently being used by the drive to control its operation. A Mode Select command can be used to change these values (only those that are changeable). Originally, they are installed from saved or default values after a power on reset, hard reset, or Bus Device Reset message.

Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved values can be changed by a Mode Select command. A “one” allows a change to a corresponding bit; a

“zero” allows no change. For example, in Table 7 refer to Mode page 01, in the row entitled “CHG”. These are

hex numbers representing the changeable values for mode page 01. Note that bytes 04, 05, 06, and 07 are not changeable, because those fields are all zeros. If some changeable code had a hex value EF, that equates to the binary pattern 1110 1111. If there is a zero in any bit position in the field, it means that bit is not changeable. Bits 7, 6, 5, 3, 2, 1, and 0 are changeable, because those bits are all ones. Bit 4 is not changeable.

Though the drive always reports non-zero values in bytes 00 and 01, those particular bytes are never changeable.

The Changeable values list can only be changed by downloading new firmware into the flash EPROM.

On standard OEM drives the Saved values are taken from the default values list and stored into the saved values storage location on the media prior to shipping.

When a drive is powered up, it takes saved values from the media and stores them to the current values storage in volatile memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the drive is up to speed and is “ready.” An attempt to do so results in a “Check Condition status being returned.

Note.

Because there may be several different versions of drive control firmware in the total population of drives in the field, the Mode Sense values given in the following tables may not exactly match those of some drives.


The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI Ultra160 implementation (see the SCSI Interface Product Manual ).

Definitions: DEF = Default value. Standard drives are shipped configured this way.

CHG = Changeable bits; indicates if current and saved values are changeable.

Note.

Saved values for OEM drives are normally the same as the default values.

Table 7: Mode sense data, ST1181677 values

Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Mode

Sense

Data

00 A6 00 10 00 00 00 08 15 22 C4 41 00 00 02 00

Mode

Page

<------------------------------Mode Page Headers and Parameter Data Bytes---------------------------->

01 DEF 81 0A C0 0B F0 00 00 00 05 00 FF FF

01 CHG 81 0A FF FF 00 00 00 00 FF 00 FF FF

02 DEF 82 0E 80 80 00 0A 00 00 00 00 00 00 00 00 00 00

02 CHG 82 0E FF FF 00 00 00 00 00 00 00 00 87 00 00 00

03 DEF 83 16 11 06 00 00 00 10 00 00 02 63 02 00 00 01 00 5A 00 54 40 00 00 00

03 CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

04 DEF 84 16 00 5E B7 18 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 09 00 00

04 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

07 DEF 87 0A 00 0B F0 00 00 00 00 00 FF FF

07 CHG 87 0A 0F FF 00 00 00 00 00 00 FF FF

08 DEF 88 12 14 00 FF FF 00 00 FF FF FF FF 80 03 00 00 00 00 00 00

08 CHG 88 12 B5 00 00 00 FF FF FF FF 00 00 A0[ 1 ] FF 00 00 00 00 00 00

0A DEF 8A 0A 02 00 00 00 00 00 00 00 15 DA

0A CHG 8A 0A 03 F1 00 00 00 00 00 00 00 00

1A DEF 9A 0A 00 03 00 00 00 01 00 00 00 04

1A CHG 9A 0A 00 03 00 00 00 00 00 00 00 00

1C DEF 9C 0A 10 00 00 00 00 00 00 00 00 01

1C CHG 9C 0A 9D 0F FF FF FF FF FF FF FF FF

00 DEF 80 06 00 00 07 00 00 00

00 CHG 80 06 FF 40 07 00 00 00

Read capacity data

15 22 C4 40 00 00 02 00

[1] Although byte 12, bit 7 (a0) is shown as changeable, the FSW function governed by that bit is not implemented by this drive.


9.4

SCSI bus conditions and miscellaneous features supported

Asynchronous SCSI bus conditions supported by the drive are listed below. These conditions cause the SCSI device to perform certain actions and can alter the SCSI bus phase sequence. Other miscellaneous operating features supported are also listed here. Refer to the SCSI Interface Product Manual for details.

Table 8: SCSI bus conditions and other miscellaneous features

Condition/feature supported by:

SCSI-2/SCSI-3

Y

Y

Y

Y

Y

N

Y

Y

Y

N

Y

Y

Y

N

Y

N

Y

Y

Conditions or feature

Adaptive Caching

Arbitrating System

Asynchronous Data Transfer

Asynchronous Event Notification

Attention Condition

Auto Contingent Allegiance Condition

Contingent Allegiance Condition

Deferred Error Handling

Disconnect/Reconnect

High voltage differential (HVD) interface available

Low voltage differential (LVD) interface available

Parameter Rounding (controlled by the Round bit in Mode Select page 0)

Queue tagging (up to 64 Queue tags supported)

Reporting actual retry count in Extended Sense bytes 15, 16 and 17.

Reset Condition

Segmented Caching

Synchronous Data Transfer

Zero Latency Read

SCSI-2/SCSI-3

Y

Y

Y

Y

Y

N

Y

Y

Y

Status supported

Good

Check Condition

Condition Met/Good

Busy

Intermediate/Good

Intermediate/Condition Met/Good

Reservation Conflict

Queue Full

ACA Active


9.5

Synchronous data transfer

9.5.1

Synchronous data transfer periods supported

The data transfer period to be used by the drive and the initiator is established by an exchange of messages during the Message Phase of operation. See the section on message protocol in the SCSI Interface Product

Manual, part number 75789509. In the following tables, M is the synchronous period value (in the transfer rate negotiation message) that represents the associated transfer period and transfer rate values.

Table 9 lists the synchronous data transfer periods supported by the drive in DT Data phase. DT Data phase is

only allowed when using theLVD interface.

9

10

12

25

Table 9:

M (decimal)

Synchronous DT Data transfer periods

Transfer period

(nanoseconds)

12.5

25

50

100

Transfer rate

(megatransfers/second)

80.0

40.0

20.0

10.0

Table 10 lists the synchronous data transfer periods supported by the drive in ST Data phase. ST Data phase

is allowed with either LVD or SE interface except as noted.

Table 10: Synchronous ST Data transfer periods

M (decimal)

10

12

25

50

Transfer period

(nanoseconds)

25

50

100

200

Transfer rate

(megatransfers/second)

40.0

20.0

10.0

5.0

1

1.

This transfer rate is only allowed when using the LVD interface.

9.5.2

REQ/ACK offset

Barracuda 180 family drives support REQ/ACK offset values from 7 to 63 (3Fh). Offsets 1 through 6 are negotiated to 0 (asynchronous transfer).

9.6

Physical interface

This section describes the connectors, cables, signals, terminators and bus timing of the DC and SCSI I/O

interface. See Section 9.8 and Section 9.9 for additional terminator information.

Figures 16 and 17 show the locations of the DC power connector, SCSI interface connector, drive select head-

ers, and option select headers.

Details of the physical, electrical and logical characteristics are given in sections following, while the SCSI operational aspects of Seagate drive interfaces are given in the SCSI Interface Product Manual .

9.6.1

DC cable and connector

ST1181677LW/LWV drives receive DC power through a 4 pin connector (see Figure 18 for pin assignment)

mounted at the rear of the main PCBA. Recommended part numbers of the mating connector are listed below, but equivalent parts may be used.

Type of cable

14 AWG

Connector

MP 1-480424-0

Contacts (20-14 AWG)

AMP 60619-4 (Loose Piece)

AMP 61117-4 (Strip)

LC/LCV model drives receive power through the 80-pin I/O connector. See Tables 14 and 15.


J1

Pin 1

Pin

1P

2P

3P

4P

J5

Pin 1A

Power

+12V

+12V ret

+ 5V ret

+ 5V

J1-DC Power

J5

Pin 1A

J1

Pin 1

68 Pin

SCSI I/O

Connector

4P 3P 2P 1P

PCB

Pin 1P

J1-DC Power

J2

J6

Figure 16.

ST1181677LW/LWV drive physical interface (68-pin J1 SCSI I/O connector)

80-pin

SCSI I/O

Connector

Pin 1

J2

J6

Figure 17.

ST1181677LC/LCV drive physical interface (80-pin J1 SCSI I/O connector)


9.6.2

SCSI interface physical description

The drive models described by this product manual support the physical interface requirements of the Ultra160

SCSI Parallel Interface-3 (SPI-3) standards as defined in American National Standard document T10/1302D, and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 standards. It should be noted that this is only true if the systems engineering has been correctly done, and if earlier SCSI-2 and SCSI-3 devices respond in an acceptable manner (per applicable SCSI Standards) to reject newer

Ultra160 protocol extensions that they don’t support.

The drives documented in this manual support single-ended and low voltage differential physical interconnects

(hereafter referred to as SE and LVD, respectively) as described in the ANSI SPI-3 standard. These drives implement driver and receiver circuits that can operate either SE orLVD. However, they cannot switch dynamically between SE and LVD operation.

The drives typically operate on a daisy-chain interface in which other SCSI devices are also operating. Devices on the daisy chain must all operate in the same mode, either SE or LVD, but not a mixture of these. On the interface daisy chain, all signals are common between all devices on the chain, or bus, as it is also called. This daisy chain of SCSI devices must be terminated at both ends with the proper impedance in order to operate correctly. Do not terminate intermediate SCSI devices. In some cases, the SCSI devices at each end have onboard termination circuits that can be enabled by installation of a jumper plug (TE) on the device. These termination circuits receive power from either a source internal to the device, or from a line in the interface cable specifically powered for that purpose. LC/LCV and LW/LWV model drives do not have onboard termination circuits. Some type of external termination circuits must be provided for these drives by the end user or designers of the equipment into which the drives will be integrated. See Standard T10/1302D, sections 6.6 and 6.7 for the maximum number of devices that can successfully operate at various interface transfer rates on SE and LVD daisy chains.

LC/LCV model drives plug into PCBA or bulkhead connectors in the host. They may be connected in a daisychain by the host backplane wiring or PCBA circuit runs that have adequate DC current carrying capacity to support the number of drives plugged into the PCBA or bulkhead connectors. A single 80-pin I/O connector cable cannot support the DC current needs of several drives, so no daisy chain cables beyond the bulkhead connectors should be used. A single drive connected via a cable to a host 80-pin I/O connector is not recommended.

Table 11 shows the interface transfer rates supported by the various drive models defined in this manual.

Table 11: Interface transfer rates supported

Maximum transfer rate

Interface type/ drive models

SE

Mode

LVD

Mode

ST1181677 LC/LCV

ST1181677 LW/LWV

ST1181677 LC/LCV

ST1181677 LW/LWV

Asynchronous Fast-5 yes yes yes yes

Fast-10 yes yes

Fast-20

(Ultra) yes yes

Fast-40

(Ultra2) no yes

Fast-80

(Ultra160) no yes

9.6.3

SCSI interface cable requirements

The characteristics of cables used to connect Ultra160 SCSI parallel interface devices are discussed in detail in section 6 of ANSI Standard T10/1302D. The cable characteristics that must be considered when interconnecting the drives described in this manual in a Ultra160 SCSI parallel, daisy-chain interconnected system are:

• characteristic impedance (see T10/1302D Section 6)

• propagation delay (see T10/1302D Section 6)

• cumulative length (see T10/1302D Section 6)

• stub length (see T10/1302D Section 6)

• device spacing (see T10/1302D Section 6)


To minimize discontinuances and signal reflections, cables of different impedances should not be used in the same bus. Implementations may require trade-offs in shielding effectiveness, cable length, number of loads and spacing, transfer rates, and cost to achieve satisfactory system operation. If shielded and unshielded cables are mixed within the same SCSI bus, the effect of impedance mismatch must be carefully considered.

Proper impedance matching is especially important in order to maintain adequate margin at FAST-20, FAST-

40, and FAST-80 SCSI transfer rates.

Note.

For LVD operation, twisted pair cables are recommended. For LVD Fast-40 operation, twisted pair cables are strongly recommended. For Fast-80 (Ultra160) operation, twisted pair cables are required .

ST1181677LC/LCV:

The 80-pin connector option is intended for use on drives that plug directly into backplane connector in the host equipment. In such installations, all backplane wiring segments are subject to the electromagnetic concepts presented in Standard T10/1302D, section 6. For LC/LCV model drives, installations with connectors on cables are not recommended.

9.6.4

Mating connectors

Part numbers for the different type connectors that mate with the various Barracuda 180 I/O connectors are given in the sections following.

9.6.4.1

Mating connectors for LW/LWV drives

The nonshielded cable connector shall be a 68 conductor connector consisting of two rows of 34 male contacts with adjacent contacts 0.050 inch (1.27 mm) apart.

Recommended mating flat cable connector part numbers are:

Amp Model 786096-7

Amp Model 786090-7

Amp Model 749925-5

Female, 68-pin, panel mount

Female, 68-pin, cable mount

(50 mil conductor centers, 28 or 30 AWG wire)

Use two, 34 conductor, 50 mil center flat cable with this connector.

This type connector can only be used on cable ends. [1]

Amp Model 88-5870-294-5 W/O Strain Relief (25 mil conductor centers, 30 AWG wire).

Use either on cable ends or in cable middle section for daisy-chain

installations. [1]

Amp Model 1-480420-0

Berg 69307-012

Power connector 4 circuit housing

12-position, 2 x 6, 2 mm receptacle housing

[1]

See Figure 18.

The drive device connector is a nonshielded 68 conductor connector consisting of two rows of 34 female pins

with adjacent pins 50 mils apart. The connector is keyed by means of its shape (see Figure 19).

9.6.4.2

Mating connectors for LC/LCV model drives

The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adja-

cent contacts 50 (1.27 mm) mils apart (see Figure 20). I/O connection using a cable is not recommended. The

length and size of the host equipment DC power carrying conductors from the DC power source to the host equipment 80-pin disk drive interface connector(s) should be strictly designed according to proper power transmission design concepts. No possibility for the equipment user to attach an 80-pin cable/connector should be allowed, since the length of the DC power carrying conductors could not be controlled and therefore could become too long for safe power transmission to the drive. Daisy-chain 80-conductor cables should especially not be allowed, since the power-carrying conductors on the 80-conductor interface were not intended to support a series of drives.

To insure that both drive connector and host equipment mating connector mate properly, both drive connector and host equipment mating connector must meet the provisions of “SFF-8451 Specification for SCA-2

Unshielded Connections.”


Recommended mating 80-position PCBA mount connectors:

Hot plug version (with ground guide-pin) Straight-in connector

Seagate P/N:

Amp US P/N: or

Amp US P/N:

77678703

2-557103-1

94-0680-02-1

2-557103-2 or 94-0680-02-2

Amp Japan P/N: 5-175475-9

787311-1

787311-2 with polarization without polarization

Right-angle to PCBA connectors

Seagate P/N:

Amp US P/N:

77678559

2-557101-1

Amp Japan P/N: 5-175474-9

For additional information call Amp FAX service at 1-800-522-6752.

“LW/LWV” Model

Drives

53

[6]

Terminator

[7]

2 through X

SCSI devices [4]

Pin 1

(check your adapter for Pin 1 location)

SCSI ID 1

[2]

SCSI ID 7 [5]

SCSI ID 0

[1]

Host Adapter

PCB

[3]

[2]

[1] Closed end type 68-pin connector used.Terminators enabled.

[2] Open end type (in-line application) connector used.

[3] Host need not be on the end of the daisy-chain. Another device can be on the end with the terminator, the host having no terminator.

[4] Total interface cable length must not exceed that specified in ANSI document T10/1302D (including host adapter/initiator). The cable length restriction limits the total number of devices allowed.

[5] SCSI ID7 has highest arbitration priority, then ID15 to ID8 (ID 8 very lowest).

[6] Last drive on the daisy chain.

[7] Open-end type 68-pin connector used. If end device, use external terminator and closed-end type 68-pin connector.

Figure 18.

SCSI daisy chain interface cabling for LW/LWV drives

54

.155

.050

.022

1.650


3.650

±

.005

.346

.3937

.0787

.020

.270

.600

.200

.047

.100

(2.54)

.218

(5.54)

.050

(1.27)

Pos. 68

.980

(24.89)

1.650

(41.91)

1.816

(46.13)

.60

(15.24)

Position 1

Pos. 35

1.368

(37.74)

3.650

(92.71)

.0787

(2.00)

.519

(13.18)

.315

(8.00)

Pos.

1

4

Pos.

1

3 2

.840

±

.005

(21.34)

Pos.

2

.767

(19.48)

1

.20

(5.08) typ

.085

(2.16) x 45

° chamfer typ

.315

±

.010

(8.00)

+.001

.083

(2.1)

–.002

dia

Trifurcated Pins

(4 places)

Figure 19.

Nonshielded 68 pin SCSI device connector used on LW/LWV drives


Grounding

Pins

0.15 M Y M

–Y–

57.87

(2.278)

[

0

–0.15

+ .000

– .006

[

7.00

(.276)

12.70

(.500)

End View

2.15

±

0.10

2 places

Front View

Pin 1

62.15

(2.447)

±

0.15

(

±

.005)

0.15 M Y M

Housing

X

Insert mating

I/O connector

Top View

Contact

0.50

(.020)

0.3

(.012)

M Y M

Pin 1

1.27

(.05)

Typ

X

Pin 40

Grounding

Pins

Pin 41 Pin 80

Figure 20.

Nonshielded 80 pin SCSI “SCA-2” connector, used on LC/LCV drives

Back View

55


Signal

name [1]

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

TermPwr

TermPwr

Reserved

GND

GND

GND

GND

Table 12:

LW/LWV 68-conductor single-ended (SE) P cable signal/pin assignments [13]

Note.

A minus sign preceding a signal name indicates that signal is active low.

Connector contact

number [3]

5

6

7

28

29

30

31

24

25

26

27

32

33

34

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

1

2

3

4


number [3]

39

40

41

62

63

64

65

58

59

60

61

66

67

68

54

55

56

57

50

51

52

53

46

47

48

49

42

43

44

45

35

36

37

38

Signal

name [1]

–DB12

–DB13

–DB14

–DB15

–DBP1

–DB0

–DB1

–ACK

–RST

–MSG

–SEL

–C/D

–REQ

–I/O

–DB8

–DB9

–DB10

–DB11

–DB2

–DB3

–DB4

–DB5

–DB6

–DB7

–DBP

GND

GND

TermPwr

TermPwr

Reserved

GND

–ATN

GND

–BSY

Notes [ ]: See page following Table 15.


Signal

name [1]

+DB12

+DB13

+DB14

+DB15

+DBP1

+DB0

+DB1

+ACK

+RST

+MSG

+SEL

+C/D

+REQ

+I/O

+DB8

+DB9

+DB10

+DB11

+DB2

+DB3

+DB4

+DB5

+DB6

+DB7

+DBP

Ground

DIFFSNS [8]

TermPwr

TermPwr

Reserved

Ground

+ATN

Ground

+BSY

Table 13:

LW/LWV 68-conductor LVD P cable signal/pin assignments [13]

Note.



number [3]

5

6

7

28

29

30

31

24

25

26

27

32

33

34

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

1

2

3

4


number [3]

39

40

41

62

63

64

65

58

59

60

61

66

67

68

54

55

56

57

50

51

52

53

46

47

48

49

42

43

44

45

35

36

37

38

Signal

name [1]

–DB12

–DB13

–DB14

–DB15

–DBP1

–DB0

–DB1

–ACK

–RST

–MSG

–SEL

–C/D

–REQ

–I/O

–DB8

–DB9

–DB10

–DB11

–DB2

–DB3

–DB4

–DB5

–DB6

–DB7

–DBP

Ground

Ground

TermPwr

TermPwr

Reserved

Ground

–ATN

Ground

–BSY


57


Table 14:

LC/LCV 80-pin single-ended (SE) I/O connector pin assignments [13]

Note.


Signal

name [1]


number [3]

12 V CHARGE

12 V

12 V

12 V

NC [10]

NC [10]

–DB11

5

6

7

–RST

–ACK

–BSY

–ATN

–DBP

–DB7

–DB6

–DB5

–DB10

–DB9

–DB8

–I/O

–REQ

–C/D

–SEL

–MSG

–DB4

–DB3

–DB2

–DB1

–DB0

–DP1

–DB15

–DB14

–DB13

–DB12

+5 V

+5 V

+5 V

NC [10]

36

37

RMT-START [5] [9]

38

SCSI ID (0) [7] [9]

39

SCSI ID (2) [7] [9]

40

32

33

34

35

28

29

30

31

24

25

26

27

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

1

2

3

4

Signal

number [3]

45

46

47

76

77

78

79

80

72

73

74

75

68

69

70

71

64

65

66

67

60

61

62

63

56

57

58

59

52

53

54

55

48

49

50

51

41

42

43

44

Contact

name[1]

12 V GND

12 V GND

12 V GND

MATED 1

NC [10]

DIFFSNS [8]

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

MATED 2

5 V GND

5 V GND

ACTIVE LED OUT [4] [9]

DLYD-START [6] [9]

SCSI ID (1) [7] [9]

SCSI ID (3) [7] [9]



Table 15:

LC/LCV 80-pin single-ended (LVD) I/O connector pin assignments [13]

Note.


Signal

name [1]


number [3]

12 V CHARGE

12 V

12 V

12 V

NC [10]

NC [10]

–DB11

5

6

7

–RST

–ACK

–BSY

–ATN

–DBP

–DB7

–DB6

–DB5

–DB10

–DB9

–DB8

–I/O

–REQ

–C/D

–SEL

–MSG

–DB4

–DB3

–DB2

–DB1

–DB0

–DBP1

–DB15

–DB14

–DB13

–DB12

+5 V

+5 V

+5 V CHARGE

NC [10]

36

37

RMT_START [5] [9]

38

SCSI ID (0) [7] [9]

39

SCSI ID (2) [7] [9]

40

32

33

34

35

28

29

30

31

24

25

26

27

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

1

2

3

4

Signal

number [3]

45

46

47

76

77

78

79

80

72

73

74

75

68

69

70

71

64

65

66

67

60

61

62

63

56

57

58

59

52

53

54

55

48

49

50

51

41

42

43

44

Contact

name[1]

12 V GND

12 V GND

12 V GND

MATED 1

NC [10]

DIFFSNS [8]

+DB11

+RST

+ACK

+BSY

+ATN

+DBP0

+DB7

+DB6

+DB5

+DB10

+DB9

+DB8

+I/O

+REQ

+C/D

+SEL

+MSG

+DB4

+DB3

+DB2

+DB1

+DB0

+DP1

+DB15

+DB14

+DB13

+DB12

MATED 2

5 V GND

5 V GND

ACTIVE LED OUT [4] [9]

DLYD_START [6] [9]

SCSI ID (1) [7] [9]

SCSI ID (3) [7] [9]

Notes [ ]: See page following this table.

59


Notes [ ] for Tables 12 through 15.

[1]

See Section 9.6.4.1 for detailed electrical characteristics of these signals.

[2] The conductor number refers to the conductor position when using 0.025-inch (0.635 mm) centerline flat ribbon cable. Other cables types may be used to implement equivalent contact assignments.

[3] Connector contacts are on 0.050 inch (1.27 mm) centers.

[4] Front panel LED signal; indicates drive activity for host front panel hard drive activity indicator.

[5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command).

[6] Asserted by host to enable Delayed Motor Start option (motor starts at power on or after a delay of 12 sec-

onds times drive ID). This and [3] above are mutually exclusive options.

[7] Binary code on A3, A2, A1 and A0 asserted by host to set up SCSI bus ID in drive.

[8] GND provides a means for differential devices to detect the presence of a single ended device on the bus.

Drive will not operate I/O bus at Ultra2 or Ultra160 SCSI data rates if this is grounded.

[9] Signals [4] through [7] are used in place of installing jumpers and cables on option select connectors J2 and J6. See Section 8.1.1 notes.

[10] “NC” means no connection.

[11] The conductor number refers to the conductor position (right to left in Figure 18) when using 0.050 inch

(1.27 mm) centerline flat ribbon cable. Other cable types may be used to implement equivalent contact assignments.

[12] Connector contacts are on 0.100 inch (2.54 mm) centers.

[13] 8 bit devices which are connected to the 16 data bit LVD I/O shall leave the following signals open: –DB8,

–DB9, –DB10, –DB11, –DB12, –DB13, –DB14, –DB15, and –DBP1.

8 bit devices which are connected to the 16 data bit single-ended (SE) I/O shall have the following signals open: DB8, –DB9, –DB10, –DB11, –DB12, –DB13, –DB14, –DB15, and –DBP1.

All other signals should be connected as shown.

9.7

Electrical description

Barracuda 180 drives are multimode devices. That is, their I/O circuits can operate as either single-ended or low voltage differential drivers/receivers (selectable using the I/O DIFFSNS line).

See ANSI Standard T10/1302D for details electrical specifications.

9.7.1

Multimode—SE and LVD alternatives

When the interface DIFFSNS line is between +0.35 V and +0.5 V, the drive interface circuits operate singleended and up to and including 20 M transfers/s (Fast-20 or Ultra SCSI). When DIFFSNS is between +0.7 V and +1.9 V, the drive interface circuits operate low voltage differential and up to and including 80 M transfers/s or less (Fast-40 or Ultra160 SCSI).

This multimode design does not allow dynamically changing transmission modes. Drives must operate only in the mode for which the installation and interface cabling is designed. Multimode I/O circuits used by these drives do not operate at high voltage differential levels and should never be exposed to high voltage differential environments unless the common mode voltages in the environment are controlled to safe levels for singleended and low voltage differential devices (see the ANSI SPI-3 specification T10/1302D).

Multimode signals

Multimode circuit SE alternative signal characteristics are the same as described elsewhere in Section 9.7.1.

The SE alternative for these circuits is selected as described above. SE cables and termination must be used.

These drives do not have onboard terminators. The Multimode signal lines (either SE or LVD) should be terminated with 110 ohm active terminator circuits at each end of the total cable. Termination of the I/O lines must be provided for by the Host equipment designers or end users.

The SE and differential alternatives are mutually exclusive.


Output characteristics

Each signal (V s

) driven by LVD interface drivers shall have the following output characteristics when measured at the disc drive connector:

Steady state Low level output voltage* = –.95 V = < V s

= < –1.55 V (signal negation/logic 0)

Steady state High level output voltage* = –.95 V = < V s

= < 1.55 V (signal assertion/logic 1)

Differential voltage = +0.6 V minimum with common-mode voltage ranges 0.700 V = < V cm

= < 1.800 V.

*These voltages shall be measured between the output terminal and the SCSI device’s logic ground reference.

The output characteristics shall additionally conform to EIA RS-485.

LVD Differential

Driver

Signal +

1.55V

–15ma

V

0

= True / Logic 1 / Assertion

.95V

+15ma

Signal –

LVD Differential

Driver

Signal +

Signal –

.95V

1.55V

+15ma

–15ma

V

0

= False / Logic 0 / Negation

|V

0

| = .6V

Figure 21.

LVD output signals

Input characteristics

Each signal (Vs) received by LVD interface receiver circuits shall have the following input characteristics when measured at the disk drive connector:

Steady state Low level output voltage* = 0.030 V = < V s

= < 3.6 V (signal negation/logic 0)

Steady state High level output voltage* = –3.6 V = < V s

= < –0.030 V (signal assertion/logic 1)

Differential voltage = +0.30 V minimum with common-mode voltage ranges 0.700 V = < V cm

(X3T10/1302D Annex A)

= < 1.800 V.

*These voltages shall be measured between the output terminal and the SCSI device’s logic ground reference.

Input characteristics shall additionally conform to EIA RS-485-983.

VCCB

Single

Ended

Circuitry

VCCA

LVD Signal Drivers

LVD

Receiver

Single

Ended

Receiver

Single

Ended

Negation

Driver

Single

Ended

Ground

Driver

LVD Signal Drivers

Ground

Single Ended:

LVD:

GND

+Signal

Figure 22.

Typical SE-LVD alternative transmitter receiver circuits

–Signal

–Signal

Single

Ended

Assertion

Driver


9.7.1.1

Single-ended drivers/receivers

The maximum total cable length allowed with drives using single-ended I/O driver and receiver circuits

depends on several factors. Table 16 lists the maximum lengths allowed for different configurations of drive

usage. These values are from the SPI-3 document. All device I/O lines must have equal to or less than 25 pf capacitance to ground, measured at the beginning of the stub.

Table 16: Cable characteristics for single-ended circuits

I/O transfer rate

<10M transfers/s

<20M transfers/s

<20M transfers/s

Maximum number of devices on the bus

16 (wide SCSI bus)

4 (wide SCSI bus)

8 (wide SCSI bus)

Maximum cable length allowed

6 meters (19.7 ft)

3 meters (9.8 ft)

1.5 meters (4.9 ft)

Transmission line impedance

REQ/ACK

90 + 6 Ohms

90 + 6 Ohms

90 + 6 Ohms

Other signals

90 + 10 Ohms

90 + 10 Ohms

90 + 10 Ohms

A stub length of no more than 0.1 meter (0.33 ft) is allowed off the mainline interconnection with any connected equipment. The stub length is measured from the transceiver to the connection to the mainline SCSI bus.

Single-ended I/O cable pin assignments for LW/LWV drives are shown in Table 13.

Single-ended I/O pin assignments for the LC/LCV models are shown in Table 14. The LC/LCV models do not

require an I/O cable—they are designed to connect directly to a back panel connector.

9.7.1.2

Low voltage differential I/O circuits

The maximum total cable length for use with drives using LVD I/O drivers and receiver circuits is 12 meters

(39.37 ft.). A stub length of no more than 0.1 meter is allowed off the mainline interconnection with any con-

nected equipment. LVD I/O pin assignments for LW/LWV model drives are shown in tables 12 and 13. LVD I/O

pin assignments for LC/LCV model drives are shown in tables 14 and 15.

9.7.1.3

General cable characteristics

A characteristic impedance of 100 ohm + 10% is recommended for unshielded flat or twisted pair ribbon cable.

However, most available cables have a somewhat lower characteristic impedance. To Minimize discontinuities and signal reflections, cables of different impedances should not be used in the same bus. Implementations may require tradeoffs in shielding effectiveness, cable length, the number of loads, transfer rates, and cost to achieve satisfactory system operation. If shielded and unshielded cables are mixed within the same SCSI bus, the effect of impedance mismatch must be carefully considered. Proper impedance matching is especially important in order to maintain adequate margin at fast SCSI transfer rates.

9.8

Terminator requirements

Caution: These drives do not have onboard internal terminators. The user, systems integrator or host equipment manufacturer must provide a terminator arrangement external to the drive when termination is required. For LW/LWV drives, terminator modules can be purchased that plug between the SCSI I/

O cable and the drive I/O connector or on the end of a short I/O cable stub extending past the last cable connector. LC/LCV drives are designed to be plugged into a backpanel connector without cabling.

9.9

Terminator power

LW/LWV drives

You can configure terminator power from the drive to the SCSI bus or have the host adaptor or other device

supply terminator power to the external terminator. See Section 8.1 for illustrations that show how to place

jumpers for this configuration.

LC/LCV drives

These drives cannot furnish terminator power because no conductors in the 80-pin I/O connector are devoted to terminator power.


9.10

Disc drive SCSI timing

Table 17: Disc drive SCSI timing

Description

Target Select Time (no Arbitration)

Target Select Time (with Arbitration)

Target Select to Command

Target Select to MSG Out

Identify MSG to Command

Command to Status

Command to Data (para. In)

Command to Data (para. Out)

Command to Data (Write to Data Buffer)

Command to Disconnect MSG

Disconnect MSG to Bus Free

Disconnect to Arbitration (for Reselect)

This measures disconnected CMD overhead

Target win Arbitration (for Reselect)

Arbitration to Reselect

Reselect to Identify MSG In

Reselect Identify MSG to Status

Reselect Identify MSG to Data (media)

Data to Status

Status to Command Complete MSG

Command Complete MSG to Bus Free

Data to Save Data Pointer MSG

Save Data Pointer MSG to Disconnect MSG

Command Byte Transfer

Next Command Byte Access:

Next CDB Byte Access (Byte 2 of 6)














T12

T13

T14

T15

T16

T17

T18

T19

T20

T21

T22

T23.6.2

T23.6.3

T23.6.4

T23.6.5

T23.6.6

T23.10.2

T23.10.3

T23.10.4

T23.10.5

T23.10.6

T23.10.7

T23.10.8

T23.10.9

T23.10.10

Waveform

symbol [1]

T00

T01

T02

T03

T04

T05

T06

T07

T08

T09

T10

T11

Waveform

table [1]

N/A

4.5-1,2

4.5-1

4.5-2

4.5-3

4.5-5

4.5-9

4.5-10

4.5-10

4.5-6

4.5-6,14

4.5-6

4.5-14

4.5-14

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-7

4.5-7

4.5-7

4.5-8

4.5-11

4.5-15

4.5-5,8,15

4.5-5,8,15

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

4.5-4

63

0.58

µ s

0.12

µ s

0.12

µ s

0.12

µ s

0.12

µ s

0.59

µ s

0.11

µ s ±1

µ s

0.12

µ s ±1

µ s

0.11

µ s ±1

µ s

0.11

µ s ±1

µ s

0.13

µ s ±1

µ s

0.12

µ s ±1

µ s

0.12

µ s ±1

µ s

0.12

µ s ±1

µ s

Typical timing

<1

µ s

1.93

µ s

3.77

µ s

1.57

µ s

3.36

µ s

Command Dependent

Command Dependent

Command Dependent

Command Dependent

Command Dependent

0.52

µ s

Command Dependent

3.00

µ s

1.60

µ s

1.39

µ s

Command Dependent

Command Dependent

Command Dependent

0.98

µ s

0.51

µ s

4.00

µ s

0.79

µ s

0.04

µ s


Table 17: Disc drive SCSI timing (Continued)

Description

Data In Byte Transfer (parameter)

Data Out Byte Transfer (parameter)

Next Data In Byte Access (parameter)

Next Data Out Byte Access (parameter)

Data In Byte Transfer (media) [2]

Data Out Byte Transfer (media) [2]

Next Data In Byte access (media [2]

Next Data Out Byte access (media [2]

MSG IN Byte Transfer

MSG OUT Byte Transfer

STATUS Byte Transfer

Synchronous Data Transfer Characteristics:

Request Signal Transfer Period [3]

Waveform symbol [1]

T24

T25

T26

T27

T28

T29

T30

T31

T32

T33

T34

–

Waveform table [1] Typical timing

4.5-12

4.5-13

4.5-12

4.5-13

4.5-12

4.5-13

4.5-12

4.5-13

0.04

µ s

0.04

µ s

0.12

µ s

0.12

µ s

0.04

µ s

0.04

µ s

0.12

µ s

0.12

µ s

4.5-5,7,8,14,15 0.04

µ s

4.5-2 0.04

µ s

4.5-5,8,15 0.04

µ s

– various (800 ns max)

Notes.

[1] See the SCSI Interface Product Manual.

[2]

Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3 of this manual.

[3] Synchronous Transfer Period is determined by negotiations between an Initiator and a Drive. The Drive is

capable of setting periods as given in Section 9.5. See also the

SCSI Interface Product Manual for a description of synchronous data transfer operation.

9.11

Drive activity LED

The following table provides drive activity LED status.

Table 18: Drive activity LED status

Spindle status Command status LED status

Spinning up with DC power applied N/A

Spun down Start Unit

Powered down by removal of DC power N/A

Spun up

Spun down

Spun down

Spun down

Stop Unit

No command activity

Write/Read Buffer

SCSI Bus Reset

Spun down

Spun up

Spun up

Spun up

Spun up

Spun up

Spun up

Test Unit Ready

No command activity

Write/Read

SCSI Bus Reset

On until spinup is complete

On while processing the command

Off due to absence of power


Off


On while processing the reset


Off


On while processing the reset

Test Unit Ready On while processing the command

Format with Immediate option on On while the command is initially processed

Format without Immediate LED toggles on/off on each cylinder boundary


10.0

Seagate Technology support services

Online Services

Internet

www.seagate.com for information about Seagate products and services. Worldwide support is available 24 hours daily by e-mail for your disc or tape questions.

Presales Support:

Disc: www.seagate.com/support/email/email_presales.html

or [email protected].

Tape: www.seagate.com/support/email/email_tape_presales.html


Technical Support:

Disc: www.seagate.com/support/email/email_disc_support.html

Tape: www.seagate.com/support/email/email_tape_support.html

or or

[email protected].

[email protected].

Server Appliance: www.seagate.com/support/email/email_nas_support.html


Reseller Marketplace

Reseller Marketplace is the storage industry’s first collaborative, e-commerce marketplace offering resellers the fastest, most efficient online purchasing process for Seagate storage solutions. The Reseller Marketplace at marketplace.seagate.com, an exclusive service for US resellers participating in the Seagate Partner Program (SPP), is designed to streamline the purchasing process of Seagate solutions and provide unprecedented value to Seagate’s resellers through real-time pricing and availability, fast and easy comparison shopping, and seamless integration with key distributors for a one-stop shopping experience.

For support, questions and comments: reseller.seagate.com/benefits/T1.html or 1-877-271-3285 (toll-free) 9

A .

M . to 7 P .

M . (eastern time) Monday through Friday.

Tape Purchases

US customers can purchase Seagate data cartridges, tape supplies, accessories, and select Seagate tape drive products 24 hours daily at buytape.seagate.com.

SeaBOARD

® is a computer bulletin board system that contains information about Seagate disc and tape drive products and is available 24 hours daily. Set your communications software to eight data bits, no parity and one stop bit (8-N-1).

Automated Services

SeaFONE ® (1-800-SEAGATE) is Seagate’s toll-free number (1-800-732-4283) to access our automated selfhelp services. Using a touch-tone phone, you can find answers to service phone numbers, commonly asked questions, troubleshooting tips and specifications for disc drives and tape drives 24 hours daily. International callers can reach this service by dialing +1-405-936-1234.

SeaFAX ® is Seagate’s automated FAX delivery system. Using a touch-tone phone, you can obtain technical support information by return FAX 24 hours daily. This service is available worldwide.

Presales Support


Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system.


Technical Support

If you need help installing your drive, consult your dealer. Dealers are familiar with their unique system configurations and can help you with system conflicts and other technical issues. If you need additional help, you can talk to a Seagate technical support specialist. Before calling, note your system configuration and drive model number (ST####).

SeaTDD™ (+1-405-936-1687) is a telecommunications device for the deaf (TDD). You can send questions or comments 24 hours daily and exchange messages with a technical support specialist from 8:00 A .

M . to

11:45 A .

M . and 1:00 P .

M . to 6:00 P .

M . (central time) Monday through Friday.

Customer Service (CSO)

Warranty Service

Seagate offers worldwide customer support for Seagate drives. Seagate direct OEM, Distribution and System

Integrator customers should contact their Seagate service center representative for warranty information.

Other customers should contact their place of purchase.

Authorized Service Centers

If you live outside the US, you can contact an Authorized Service Center for service.

USA/Canada/Latin America Support Services


Call Center

Disc:

Tape:

Server Appliance:

Toll-free

1-877-271-3285

1-800-626-6637

1-800-732-4283

Direct dial

+405-936-1210

+1-714-641-2500

+1-405-936-1234

FAX

+1-405-936-1683

+1-714-641-2410

+1-405-936-1683

Technical Support (SeaFONE)

1-800-SEAGATE or +1-405-936-1234 (for specific product phone number)

FAX: Disc: +1-405-936-1685; Tape and Server Appliance: +1-405-936-1683

SeaFAX

SeaTDD

SeaBOARD

1-800-SEAGATE

+1-405-936-1687

Disc: +1-405-936-1600; Tape: +1-405-936-1630


Call Center

USA

Mexico and Latin America

Canada

Memofix *

Toll-free

1-800-468-3472

—

1-800-636-6349

Direct dial

+1-405-936-1456

+1-405-936-1456

+1-905-660-4936 or

Adtech* 1-800-624-9857 +1-905-812-8099 or

FAX / Internet

+1-405-936-1462

+1-405-936-1464

+1-905-660-4951 www.memofix.com

+1-905-812-7807 www.adtech1.com

Brazil

MA Centro de Serviços* — +55-21-509-7267 +55-21-507-6672 e-mail: [email protected]

*Authorized Service Centers


European Support Services

For European customer support, dial the toll-free number for your specific country for presales support, technical support, SeaFAX and warranty service.

If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 A .

M . to 5:00 P .

M .

(European central time) Monday through Friday. The European call center is located in Amsterdam, The Netherlands.

Call Center

Austria

Belgium

Denmark

France

Germany

Ireland

Italy

Netherlands

Norway

Poland

Spain

Sweden

Switzerland

Turkey

United Kingdom

0 800-20 12 90

0 800-74 876

80 88 12 66

0 800-90 90 52

0 800-182 6831

1 800-55 21 22

800-790695

0 800-732 4283

800-113 91

00 800-311 12 38

900-98 31 24

0 207 90 073

0 800-83 84 11

00 800-31 92 91 40

0 800-783 5177

SeaBOARD

Germany +49-89-1409331

Fax Services—All European Countries

Presales/Technical Support/Warranty Service 31-20-653-3513

Africa/Middle East Support Services

For presales, technical support, warranty service and FAX services in Africa and the Middle East, dial our

European call center at +31-20-316-7222 from 8:30 A .

M . to 5:00 P .

M . (European central time) Monday through

Friday, or send a FAX to +31-20-653-3513. The European call center is located in Amsterdam, The Netherlands.

Asia/Pacific Support Services

For Asia/Pacific presales and technical support, dial the toll-free number for your specific country. The Asia/

Pacific toll-free numbers are available from 6:00 A .

M . to 10:45 A .

M . and 12:00 P .

M . to 6:00 P .

M . (Australian eastern time) Monday through Friday. If your country is not listed here, direct dial one of our technical support locations.

Call Center

Australia

China

Hong Kong

Indonesia

Japan

Malaysia

New Zealand

Singapore

Taiwan

Thailand

Toll-free

1800-14-7201

—

800-90-0474

001-803-1-003-2165

—

1-800-80-2335

0800-443988

800-1101-150

—

001-800-11-0032165

Direct dial

—

—

—

—

—

—

—

+65-488-7584

+886-2-2514-2237

—

FAX

—

+86-10-6871-4316

+852-2368 7173

—

+81-3-5462-2979

—

—

+65-488-7528

+886-2-2715-2923

—

68


Call Center

Asia/Pacific

Australia

Japan

Toll-free

—

1800-12-9277

—

Direct dial

+65-485-3595

—

+81-3-5462-2904


FAX

+65-488-7503

—

+81-3-5462-2979


Index

Symbols

+5 and +12 volt supplies

21

Numerics

68 conductor connector

52

68-pin connector

53

80 conductor connector

52

80 conductor interface

52

80 pin connector option

52

80 pin I/O connector

58 ,

59

A

AC power

21

access time

9

accessories

8

acoustics

28

activity indicator

60

activity LED

64

actuator

7 ,

38

actuator assembly

5

address

10

air cleanliness

28

air flow

25 ,

38

suggested

38

air inlet

38

altitude

26

altitude and atmospheric pressure

25

ambient

25

ambient temperature

25

, 38

ANSI SCSI documents

4

arbitration priority

53

asynchronous interface transfer rate

64

audible noise

3

Australia/New Zealand Standard

4

automatic retry

13

automatic shipping lock

5

average idle current

21

average latency

7

average rotational latency

9

, 10

B background processing

7

backward compatibility

5

bits/inch

9

buffer

10 ,

11 ,

12

buffer segment

11 ,

12

buffer-full

11

buffer-full ratio

11

bulkhead connector

51

bus device reset message

46

bus fairness

7

bytes per sector

44

bytes/surface

9

bytes/track

9

C cabinet cooling

38

cable

49

cache

10 ,

11 ,

12

cache buffer

7

cache miss

11

cache mode

10

cache operation

10

cache operation hit

12

cache segment

11

caching write data

11

Canadian Department of Communications

3

capacities

8

capacity, drive, programmable

8

case temperature

25

CE Marking

3

changeable bit

47

changeable value

46

check condition

46

circuits

61

class B limit

3

command

10 ,

42

command descriptor block (CDB)

10

command queuing

7

condensation

25

conducted noise immunity

21 ,

22

connect/disconnect

10

connector

49

connector contact

60

consecutive read operation

12

contiguous blocks of data

12

continuous vibration

28

controller

10

controller overhead

9

controller self test

22

cooling

38

C-Tick Marking

3

current

22

current limiting

22

current profile

22

current profile (LVD mode)

23

current profile (SE mode)

23

current requirements

21

current value

46 ,

47

cylinder boundary

12

D daisy-chain

22 ,

51 ,

53

80 conductor

52

data correction

13

data transfer period

49

data transfer protocol

7

data transfer rate

9

DC cable and connector

49

69

70

DC current

51

DC power

10 ,

13 ,

37 ,

49

DC power carrying conductor

52

DC power connector

49

DC power requirements

21

DC power source

52

dedicated landing zone

5

default

36

, 37

default mode parameter

33

default value

46 ,

47

defect/error management

31

delayed motor start option

21 ,

60

delayed start

37

depot repair

15

depot repair philosophy

15

diagnostics

22

differential I/O circuit

37

differentiating features

5

dimensions

29

disable read ahead

12

disc access

10

disc media

9

disc rotational speed

9

disconnect/reconnect

11

control

11

specification

11

discontinuity (DISC) bit

12

DRA bit

12

drive

28

drive activity

60

drive activity LED

64

drive capacity

9

programmable

8

drive default mode parameter

33

drive failure

14

drive firmware

46

drive ID

33

drive ID select jumper connector

33

drive ID/option select header

33

drive interface connector

52

drive internal

22

drive internal defects and errors

31

drive malfunction

14

drive mounting

29 ,

39

constraints

13

drive orientation

38

drive power

33

drive primary defects list

31

drive SCSI timing

63

drive select header

49

drive self test

7

, 17

drive spindle

37

drive transfer

11

drive volume

33

drive warranty

15

DST.

See drive self test dynamic spindle brake

7


E

ECC

13

ECC correction capability

7

electrical characteristics

49

, 60

electromagnetic compatibility

3

electromagnetic interference (EMI)

13

electromagnetic susceptibility

28

embedded servo

7

EMC compliance

3

EMI requirements

3

environment

38

environmental control

28

environmental interference

13

environmental limits

25

environmental requirements

13

EPROM

46

equipment malfunction

13

error

13

error management system

32

error rate

13

error rate calculation

13

error recovery

31

ETF defect list

31

European Union requirements

3

EVPD bit

45

execution time

10

extended messages

41

F fairness

7

fault status

13

FCC rules and regulations

3

field repair

15

firmware

46

flat ribbon cable

60

flaw reallocation

10

format

44

format command

9

format time

10

formatted

8

formatting

33

front panel

29

front panel LED

60

FSW function

47

G

GMR heads

5

gradient

25

ground return

21

grounding

39

H hard reset

46

hardware error

13

HDA

5 ,

15

, 38 ,

39


head and disc assembly.

heat removal

38

heat source

38

high level format

33

See HDA host

12

, 31 ,

37 ,

44

, 51 ,

53

host adapter

33

adapter/initiator

53

host backplane wiring

51

host equipment

39 ,

52

DC power

52

host I/O signal

33

host system

33

host system malfunction

13

host/drive operational interface

13

hot plug

7 ,

15

humidity

25

I

I/O connector

51

identified defect

31

idle condition

24

Input characteristics

61

inquiry command

45

inquiry vital product data

45

installation

33

installation guide

8

installation instructions

33

instantaneous current peak

21

integrated Ultra160 SCSI controller

7

interface cable length

53

interface data

9

interface requirements

41

interface timing

13

internal data rate

9

J

J1-auxiliary

33

jumper

8

, 33 ,

36 ,

37

, 60

jumper function description

37

jumper header

36

jumper plug type

33

K

Korean certification

4

L landing zone

7

LB

11

LED

64

logical

10

logical block

10 ,

11

, 12

logical characteristics

49

logical segment (mode select page 08h)

10

low level format

33

low voltage differential (LVD) drivers and receivers

7

LVD

61

LVD interface receiver circuits

61

LVD output signals

61

M magnetoresistive heads

5

mating connector

49

,

52

mating flat cable connector

52

maximum current requirements

22

maximum operating current

21

maximum starting current

21

ME jumper

37

mean time between failure.

media

7 ,

46

See MTBF media defect

13

media defect induced error

13

medium error

13

message protocol

49

message protocol system

32

messages

SCSI interface

41

miscellaneous features

48

mode page 01

46

mode page 08h

10

mode parameter

46

page 08h

12

mode select command

10 ,

46

mode select page 08h

12

mode sense command

46

, 47

mode sense command page 08h

11

mode sense data

46

mode sense value

46

model number table

5

motor start command

10

motor start delay option

60

motor start option

10 ,

21 ,

60

mounting configuration

29

mounting configuration dimensions

29 ,

30

mounting constraints

13

, 39

mounting point

39

mounting surface

39

mounting surface distortion

39

mounting surface stiffness

39

MTBF

13 ,

14 ,

25

multimode drivers and receivers

7

multiple segment

11

multi-segmented cache control

10

N noise

22

audible

3

non-operating

25 ,

26 ,

28

temperature

25

non-operating vibration

28

nonshielded 68 conductor connector

52

71

72

O office environment

28

operating

25 ,

26

, 28

operating environment

14

operating option

33

operating parameter

46

operator intervention

13

option jumper

33

option jumper location

33

option select header

49

option select jumper

33

options

8

orientation

10 ,

26

, 38

out-of-plane deflection

39

out-of-plane distortion

39

Output characteristics

61

P package size

26

package test specification

4

packaged

26

parity

37

parity checking

37

parity error

37

partition or logical drive

33

PCB

15

PCBA

33

, 36

, 39 ,

46 ,

49 ,

51 ,

53

PCBA circuit run

51

PD jumper

37

peak bits/inch

9

peak starting current

21

performance characteristics

9

performance degradation

26

peripheral I/O cable

22

physical buffer space

10

physical characteristics

49

physical damage

28

physical interface

49 ,

50

physically contiguous blocks of data

12

power

21

, 22

, 37

power connector

21

, 22

power control switch

10

power dissipation

24

power distribution

3

power sequencing

22

power supply voltage

13

power-carrying conductor

52

power-on

33 ,

60

power-on operating hours

14

power-on reset

46

power-up

22 ,

37

power-up hours

14

prefetch

10

, 11 ,

12

prefetch (read look-ahead)

10 ,

12

prefetch ceiling field

12

prefetch data

12

Barracuda 180 Product Manual, Rev. C prefetch field

12

prefetch hit

12

prefetch mode

10

prefetch of contiguous blocks

12

prefetch operation

10 ,

12

prefetch segmented cache control

10

preventive maintenance

13

, 15

PRML read channel electronics

5

product data page

45

programmable drive capacity

8

R radio interference regulations

3

read

10

read command

10 ,

11

, 12

read data

11

read error

13

read error rate

13 ,

31

read operation

11

read retry count

31

read/write head

9

ready

46

receive diagnostic results

32

receiver circuits

61

recommended mounting

27

recoverable seek error

13

reference documents

4

regulation

21

relative humidity

25

reliability

7

reliability and service

14

reliability specifications

13

remote switch

33

repair facility

15

repair information

19

REQ/ACK offset

49

request sense command

32

request sense information

14

resonance

26

retrieved data

11

S

S.M.A.R.T.

7

, 16

safe power transmission

52

safety

3

saved value

46

, 47

SCSI commands

42

format commands

13

interface data transfer rate

9

messages

41

SCSI bus cable

33

SCSI bus condition

48

SCSI bus fairness

7

SCSI bus ID

60

SCSI bus phase sequence

48

SCSI command

31


SCSI I/O connector

50

SCSI ID

33

, 37

SCSI interface

10 ,

13

, 51

SCSI interface cable

51

SCSI interface commands supported

42

SCSI interface connector

49

SCSI interface data

9

SCSI Interface Product Manual

3 ,

4 ,

5

SCSI systems error

32

SCSI systems error consideration

31

SCSI systems error management

32

SCSI-1 mode

42

SE

60

Seagate support service

33

sector

11

sector interleave

9

sector size

8

sector sizes

10

seek error

13

seek positioning error

13

segment

10 ,

11

self-contained

11

Self-Monitoring Analysis and Reporting Technology.

See S.M.A.R.T.

SE-LVD alternative

61

sense key

13

sequential read operations

12

service life

13

, 15

philosophy

15

tools

15

servo data

5

shielding

3

shipping

19

shipping container

25

shock

26

and vibration

26

shock mount

39

signal ground

39

single unit shipping pack

8

single-ended (SE) drivers and receivers

7

single-ended interface circuit

24

site installation

15

software interleave

12

spare part

15

spindle

22

spindle startup

37

standard day

25

standards

3

start motor command

21

start unit command

37

start/stop time

10

status

32

stop spindle

10

stop time

10

storage capacity

31

straight-in connector

53

strict bit in Mode page 00h

11

supply voltage

21

support services

65

synchronous data transfer

49

synchronous data transfer operation

64

synchronous data transfer period

49

synchronous transfer period

64

system chassis

39

system recovery procedures

13

T

Taiwan certification

4

technical support services

65

temperature

10 ,

25 ,

38

ambient

25

gradient

25

non-operating

25

regulation

3

See also

cooling termination

22

terminator enable jumper TE

53

terminator power

62

terminator requirements

33

, 62

TP1 position

37

tracks/inch

9

tracks/surface, total

9

transfer period

49

transmitter receiver circuits

61

typical access time

10

U

Ultra160

47

Ultra160 mode

42

Ultra160 SCSI

5

Ultra160 SCSI controller

7

Ultra160 SCSI interface

5 ,

7

unformatted

8

unrecoverable condition

13

unrecoverable error

13

unrecoverable seek error

14

Unrecoverable write error

13

V vibration

26 ,

28

vital product data

45

volatile memory

46

voltage

10

, 21

W warranty

7

, 18

wet bulb temperature

25

wide Ultra160 SCSI interface

5

WP jumper

37

wrap-around

11

write caching

11

write error

13

unrecoverable 13

73

74 write operation

11

write protect

37

write retry count

31

Z zoned bit recording (ZBR)

7


Seagate Technology LLC

920 Disc Drive, Scotts Valley, California 95066-4544, USA

Publication Number: 100109939, Rev. C, Printed in USA

Seagate Barracuda 180 Family Product manual

Barracuda 180 Family:

ST1181677LW/LWV/LC/LCV

Product Manual, Volume 1

Barracuda 180 Family:

ST1181677LW/LWV/LC/LCV

Product Manual, Volume 1

Revision status summary sheet

Shipped with cover installed.

Do not install jumpers;

retain cover.

Internet

Presales Support

Warranty Service

Authorized Service Centers

Presales Support

Technical Support (SeaFONE)

Warranty Service

SeaBOARD

Fax Services—All European Countries

Warranty Service

Index

Seagate Technology LLC

920 Disc Drive, Scotts Valley, California 95066-4544, USA

Related manuals

Table of contents

Seagate Barracuda 180 Family Product manual

Barracuda 180 Family:

ST1181677LW/LWV/LC/LCV

Product Manual, Volume 1

Barracuda 180 Family:

ST1181677LW/LWV/LC/LCV

Product Manual, Volume 1

Revision status summary sheet

Shipped with cover installed.

Do not install jumpers;

retain cover.

Internet

Presales Support

Warranty Service

Authorized Service Centers

Presales Support

Technical Support (SeaFONE)

Warranty Service

SeaBOARD

Fax Services—All European Countries

Warranty Service

Index

Seagate Technology LLC

920 Disc Drive, Scotts Valley, California 95066-4544, USA

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Table of contents