Quantum | DLT 2500 | DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X

DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X
DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X
Application Note
DLTtape™ TAPE UNIT INSTALLATION
IBM RISC SYSTEM/6000
AIX 3.2, 4.X
®
®
This application note is to be used only as a guideline for the titled subject. The user assumes all
responsibility for understanding the interrelationships of this information with other affected software
or system products. Quantum Corporation provides this information as a service only, and assumes no
responsibility for any damages, which could result from the use of this information.
The information in this application note is subject to change without notice and is not to be construed
as a commitment by Quantum Corporation. Quantum Corporation assumes no responsibility for any
errors that may appear in this document.
NOTE: The information in this document pertains to DLT™2000,DLT™2000XT, DLT™4000, DLT™7000 or
DLT™8000 cartridge tape drive or the DLT™2500, DLT™2500XT, DLT™2700, DLT™2700XT, DLT™4500 or
DLT™4700 tape mini-library that you are installing.
The following section describes the installation and configuration of a DLTtape tape peripheral on an IBM RISC
System/6000 running AIX 3.2 or 4X.. Additionally, information about setting the DLTtape device attributes as well as
listing the special device files that can be used to select tape drive options (re-tensioning, rewinding, and density
settings) are also included. The DLTtape controller firmware must have OEM-1 controller firmware installed.
Controller firmware version must be V10 or greater. Note that DLT7000 or DLT8000 will not work on AIX 3.2.
For the DLT7000 and DLT8000 attachment to AIX 3.2.5 will require a patch from IBM to be installed. The patch ID is
PTF U429285 and can be obtained using a web browser at http://service.software.ibm.com. The patch allows
attachment of wide SCSI devices such as the DLT7000 and the DLT8000 to narrow host adapters on RS6000.
The section following the installation includes information about DLTtape tape cartridge compatibility. The last section
describes important information regarding the use of an installed DLTtape mini-library.
Installation
IBM RISC System/6000 must have the appropriate SCSI interface for DLTtape drive to attached to, i.e., a SCSI
single-ended DLTtape drive can be attached only to a SCSI single-ended interface. The same is true for SCSI
differential attachment. After the DLTtape tape peripheral has been attached, you will need to perform certain system
operations that allow the DLTtape tape peripheral to be recognized.
Perform the installation as follows:
1. Shutdown the system and remove ac power from the system. Install the DLTtape tape peripheral and connect it to
its SCSI controller. Depending on the DLTtape tape peripheral you are installing, refer to one of the following
manuals for switch and jumper settings and SCSI bus termination:
●
●
●
●
●
DLT2000/DLT2700 product manual (order number 81-109132)
DLT2500 owner's manual (order number 81-109374)
DLT2000XT/DLT2500XT/DLT2700XT product manual (order number 81-109253)
DLT4000/DLT4500/DLT4700 product manual (order number 81-106336)
DLT7000 Tape Drive product manual (order number 81-60000)
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DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X
●
2.
3.
4.
5.
6.
DLT8000 Tape Drive product manual (order number 81-60118)
Set the DLT SCSI device address to an unassigned ID.
Reboot the system. During the boot sequence, the system adds the DLTtape tape peripheral to its customized
configuration table as a defined tape drive. The following steps will be used to verify that the system has added
the DLTtape tape peripheral.
At the command line, enter smit.
Select Devices.
Select Tape Drives.
Select List All Supported Tape Drives.
The system displays a table similar to the following:
type
1200mb-c
150mb
525mb
8mm
8mm5tgb
9trk
ost
7. Select List All Defined
subclass
SCSI
SCSI
SCSI
SCSI
SCSI
SCSI
SCSI
Tape Drives
description
1200 MB 1/4-inch Tape Drive
150 MB 1/4-inch Tape Drive
525 MB 1/4-inch Tape Drive
2.3 GB 8mm Tape Drive
5.0 GB 8mm Tape Drive
1/2-inch 9-trk Tape Drive
Other SCSI Tape Drive
The system will display the tape drives connected to SCSI I/O controller(s) as in the example shown below.
(Note below that the system may return a status of either Defined or Available.):
name
rmt1
status
Defined
location
00-00-0S-50
description
Other SCSI Tape Drive.
Where:
- the logical name of the DLTtape tape peripheral(rmt1)
- whether the peripheral is defined (known, but not ready for use) or available (ready for use)
- the SCSI ID of the DLTtape tape peripheral (5 in the sample) and the address of the SCSI
I/O controller (the 0 that follows the 5 in the sample above)
description - a short description of the tape drive type. In the sample above, the DLTtape tape peripheral
is described as other SCSI tape drive
name
status
location
8. If the status is reported as Available for the device at the SCSI ID address of interest, then the installation is
complete, otherwise, go to Step 9.
The DLTtape tape peripheral must have available status in order for it to be ready for use. Should the status
indicate Defined in Step 7, then the following steps will enable the status to be changed to Available.
9. Under the Devices, Tape Drive selection in smit, select Configure a defined tape drive. The system displays a list
of defined tape drives.
10. Select the DLTtape device by its logical address and location then select Ok. The system responds by reporting
the status of the command.
11. To verify that the system has changed the device status from defined to available, select List All Supported tape
Drives. The system display should be similar to the following:
rmt1 Available
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DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X
The installation is now complete.
Optional Attribute Settings
The following information provides optional DLTtape attribute settings. Use the following steps to access and/or
modify those attributes of interest.
1. Under the Devices, Tape Drive selection in smit, select Select
Change/Showcharacteristics of a tape drive. The system displays a table of the defined tape
drives.
2. Select the DLTtape device by its logical address and location. The system will display the attributes assigned to
the DLTtape tape drive. The DLTtape attributes may be changed from the table below. Recommended settings
are in bold.
●
●
●
●
BLOCK size (0 = variable length): 0
BLOCK SIZE for variable length support: 0
Use DEVICE BUFFERS during writes: yes
The following shows density settings for attached DLTtape drives along with a description of the density
values.
All DLT2000
series units
DENSITY setting # 1: 128 80h is the vendor-unique density code for 10 GB, 62500 bpi,
uncompressed mode
DENSITY setting # 2: 129 81h is the vendor-unique density code for 20 GB, 62500 bpi,
compressed mode
All DLT4000
series units
DENSITY setting # 1: 130 82h is the vendor-unique density code for 20 GB, 81633 bpi,
uncompressed mode
DENSITY setting # 2: 131 83h is the vendor-unique density code for 40 GB, 81633 bpi,
compressed mode
DLT7000
DENSITY setting # 1: 132 84h is the vendor-unique density code for 35 GB, 85937 bpi,
uncompressed mode
DENSITY setting # 2: 133 85h is the vendor-unique density code for 70 GB, 85937 bpi,
compressed mode
DLT8000
DENSITY setting # 1: 136 88h is the vendor-unique density code for 40 GB, 98250 bpi,
uncompressed mode
DENSITY setting # 2: 137 89h is the vendor-unique density code for 80 GB, 98250 bpi,
compressed mode
NOTE: The recommended DLTtape device density settings may cause problems with tape drive
access when using third party applications. In these cases it is suggested that the density values be
set to zero (0).
Special Device Files Available
Special device files, shown below, are located in the /dev directory can be used to control specific options associated
with an operation to tape. These options include whether or not to retension the tape prior to starting an operation,
whether or not to rewind the tape after completing an operation, and selecting the appropriate density setting for the
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DLTtape(tm) Tape Unit Installation: IBM RS6000/AIX 3.2, 4.X
operation. It should be noted that retensioning is not necessary for cartridges loaded in DLTtape tape drives.
Special File
Rewind Retension Density
On Close On Open Setting
/dev/rmt1
Yes
No
#1
/dev/rmt1.1
No
No
#1
/dev/rmt1.2
Yes
Yes
#1
/dev/rmt1.3
No
Yes
#1
/dev/rmt1.4
Yes
No
#2
/dev/rmt1.5
No
No
#2
/dev/rmt1.6
Yes
Yes
#2
/dev/rmt1.7
No
No
#2
DLTtape Tape Cartridge Compatibility
The following is a matrix of DLTtape tape cartridge/drive type compatibility. Use this matrix when considering tape
cartridge and drive type combinations. Where compatibility is indicated, the capacities are shown as native/compressed
values.
Drive
Cartridge
DLTtape™ III
(CompacTape III™)
DLT2000
DLT2500
DLT2700
DLT2000XT
DLT2500XT
DLT2700XT
DLT7000
DLT8000
Up to 10/20GB Up to 10/20GB Up to 10/20GB Up to 10/20GB 10/20GB only
DLTtape™ IIIXT
Not Compatible 15/30GB only
(CompacTape IIIXT)
DLTtape™ IV
(CompacTape IV™)
DLT4000
DLT4500
DLT4700
15/30GB only
Not Compatible Not Compatible 20/40GB only
15/30GB only
15/30GB only
20/40GB
35/70GB
20/40GB
35/70GB
40/80GB
DLTtape Mini-Library Usage
The IBM AIX operating system does not support DLTtape media changer device commands. Therefore, an installed
DLT2500/DLT2500XT/DLT2700/DLT2700XT/DLT4500/DLT4700 mini-library can not be utilized in random access
mode and can only be accessed in sequential mode. Refer to either the DLT2000/DLT2700 product manual, DLT2500
owner's manual, DLT2000XT/DLT2500XT/DLT2700XT or the DLT4000/DLT4500/DLT4700 product manual for
detailed description of these access modes.
Copyright © 2000 Quantum Corporation
DLT™ DLTtape™ DLTstor™ are trademarks of Quantum Corporation
Application Note No:QT00001_G01
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