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Quantum Corporation DLTtape Application Note

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DLTtape Tape Unit Installation IRIX 5.3 and 6.X SGI sytems

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 the

Silicon Graphics system running IRIX release 5.3 or 6.X. The DLTtape controller firmware must be

OEM-1.

The section following the installation includes information about DLT tape cartridge compatibility and

information about IRIX behavior when there are periods of non-use of the DLTtape drive. The last section

describes important information regarding the use of an installed DLTtape mini-library.

Installation

SGI system must have the appropriate SCSI interface for DLTtape drive to attach 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. The hardware attachment requires the DLTtape tape peripheral to be attached to

the SCSI interface while the system is powered down. After the DLTtape tape peripheral has been

attached, you will need to make file modifications and perform certain system operations that allow the

DLTtape tape peripheral to be recognized.

Perform the installation as follows:

1. Shut down the SGI 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)

• DLT8000 Tape Drive product manual (order number 81-60118)

Set the DLTtape SCSI device address to an unassigned ID.

2. Turn power on and boot the system. Log on as root and execute the following UNIX command to verify

the DLTtape attachment:

hinv -c tape

Summary of content (4 pages)

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Quantum Corporation DLTtape Application Note _____________________________________________________________________________________________ DLTtape Tape Unit Installation IRIX 5.3 and 6.X SGI sytems 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.
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Quantum Corporation DLTtape Application Note _____________________________________________________________________________________________ For a DLTtape device whose SCSI ID is set to 4 and is attached to the system's first host adapter but not system configured, the system response should be similar to the following: Tape drive: unit 4 on SCSI controller 0: unknown 3. If you're operating system is IRIX 5.3, open the /usr/var/sysgen/master.d/scsi file for editing; for IRIX 6.X, open /var/sysgen/master.
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Quantum Corporation DLTtape Application Note _____________________________________________________________________________________________ 6. After reboot is complete and you have logged in as root, change directory to /dev. Enter the following command to establish the DLTtape device files: /MAKEDEV 7.
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Quantum Corporation DLTtape Application Note _____________________________________________________________________________________________ DLTtape Tape Drive Use and IRIX Behavior During periods of non-use of the DLTtape tape drive there is a danger of unintended overwriting of previously written data. Also, rewinding of DLTtape tape may occur before the next record is read when the intent is to read the next record at the current tape position.