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8.7 Preparing the TL891 and TL892 DLT MiniLibraries for
Shared SCSI Usage
______________________ Note _______________________
To achieve system performance capabilities, we recommend
placing no more than two TZ89 drives on a SCSI bus, and also
recommend that no shared storage be placed on the same SCSI
bus with a tape library.
The TL891 and TL892 MiniLibraries use one (TL891) or two (TL892)
TZ89N-AV differential tape drives and a robotics controller, which access
cartridges in a 10-cartridge magazine.
Each tape drive present, and the robotics controller, have individual SCSI
IDs.
There are six 68-pin, high-density SCSI connectors located on the back of
the MiniLibrary; two SCSI connectors for each drive and two for the robotics
controller. The TL891 uses a 0.3-meter SCSI bus jumper cable (part of the
TL891 package) to place the robotics controller and tape drive on the same
SCSI bus. When upgrading to the TL892, you can place the second drive on
the same SCSI bus (another 0.3-meter SCSI bus jumper cable is supplied
with the DS-TL892-UA upgrade kit) or place it on its own SCSI bus.
The following sections describe how to prepare the TL891 and TL892 in
more detail.
8.7.1 Setting the TL891 or TL892 SCSI ID
The control panel on the front of the TL891 and TL892 MiniLibraries is used
to display power-on self-test (POST) status, display messages, and to set
up MiniLibrary functions.
When power is first applied to a MiniLibrary, a series of POST diagnostics
are performed. During POST execution, the MiniLibrary model number,
current date and time, firmware revision, and the status of each test is
displayed on the control panel.
After the POST diagnostics have completed, the default screen is shown:
DLT0 Idle
DLT1 Idle
Loader Idle
0>__________<9
Configuring a Shared SCSI Bus for Tape Drive Use 8–23