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electronic SCSI ID using the Configure menu from the control panel (see
Section 8.10.2).
The actual upgrade is beyond the scope of this manual. See the TL895 Drive
Upgrade Instructions manual for upgrade instructions.
8.10.5 Connecting the TL895 Tape Library to the Shared SCSI Bus
The TL895 tape library has up to 3 meters of internal SCSI cabling per SCSI
bus. Because of the internal SCSI cable lengths, it is not possible to use a
trilink connector or Y cable to terminate the SCSI bus external to the library
as is done with other devices on the shared SCSI bus. Each SCSI bus must
be terminated internal to the tape library at the tape drive itself with the
installed SCSI terminators. Therefore, TruCluster Server clusters using the
TL895 tape libraries must ensure that the tape libraries are on the end of
the shared SCSI bus.
In a TruCluster Server cluster with a TL895 tape library, the member
systems and StorageWorks enclosures or RAID subsystems may be isolated
from the shared SCSI bus because they use trilink connectors or Y cables.
However, because the TL895 cannot be removed from the shared SCSI bus,
all ASE services that use any shared SCSI bus attached to the TL895 must
be stopped before the tape loader can be removed from the shared bus.
To add a TL895 tape library to a shared SCSI bus, select the member system
or storage device that will be the next to last device on the shared SCSI bus.
Connect a BN21K or BN21L cable between a trilink or Y cable on that device
to the appropriate tape library port.
8.11 Preparing the TL893 and TL896 Automated Tape
Libraries for Shared SCSI Bus Usage
The topics in this section provide information on preparing the TL893 and
TL896 Automated Tape Libraries (ATLs) for use on a shared SCSI in a
TruCluster Server cluster.
______________________ Note _______________________
To achieve system performance capabilities, We recommend
placing no more than two TZ89 drives on a SCSI bus.
The TL893 and TL896 Automated Tape Libraries (ATLs) are designed to
provide high-capacity storage and robotic access for the Digital Linear Tape
(DLT) series of tape drives. They are identical except in the number of tape
drives and the maximum capacity for tape cartridges.
8–48 Configuring a Shared SCSI Bus for Tape Drive Use