Technical data

_____________________ Note _____________________
This cable is not shown in Figure 8–19 because the
pass-through mechanism is not shown in the figure.
• Robotics control cables from the expansion unit to each base unit or
data unit: These cables have a DB-9 male connector on one end and
a DB-9 female connector on the other end. Connect the male end to
the Expansion Unit Interface connector on the base unit or Diagnostic
connector on the data unit and the female end to any Expansion Modules
connector on the expansion unit.
_____________________ Note _____________________
It does not matter which interface connector you connect to
a base unit or a data unit.
• SCSI bus connection to the expansion unit robotics: Connect the shared
SCSI bus that will control the robotics to one of the SCSI connectors
on the expansion unit with a 328215-00X, BN21K, or BN21L cable.
Terminate the SCSI bus with an HD68 terminator (such as an H879-AA)
on the other expansion unit SCSI connector.
• SCSI bus connection to each of the base module tape drives: Connect a
shared SCSI bus to one of the DLT1 or DLT2 SCSI connectors on each of
the base modules with 328215-00X, BN21K, or BN21L cables. Terminate
the other DLT1 or DLT2 SCSI bus connection with an HD68 terminator
(H879-AA).
You can daisy chain between DLT1 and DLT2 (if present) with a
30-centimeter (11.8-inch) SCSI bus jumper (supplied with the TL881 or
TL891). Terminate the SCSI bus at the tape drive on the end of the
shared SCSI bus with an HD68 terminator (H879-AA).
____________________ Notes ____________________
Do not connect a SCSI bus to the SCSI connectors for the
library connectors on the base modules.
We recommend that no more than two tape drives be on
a SCSI bus.
Figure 8–19 shows a TL891 DLT MiniLibrary configuration with an
expansion unit, a base unit, and a data unit. The library robotics expansion
unit is on one shared SCSI bus and the two tape drives in the base unit are
on separate, shared SCSI buses. The data unit is not on a shared SCSI bus
because it does not contain any tape drives but tape cartridges only. The
8–68 Configuring a Shared SCSI Bus for Tape Drive Use