Compaq AA-RHGWB-TE manual Cabling the Rackmount TL881 or TL891 DLT MiniLibrary

Table 8–12: Hardware Components Used to Create the Configuration Shown in Figure 8–17 (cont.)

Callout Number	Description
6	H879-AA terminator
7	328215-00X, BN21K, or BN21L cablec

aThe maximum length of the BN38C (or BN38D) cable on one SCSI bus segment must not exceed 25 meters.

bThe maximum length of the BN37A cable must not exceed 25 meters.

cThe maximum combined length of these cables must not exceed 25 meters.

8.11.2.2Preparing a TL881 or TL891 Rackmount MiniLibrary for Shared SCSI Bus Usage

A TL881 or TL891 MiniLibrary base unit may also be used in a rackmount configuration with an expansion unit, data unit(s), and other base units, to add tape drive and/or cartridge capacity to the configuration.

The expansion unit is installed above the TL881 or TL891 DLT MiniLibrary base or data units in a SW500, SW800, or RETMA cabinet.

For complete hardware installation instructions, see the TL881 MiniLibrary System User’s Guide or TL891 MiniLibrary System User’s Guide.

The topics in this section provide information on preparing the rackmount TL881 or TL891 DLT MiniLibrary for use on a shared SCSI bus.

It is assumed that the expansion unit, base modules, and pass-through and motor mechanism have been installed.

8.11.2.2.1 Cabling the Rackmount TL881 or TL891 DLT MiniLibrary

You must make the following connections to render the DLT MiniLibrary system operational:

•Expansion unit to the pass-through motor mechanism: The motor mechanism cable is about 1 meter long and has a DB-15 connector on each end. Connect it between the connector labeled Motor on the expansion unit to the motor on the pass-through mechanism.

_____________________ Note _____________________

This cable is not shown in Figure 8–18 as 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

8–58Configuring a Shared SCSI Bus for Tape Drive Use