Compaq AA-RHGWC-TE manual Setting the TL890/TL891/TL892 Scsi ID

inventory of modules may be incorrect and the contents of some or all of the modules will be inaccessible to the system and to the host.

When the expansion unit comes up, it will communicate with each base module through the expansion unit interface and inventory the number of base modules, tape drives, and cartridges present in each base module. After the MiniLibrary configuration has been determined, the expansion unit will communicate with each base module and indicate to the base module which cartridge group that base module contains. The cartridges slots are numbered by the expansion unit as follows:

•Expansion unit: 0 through 15

•Top TL891/TL892: 16 through 25

•Middle TL891/TL892: 26 through 35

•Bottom TL891/TL892: 36 through 45

When all initialization communication between the expansion module and each base module has completed, the base modules will display their cartridge numbers according to the remapped cartridge inventory.

For instance, the middle base module default screen would be displayed as follows:

DLT2 Idle

DLT3 Idle Loader Idle

26> _ _ _ _ _ _ _ _ _ _ <35

8.8.2.4 Setting the TL890/TL891/TL892 SCSI ID

After the base modules have been reconfigured as slaves, each base module control panel still provides tape drive status and error information, but all control functions are carried out from the expansion unit control panel. This includes setting the SCSI ID for each of the tape drives present.

To set the SCSI IDs for the tape drives in a MiniLibrary configured with TL890/TL891/TL892 hardware, follow these steps:

1.Apply power to the MiniLibrary, ensuring that you power up the expansion unit after or at the same time as the base modules.

2.Wait until power-on self-tests (POST) have terminated and the expansion unit and each base module display the default screen.

3.At the expansion unit control panel, press the Enter button to display the Main Menu.

Configuring a Shared SCSI Bus for Tape Drive Use 8–35