Compaq AA-RHGWB-TE manual Cabling the TZ887 Tape Drive, TZ887 DLT MiniLibrary Rear Panel

Figure 8–7: TZ887 DLT MiniLibrary Rear Panel

SCSI ID

Selector

Switch

+

0

-

TZ887

SCSI ID

+

0

-

ZK-1461U-AI

8.5.2 Cabling the TZ887 Tape Drive

The TZ887 is connected to a single-ended segment of the shared SCSI bus. It is connected to a differential portion of the shared SCSI bus with a DWZZB-AA. Figure 8–8 shows a configuration with a TZ887 for use on a shared SCSI bus. The TZ887 in this figure would have the SCSI ID set to

0.The member systems use SCSI IDs 6 and 7, and the disks are located in the BA356 slots at SCSI IDs 1-5.

To configure the shared SCSI bus for use with a TZ887, follow these steps:

1.You will need one DWZZB-AA for each shared SCSI bus with a TZ887 tape drive.

Ensure that the DWZZB-AA jumpers W1 and W2 are installed to enable the single-ended termination.

Remove the termination from the differential end by removing the five 14-pin SIP resistors.

2.Attach an H885-AA trilink connector to the differential end of the DWZZB-AA.

3.Connect the single-ended end of the DWZZB-AA to the TZ887 with a BN21M cable.

4.Install an H8574-A or H8890-AA terminator on the other TZ887 SCSI connector.

5.Connect the trilink on the DWZZB-AA to another trilink or Y cable on the differential shared SCSI bus with BN21K or BN21L cables. Ensure that the trilink or Y cable at both ends of the shared SCSI bus is terminated with an H879-AA terminator.

8–16Configuring a Shared SCSI Bus for Tape Drive Use