Compaq AA-RHGWC-TE manual 15 TL893 Three-Bus Configuration

Figure 8–15: TL893 Three-Bus Configuration

MUC

SCSI Address 2

0415498 (50-Pin Micro-D Terminator)

0425031 (SCSI Diff Feed Through)

0425017 (Cable)

	-01
TZ89 Tape Drive		6204099
SCSI Address 5
(top shelf)
	-01
TZ89 Tape Drive		6204099
SCSI Address 4
(middle shelf)	-01
TZ89 Tape Drive	6204099
SCSI Address 3
(bottom shelf)
Drive Housing

0415619

(68-pin Micro-D Terminator)

0415619

(68-pin Micro-D Terminator)

SCSI Port A SCSI Port B SCSI Port C

(Rear Connector Panel)

ZK-1326U-AI

•The SCSI input for the TL896 is also high-density, 68-pin differential. The default internal cabling configuration for the TL896 is a six-bus configuration shown in Figure 8–16 as follows:

–The upper bay top shelf tape drive (tape drive 5, SCSI ID 5) and MUC (SCSI ID 2) are on SCSI Port D. To allow the use of the same MUC and terminator used with the TL822 and TL826, a 68-pin to

50-pin adapter is used on the MUC to connect the SCSI cable from the tape drive to the MUC. In Figure 8–16 it is shown as part number 0425031, SCSI Diff Feed Through. This SCSI bus is terminated on the MUC with terminator part number 0415498, a 50-pin Micro-D terminator.

–The upper bay middle shelf tape drive (tape drive 4, SCSI ID 4) is on SCSI Port E and is terminated on the tape drive.

–The upper bay bottom shelf tape drive (tape drive 3, SCSI ID 3) is on SCSI Port F and is terminated on the tape drive.

–The lower bay top shelf tape drive (tape drive 2, SCSI ID 5) is on SCSI Port A and is terminated on the tape drive.

–The lower bay middle shelf tape drive (tape drive 1, SCSI ID 4) is on SCSI Port B and is terminated on the tape drive.

Configuring a Shared SCSI Bus for Tape Drive Use 8–53