IBM 7331, Installation Manual, Page: 36 / 62

Step 10. Dual Drive – Single Host SCSI Configuration
System Unit
Term inator
T
T
1
2
3
4
System
Adapter
SCSI Jumper
Tape Library
Backpanel
System-to-Device
SCSI Cable
A
B
C
RSCSI02-00
Figure 15. Dual Drive-Single Host SCSI Configuration
Refer to Figure 15 and perform the following steps:
Step 1. Remove 2 screws at the bottom of the back cover and lift the cover
off the library.
Step 2. Make sure the SCSI jumper cable is installed across connectors 2
and 3 on the library back panel.
Note: With the SCSI jumper cable installed, the library is configured
as a single SCSI bus. The library and both tape drives
respond on this bus.
Step 3. Make sure the terminator is installed on connector 4.
Step 4. Align the external SCSI cable with connector 1 on the library back
panel.
Step 5. Push in to seat the cable and tighten the thumbscrews (finger tight).
Step 6. Connect the other end of the SCSI cable to the system unit.
Step 7. Go to “Step 12. Connecting the Power Cables” on page 20.
The advantages of this configuration include:
Two jobs can be run simultaneously.
Library functions available for both drives (for Random Mode only).
The disadvantage of this configuration is the loss of drive performance.
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7331 and 3449 Installation Guide