6.2.5.5Connecting Non-Disk SCSI Devices

SCSI tape drives and SCSI CD-ROM drives must each have a unique SCSI ID regardless of the SCSI channel they are attached to. The general rule for Unix systems is:

•Tape drive set to SCSI ID 2

•CD-ROM drive set to SCSI ID 5

Make sure that no hard drives are attached to the same SCSI Channel as the non-disk SCSI devices. Drive performance will be significantly degraded if SCSI hard disk drives are attached to this channel.

Figure 6.6 Connecting Non-Disk SCSI Devices

Host Computer

Internal SCSI Drives

 

ID0

Boot Drive

No Termination

ID1

No Termination

ID2

Termination

Enabled

 

Termination

No Termination

Enabled

ID2

ID5

External SCSI

External SCSI

CD-ROM Drive

Tape Drive

6-12

Hardware Installation

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