6.2.4.6Connecting 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

Caution: Since all non-disk SCSI devices are single ended, it is not advisable to attach a non-disk device to a MegaRAID SCSI 320-1 RAID controller if LVD disk drives are also attached. This is because the SCSI bus will then operate in single- ended mode.

Figure 6.5 Connecting Non-Disk SCSI Devices

Host Computer

Internal SCSI Drives

 

ID0

Boot Drive

No Termination

ID1

No Termination

MegaRAID SCSI 320-1

ID2

SCSI ID 7

 

Termination

Enabled

Termination

ID5

No Termination

 

 

ID2

Enabled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

External SCSI

 

 

External SCSI

 

CD-ROM Drive

 

 

Tape Drive

 

Installation Steps

6-11

Copyright © 2002 by LSI Logic Corporation. All rights reserved.