LSI MegaRAID Enterprise 1600 - Manual (Page 83)

Chapter 6 Hardware Installation 69
Step 11 Set Target IDs
Set target identifiers (TIDs) on the SCSI devices. Each device in a specific SCSI channel must
have a unique TID in that channel. Non-disk devices (CD-ROM or tapes) should have unique
SCSI IDs regardless of the channel where they are connected. See the documentation for each
SCSI device to set the TIDs. The MegaRAID controller automatically occupies TID 7 in each
SCSI channel. Eight-bit SCSI devices can only use the TIDs from 0 to 6. 16-bit devices can use the
TIDs from 0 to 15. The arbitration priority for a SCSI device depends on its TID.
Priority Highest Lowest
TID 7 6 5 … 2 1 0 15 14 … 9 8
Important
Non-disk devices (CD-ROM or tapes) should have unique SCSI IDs
regardless of the channel they are connected to. ID 0 cannot be used
for non-disk devices because they are limited to IDs 1 through 6.
There is a limit of six IDs for non-disk devices per controller.
Cont’d