Toshiba Magnia 560S - Manual (Page 90)

Installation Steps 72
Hardware Installation
Step 8 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 RAID Controller Kit-G
controller automatically occupies TID 7 in the 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.
Table 6.9 lists the installation steps. Each step is described in detail in the following
pages.
Table 6.9 Target IDs
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.
Example of RAID Controller Kit-G ID Mapping
Table 6.10 provides an example of ID mapping for the RAID Controller Kit-G.
Table 6.10 Example of Mapping for RAID Controller Kit-G
ID Channel 1
0 A1-1
1 A2-1
2 CD
3 A2-5
4 CD
5 A4-1
6 Optical
7 Reserved
8 A5-2
9 A5-6
10 A6-1
11 A6-4
12 A6-7
13 A7-2