LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Manuel d'utilisateur télécharger pdf (Page 91)

Installation Steps 6-19

automatically occupies TID 7 on 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. Table 6.7 shows the relative priority of each Target ID:

Important: Non-disk devices (CD-ROM or tape drive) 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 per controller for non-disk devices.

6.2.10.1 Example of MegaRAID SCSI 320-2 ID Mapping

Table 6.8 provides an example of ID mapping for the SCSI 320-2.

Table 6.7 Priority of Target IDs

Priority Highest Lowest

TID 7 6 5 ... 2 1 0 15 14 ... 9 8

Table 6.8 Example of Mapping for SCSI 320-2

ID Channel 0 Channel 1

0 A1-1 A1-2

1 A2-1 CD

2 CD A2-3

3 A2-5 A2-6

4 CD A3-1

5 A4-1 Tape

6 Optical A5-1

7 Reserved Reserved

8 A5-2 A5-3

9 A5-6 A5-7

10 A6-1 A6-2

11 A6-4 A6-5

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 157 158

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LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Manuel d'utilisateur Page 91