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Quick Reference
9-14 AlphaServer 1000 Rackmount Owner's Guide
SCSI ID Settings
For each configuration, the CDROM drive and tape drive IDs are manually set at
address 4 and 5, respectively. StorageWorks drive IDs are set automatically by
the backplane using a combination of three jumper settings on the backplane.
Single-Controller Configuration Jumper Options
Table 9–8 shows the SCSI ID settings for a system with a single-controller configuration.
Table 9–8: Single-Controller Configuration Jumper Options
Device or
Slot
None
J1
J2
J3
J1/J2
J1/J3
J2/J3
J1/J2/J3
Bus A
Tape
4
4*
4
4
4
4
4
4
CDROM
5
5*
5
5
5
5
5
5
Slot 0
0
0
0
8
0
8
8
8
Slot 1
1
1
1
9
1
9
9
9
Slot 2
2
2
2
10
2
10
10
10
Slot 3
3
3
3
11
3
11
11
11
__________________________ Note _____________________________
The system does not recognize two drives with the same ID number. Six drives
is the maximum number this configuration can recognize.
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