Product data

Summary of SCSI Bus Configurations
Table 3 summarizes the various configurations that are valid for the 2104 Models DU3
and TU3.
Table 3. Summary of SCSI Bus Configurations
SCSI Bus
Mode
Number
of
Connected
Adapters
SCSI ID
of
Adapter
Maximum
Number of
Disk Drive
Modules
SCSI IDs of Disk Drive
Modules
SCSI ID of
Enclosure
Service
Processor
Adapters Supported
Single Bus 1 7 14 0,1,2,3,4,5,6
8,9,20,11,12,13,14
(See Note 3.)
15 All the adapters that
are listed in
“Adapters” on
page 142.
Single Bus 2 5,6 12 0,1,2,3,4
8,9,10,11,12,13,14
(See Note 3.)
15 For HACMP
configurations, see
Note 1.
For non-HACMP
configurations, see
Note 2.
Dual Bus:
v SCSI Bus 1
v SCSI Bus 2
1
1
7
7
7
7
0,1,2,3,4,5,6
8,9,10,11,12,13,14
(See Note 3.)
15
15
All the adapters that
are listed in
“Adapters” on
page 142.
Notes:
1. For HACMP configurations, PCI Dual-Channel Ultra2 Adapter (type 4-R) only. The
two adapters must be in two different using systems.
2. For non-HACMP configurations, PCI Dual-Channel Ultra2 Adapter (type 4-R) or
Ultra2 Integrated port. The two adapters or integrated ports can be in the same
using system, or in two different using systems. The adapters or integrated ports
must not share access to the disk drive modules.
3. On a 2104 Model DU3, the disk drive module SCSI IDs are 0 through 7, then 8
through 14, from left to right.
On a 2104 Model TU3, the disk drive module SCSI IDs are 0 through 7, then 8
through 14, from bottom to top.
SCSI ID 7 is for the adapter.
For more information about SCSI bus configurations and addresses, see “SCSI Bus
Configurations and Addresses” on page 26.
For examples of valid and non-valid configurations, see the remainder of this appendix.
Appendix B. Cable Configurations 143
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