Primary Cage Dual Bus - Scsi A And B - HP D7171A - NetServer - LPr Installation Manual

Chapter 4

Primary Cage Dual Bus - SCSI A and B

This is a block diagram of the LH 3000r cage duplexed.
PCI Slots
Channel B:
Used for Bottom Half
of Cage
These are the drive configurations and SCSI IDs for the primary cage duplexed.
Slot Number
1 2 3 4 5
Disk Drive
1 3 5
2 4
SCSI Device ID
1 2
0 0 1
SCSI Bus ID
B B B A A
Bus B Bus A
Center Line
Figure 4-7. Rack-mount Duplex Mass Storage Configurations
NOTE
HP recommends the duplexed cage run off SCSI A and SCSI B
so that both the top and bottom halves run at the same speed.
I/O Board
Channel A:
Used for Top Half
SCSI A
of Cage
SCSI B
Backplane of
Primary Hot-Swap
Mass Storage Cage
Center Line
Figure 4-6. Primary Cage Duplexed
1 2 3 4 5 6
6
1 2 3
4
6
0 2 0 2
2
B B A A
A
Bus B Bus A
Center Line
Installing Mass Storage Devices
1 2 4
3 5 6
1 5
2 3 4
0 2 0 1 2
B B A A A
Bus B Bus A
Center Line
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