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CHB number
16-Gbps Fibre Channel ports (left to right)
Port 1
Port 2
CHB-1C
1C
3C
CHB-1D
1D
3D
CHB-1E
1E
3E
CHB-1F
1F
3F
CHB-1G
1G
3G
CHB-1H
1H
3H
CHB-2A
2A
4A
CHB-2B
2B
4B
CHB-2C
2C
4C
CHB-2D
2D
4D
CHB-2E
2E
4E
CHB-2F
2F
4F
CHB-2G
2G
4G
CHB-2H
2H
4H
Back-end modules
The back-end modules (BEMs), also called disk boards (DKBs), control the transfer of
data between the drives and cache memory. The back-end module LEDs indicate the
operating status of the module.
Back-end modules
Chapter 2: System controllers
Hitachi Virtual Storage Platform F350, F370 Hardware Reference Guide
24