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