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.
Number
Item
Description
1
STATUS LED
Green: Back-end module is in the power-
on state.
Red: Back-end module can be removed
safely.
2
PORT LED
Blue: Link status is normal.
3
PATH 0 connector
Connect to a drive tray.
4
PATH 1 connector
Connects to a drive tray.
Back-end modules
Chapter 2: System controller
Hitachi Virtual Storage Platform G900 Hardware Reference Guide
27