Hitachi VSP E990 - Install Hitachi VSP E990: Cable Management Console; Install Hitachi VSP E990: Power On System

Chapter 2: Hardware overview
The storage system consists of a controller chassis and one or more drive chassis mounted
in a 19-inch rack.
Controller chassis
The controller chassis contains the following components:
■
Controller boards (CTLs)
■
Front-end modules (FEMs), also called channel boards (CHBs)
■
Back-end modules (BEMs), also called disk boards (DKBs)
■
Power supply (PS)
■
Backup fan module (BKMF)
The storage system's CTLs contain the cache memory (CM) and cache flash memory (CFM)
for the storage system. The VSP E990 supports 1,024 GiB of cache memory.
Number Item Description
1 LED (POWER, READY, WARNING,
ALARM)
Status LEDs for the controller
chassis.
2 POWER ON/OFF (main switch) Switch that controls power to the
storage system.
3 Lock Use to lock and unlock front bezel.
Chapter 2: Hardware overview
Hitachi Virtual Storage Platform E990 Hardware Reference Guide 11