3.
Hardware Configurations
Configuration Schematics
BUD:
Bootup and Utility Device
Backup area in case of power outage
•
Storage area for firmware
•
SCU:
System Capacitor Unit
Backup power source in case of power outage
IOC:
I/O Controller
Controller to control I/O
EXP:
SAS Expander
Expander chip for SAS connections
DE:
Drive Enclosure
IOM:
I/O Module
Unit that controls I/O between controllers and drives
MP:
Mid Plane
Board that is located between the front of the enclosure and the rear of the enclosure (the controller
(CM) or I/O module (IOM) side)
PSU:
Power Supply Unit
FUJITSU Storage ETERNUS DX60 S4, ETERNUS DX60 S3 Hybrid Storage Systems Design Guide (Basic)
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