CA:
Channel Adapter
Host Interface
Memory:
Cache Memory
PFM:
PCIe Flash Module
SSD cache built in a controller to increase the read cache capacity
BBU:
Battery Backup Unit
Backup power source in case of power outage
BUD:
Bootup and Utility Device
•
Backup area in case of power outage
•
Storage area for firmware
SW:
Switch
PCI Express switch
IOC:
I/O Controller
Controller to control I/O
EXP:
SAS Expander
Expander chip for SAS connections
CPSU:
Controller Enclosure Power Supply Unit
Power supply unit for controller enclosures
DE:
Drive Enclosure
IOM:
I/O Module
Unit that controls I/O between controllers and drives
HD-DE:
High-density Drive Enclosure
FEM:
Fan Expander Module
Cooling fan module that is installed in a high-density drive enclosure
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)
DPSU:
Drive Enclosure Power Supply Unit
Power supply unit for drive enclosures
5. Hardware Configurations
Configuration Schematics
169
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AM-7722-25ENZ0
Summary of Contents for ETERNUS DX500 S3/DX600 S3
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