■
CPU
Each controller has one CPU.
■
Cache Memory
Cache memory enables high speed processing by storing frequently used data.
The cache memory capacity for each controller is 2GB.
If an ETERNUS DX is equipped with two controllers, when the cache memory fails, the failed cache memory
can be replaced while the system is running.
■
BUD
A BUD is non-volatile memory in which the firmware of an ETERNUS DX is registered. A BUD is used as an
area to back up data in the cache memory if a power failure occurs.
Each controller has one BUD.
If an ETERNUS DX is equipped with two controllers, when the BUD fails, the failed BUD can be replaced while
the system is running.
■
Host Interface
A host interface (CA) is an interface that connects a controller to a server.
The available types are FC, iSCSI, and SAS.
The host interface specifications are shown below.
Table 4.1 Host Interface Specifications
Interface Transfer rate (max.) Connector type
Number of ports for each
controller
FC 8Gbit/s LC 2
iSCSI 1Gbit/s RJ-45 2
SAS 6Gbit/s miniSAS (SFF-8088) 2
Chapter 4 Hardware Configurations
4.1 Controller Enclosure
53
FUJITSU Storage ETERNUS DX60 S3 Disk storage system
Overview
Copyright 2014 FUJITSU LIMITED
P3AM-8972-01ENZ0
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