Fujitsu Eternus DX90 S2 - Controllers; Figure 1.10 Side View of a 3.5 Type Controller Enclosure; Figure 1.9 Top View of a 3.5 Type Controller Enclosure

Chapter 1 Hardware Configurations
1.1 Controller Enclosure
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Site Planning-
Copyright 2013 FUJITSU LIMITED P3AM-4822-12ENZ0
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● Top view
Figure 1.9 Top view of a 3.5" type controller enclosure
● Side view
Figure 1.10 Side view of a 3.5" type controller enclosure
1.1.1 Controllers
The controller contains a CPU, cache memory, System Capacitor Unit (SCU), non-volatile memory, host
interfaces, drive interface ports, and LAN ports. The controller controls all operations in the ETERNUS DX Disk
storage system.
■ CPU
A single core processor is installed.
■ Cache memory
Cache memory enables high speed processing by storing frequently used data.
The cache memory capacity for each controller is 2GB for the ETERNUS DX80 S2 and 4GB for the ETERNUS DX90
S2.