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18 About Your System
Back-Panel Indicators and Features
Figure 1-4 shows the back-panel features of the enclosure. A fully populated
enclosure with dual RAID controllers and two power supply/cooling fan
modules is shown. However, a single RAID controller module is supported,
and the enclosure can run temporarily on one power supply/cooling fan
module. For more information, see "Power Supply and Cooling Fan Features"
on page 24.
Figure 1-4. Back-Panel Features
RAID Controller Modules
The RAID controller modules provide high-performance, advanced virtual
disk configuration, and fault-tolerant disk subsystem management. Each
RAID controller module contains 512 MB of cache that is mirrored with the
other controller's cache for high availability and protected by a battery for up
to 72 hours.
1 RAID controller
module 0
2 RAID controller
module 1
3 power supply/cooling
fan modules (2)
1 2
3