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8 Plug-in Board Modules
8.1 The FFx-RAID Controller Module
The module will be inserted in an individual slot on the rear of the storage
subsystem. The two modules in figure 4 on page 20 are marked (1) for the FFx-
RAID controller module 1 and (5) for the FFx-RAID controller module 0.
V CAUTION!
In a simplex configuration the storage subsystem can be accessed only
via the FFx-RAID controller module 0 (see figure 4 on page 20).
In a dual-active configuration both FFx-RAID controller modules must have the
same size of cache memory and the same firmware version.
The module incorporates the FFx-RAID controller itself (1), the device adapter
(DA) (2) and the host adapter (HA) (3).
Figure 18: The FFx-RAID controller module
The FFx-RAID controller is a high-performance FC host to FC disk array
controller. The device adapter makes the connection between the FFx-RAID
controller and the FC hard disk drives, the host adapter the connection to the
server.
1 2 3 4
O N
1 2 3 4
O N
1
2
3
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