8 Plug-in Board Modules
8.1The 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.
VCAUTION!
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.
