servers. A drive chassis consists of disks or SSD drives, power supplies, and the interface circuitry
connecting it to the controller chassis. The remaining racks (Rack-01, Rack-02, Rack-10 and
Rack-11) contain from one to three drive chassis.
The following sections provide descriptions and illustrations of the P9500 disk array and its
components.
Figure 1 P9500 disk array
NOTE: Each Rack is 600mm wide without side covers. Add 5mm to each end of entire assembly
for each side cover.
Controller chassis
The controller chassis (factory designation DKC) includes the logical components, memory, disk
drive interfaces, and host interfaces. It can be expanded with a high degree of granularity to a
system offering up to twice the number of processors, cache capacity, host interfaces and disk
storage capacity.
6 Introduction
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