HP 3000 Enterprise Virtual Array - Manual (Page 111)

Storage System Hardware Components
111 Enterprise Virtual Array 3000 User Guide
HSV100 Controllers
This section describes the major features and function of the HSV100 controllers.
See
Figure 49 . Each Enterprise Storage System includes a pair of HSV100
controllers.
Figure 49: HSV100 controller
High Availability Features
Two interconnected HSV100 controllers ensure that the failure of a controller
element (such as transceiver, cable, Fibre Channel port, and so forth) does not
disable the system. The complete data redundancy includes two Loop A data
paths.
A single controller can fully support an entire system until the defective controller,
or controller element, is repaired.
If a blower or power supply fails, it can be replaced without shutting down the
system.
Each controller has two lead-acid cache battery assemblies that provide power to
the cache memory dual in-line memory modules (DIMMs). Each battery
assembly has three lead-acid, nonspillable cells. When both battery assemblies are
fully charged, they can provide power to the DIMMs for up to 96 hours.
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