Standby Power
The Data Center's standby electrical system consists of backup power sources to keep servers and networking devices running when commercial power fails. As with all types of Data Center infrastructure, you must strike a balance among three factors when designing your standby system:
Redundancy
Simplicity
Cost
The more levels of redundancy you employ (N+1, N+2, and so on), the more complex and expensive the system inevitably becomes.
Load Requirements
How to calculate the basic power requirements for a Data Center was covered earlier this chapter. When designing your standby power system, start with whatever maximum kva load the entire room can produce and then adjust it in two ways:
Size your standby infrastructure to handle 110 to ...
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