Electrical Requirements; Line Voltage; Branch Circuit Breakers; Frequency - HP StorageWorks XP48 - Disk Array Manual

Electrical Requirements

Line Voltage

Branch Circuit Breakers

Frequency

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Power requirements are one of the most important considerations prior to
installing your disk array. Each disk array has two separate connections to
AC power, so the rated AC current should be doubled. In case one input
fails, the second input MUST BE CAPABLE OF SUPPORTING THE
ENTIRE CURRENT DEMAND FOR BOTH SETS OF POWER
SUPPLIES.
The line voltage (AC) at the wall power outlet is a function of the local
power utility and your building power distribution network. Voltages
outside the operating range of the disk array can cause intermittent system
errors or a complete system shutdown. If required, the HP CE along with
your electrician can determine the current line voltage and make
recommendations. Avoid the use of a line voltage conditioner.
Make sure that distribution unit supports the correct voltage to support your
entire system.
The power cord supplied with the disk array is sized for connection to a
20-amp circuit.
AC line frequency is normally determined by your local power providers.
In some cases, electrical power is supplied by motor-generators. Shifts in
AC line frequency can cause system errors. Your HP CE can monitor the
frequency of the input AC line power and make recommendations, if
necessary.
HP SureStore E Disk Array 48: Site Prep Guide