Sources Of Electrical Interference - HP XP20000/XP24000 Manual

Hp storageworks xp24000/xp20000 disk array site preparation guide (ae002-96055, september 2010)

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Sources of electrical interference

Ensure that the disk array is protected from sources of electrical interference.

Table 16 Sources of electrical interference

Potential source

Wall outlets

Lightning

Electromagnetic interference

Description

Convenience power outlets for building maintenance equipment (such

as vacuum cleaners and floor buffers) must be wired from circuit breakers

on a power panel separate from the computer system panel. The ground

wires from these outlets must be connected to the normal building distri-

bution panel and not to the system ground. If a separate power source

and separate ground are not provided, operation of janitorial equipment

can induce electrical noise and cause abnormal operation of the computer

system. Your electrician can verify whether or not maintenance outlets

are on separate panels.

In geographical areas subject to lightning storms, it may by advisable

to install lightning protection for both personnel and computer systems.

The principles of lightning protection and personnel safety are outlined

in detail in the lightning protection code contained in the National Fire

Protection Association (NFPA) Handbook.

The HP system is specifically designed to reduce its susceptibility to radi-

ated and conducted interference. Electromagnetic interference can cause

a variety of system problems. An HP representative can advise you about

the most common causes of electromagnetic interference.

XP24000/XP20000 Disk Array Site Preparation Guide

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