Uninterruptible Power Supply (Ups) - HP StorageWorks XP10000 Disk Array Site Prep Manual

Potential source
Wall outlets
Lightning
Electromagnetic
interference

Uninterruptible power supply (UPS)

Most disk array units are installed in data centers where a UPS strategy is already in
place. However, if you are making your first large disk array purchase, you may need
a separate UPS solution.
CAUTION:
If you are planning or already have a site-wide UPS, HP recommends against using a
product UPS powered by a site-wide UPS for the XP10000.
Make sure your UPS satisfies the power requirements listed under
and power consumption
in Chapter 3.
52 Site requirements
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 distribution 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
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 disk array is specifically designed to reduce its susceptibility to
radiated 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.
in this chapter and also under
Heat dissipation
AC line voltage requirements