IBM XIV Gen3 Series, Руководство по планированию

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Procedure
To complete the rear-door heat exchanger site preparation, see Chapter 10,
“Planning for the rear-door heat exchanger,” on page 71.
Planning for power requirements
Ensure that your operating environment meets the ac-power and voltage
requirements.
The IBM XIV Storage System contains three uninterruptible power supplies and
redundant main-power cables that maintain power to the XIV system in the event
of an ac-power loss.
The three uninterruptible power supplies in the XIV system are recognized by the
central uninterruptible power supply system in the main data center as standard
modern storage-system power supplies. The XIV system does not impose any
harmful characteristics to the central uninterruptible power supply in the main
data center.
The XIV system has redundant main-power cables. For two-main-power-cable
configuration, you must supply power from two independent sources of electricity.
Consult an IBM service representative to discuss power source options for the
four-main-power-cable configuration.
Note: Removing all ac power from the XIV system causes an emergency
shutdown. All modified data is then saved to disks, and the XIV system turns off
within 5 minutes.
Customer responsibilities
v You must supply enough branch circuits to prevent overloading from the
equipment that you install.
v You must ensure that each electrical outlet is correctly wired and grounded to
prevent an electrical shock.
IBM responsibilities
v The IBM service representative complete several checks, including voltage and
grounding checks before the power to the XIV system is connected.
v The IBM service representative connects power to the racks and initially powers
on the equipment.
Power outlet requirements
Ensure that the installation site has the required power outlets.
Two independent power outlets are required for the two power cords that are
needed by each XIV system.
Important: To eliminate a single point of failure, the outlets must be independent.
This means that each outlet must use a separate power source and each power
source must have its own wall circuit breaker.
For the most reliable operation, do not use Ground Fault Circuit Interrupter
(GFCI), Earth Leakage Circuit Breaker (ELCB), and Residual Current Circuit
Breaker (RCCB) type circuit breakers with XIV systems. The XIV system is certified
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IBM XIV Gen3 281x-11x, 281x-21x, and 281x-314 Planning Guide