Power; Uninterruptible Power Supply; Power Distribution Guidelines - Qlogic 12000 Site Planning Manual

Power

Uninterruptible Power Supply

Consider the following when selecting Uninterruptible Power Supply (UPS)
equipment:
• The minimum amperage requirements for a UPS:
• Calculate VA (Volt-Amps): Locate the voltage and amperage requirements
for each piece of equipment (refer to
to get VA.
• Add the VA from each piece of equipment together to find the total VA
requirement. Then add 30% to determine the minimum amperage
requirements for the UPS.
• Transition time (the time necessary for the UPS to transfer from utility power to
full-load battery power).
• The longest potential time period the UPS might be required to supply backup
power.
• Whether or not the UPS unit also provides online protection.

Power Distribution Guidelines

The following section details power distribution guidelines and recommendations
for the QLogic 12800 series.
The power supplies for the 12800 series have a maximum inlet current of
15amps @ 110volts and 6amps @ 220volts. Please observe power outlet,
power strip and extension cable ratings.
Do not exceed 80% of the ampere rating limit of the power outlet, power strip
or an extension cable that the equipment is plugged into. As such, for any
given system, the power delivery system/power supplies cannot exceed the
maximum amperage. For the 12800-360 and 12800-180 it is recommended
to power the systems over 220 volts.
CAUTION!
High-powered systems, such as the 12800-120, 12800-180 and
12800-360 can place significant loads on power distribution units
(PDUs) and uninterupable power supplies (UPSs). It is recommended
to calculate the total amperage and power that a PDU or UPS needs to
handle.
IB0054611-00 A
Table 1-3). Multiply the numbers together
2–Site Planning
Power
2-3