Stratus ftServer 2900 Series, Планирование и руководство по установке

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Rack Configuration Planning 5-1
Chapter 5
Rack Configuration Planning
5-
For information about planning a rack configuration, see:

“Using PDUs” on page 5-1

“Determining PDU Requirements” on page 5-2

“Example of PDU Usage Calculation” on page 5-4
Using PDUs
ftServer systems have two power receptacles. Correspondingly, two power distribution
units (PDUs) provide power to the receptacles.
Use of PDUs is optional unless you have a support agreement with Stratus. If you do
have a support agreement with Stratus, use pairs of PDUs to provide AC power to
systems and components in a cabinet
if six or more power cords would otherwise
exit from the cabinet .
The A-side (top) PDU provides power to:

The A-side of each system

The A-side of a storage enclosure

Any rack-mounted tape drives
The B-side (bottom) PDU provides power to the other side of each system and to the
B-side of a storage enclosure.
Because the A-side PDU always uses at least as many power cords and consumes at
least as much power as the B-side PDU, plan the cabinet configuration so that the
A-side PDU can support the configuration.
N O T E S
1. Connect each PDU to a separate AC power source.
2. Install a maximum of two pairs of PDUs in a rack.