Stratus ftServer 2600, Site Planning Manual

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AC Power and HVAC Service Requirements
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Stratus ftServer 2600, 4500, and 6300 Systems: Site Planning Guide (R638)
Connecting a System Directly to Separate AC Sources
If you do not connect your ftServer system or PDUs to a UPS, provide two AC power
sources that are as electrically independent of each other as the installation site allows.
At a minimum, the two power sources must be powered by separate circuit breakers
(maximum of 20A) to AC power and, if possible, be independent of each other beyond
that level. The more electrical separation between the two power sources, the less
likely they will both fail at the same time. Due to redundancy in ftServer systems, power
to either side of the system keeps the system in operation, although the system is no
longer fault-tolerant with regard to power.
Figure 2-1 shows how to connect rack-mounted ftServer 2600, 4500, and 6300
systems directly to two separate AC power sources. Figure 2-2 shows how to connect
PDUs directly to two separate power sources.
Figure 2-1. System Connected Directly to AC Power
1 A-side power cord 3 AC power outlets
2 B-side power cord 4 Circuit breakers (maximum of 20A)
1
2
3 4
3 4
B
A
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