HP ProLiant DL590/64 ProLiant DL590/64 Server Technology - Page 12

Redundant Power System, The ProLiant DL590/64 server supports three 1250-watt primary power supplies.

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TC020702TB TECHNOLOGY BRIEF (cont.) ... Redundant Power System The power subsystem in the ProLiant DL590/64 server is completely redundant. Redundant line cords allow customers to provide two AC feeds to the server from different power grids (see Figure 10). The line cords connect to a switch in the back of the server that senses when AC power from the primary feed is beginning to fail. It immediately switches to the redundant feed with absolutely no downtime to the server. As soon as the primary feed returns to its specified limits of operation, the server will automatically switch back to the primary source. Note, however, that the AC line redundancy feature functions only with use of high-line power. Figure 10: Dual AC feeds allow redundancy throughout the power subsystem. The ProLiant DL590/64 server also uses intelligent, redundant, hot-plug power supplies to reduce downtime. The server supports three dual-rated 1250-watt/700-watt primary power supplies (Figure 11) to deliver 48 volts DC power to the server. In addition, three corresponding system power modules (Figure 12) convert the 48-volt DC power to provide 3.3, 5, or 12 volts to the server's components. Figure 11: The ProLiant DL590/64 server supports three 1250-watt primary power supplies. 12

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T
ECHNOLOGY
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Redundant Power System
The power subsystem in the ProLiant DL590/64 server is completely redundant.
Redundant line
cords allow customers to provide two AC feeds to the server from different power grids (see
Figure 10).
The line cords connect to a switch in the back of the server that senses when AC
power from the primary feed is beginning to fail.
It immediately switches to the redundant feed
with absolutely no downtime to the server.
As soon as the primary feed returns to its specified
limits of operation, the server will automatically switch back to the primary source.
Note,
however, that the AC line redundancy feature functions only with use of high-line power.
Figure 10:
Dual AC feeds allow redundancy throughout the power subsystem.
The ProLiant DL590/64 server also uses intelligent, redundant, hot-plug power supplies to reduce
downtime.
The server supports three dual-rated 1250-watt/700-watt primary power supplies
(Figure 11) to deliver 48 volts DC power to the server.
In addition, three corresponding system
power modules (Figure 12) convert the 48-volt DC power to provide 3.3, 5, or 12 volts to the
server’s components.
Figure 11:
The ProLiant DL590/64 server supports three 1250-watt primary power supplies.
12
TC020702TB