Since the ProLiant DL160 G6 accommodates only one power supply, power redundancy will have to
be provided upstream of the server’s single AC connection. Figure 10 shows a rack-level power
redundancy scheme using an uninterruptable power supply (UPS). With four 7-outlet PDUs and a total
input current capability of 5000 VA, the HP R5500 UPS would be a good fit and would provide
adequate VA and outlet headroom for server expansion or peripheral devices. Using the Power
Advisor calculations indicated in Figures 8 and 9, the total heat produced by 24 servers would be
12785.28 BTU/hr., an amount that can be cooled using conventional means in most data center
environments.
Figure 10. 42U rack configuration of 24 HP ProLiant DL160 G6 servers with battery backup power
DL160 G6
servers
1 thru 12
DL160 G6
servers
13 thru 24
Physical Configuration
Functional Block Diagram
AC Bus
208 VAC
PDU
PS
DL160 G6
servers
1 thru 12
PS
DL160 G6
servers
13 thru 24
HP
R5500 UPS
HP R5500 UPS
PDU
PDU
PDU
Figure 10 shows only one example—a number of configurations are possible. By using row-level
power redundancy and consolidating server management with a remote console, users can achieve a
maximum density configuration (42 DL160 servers).
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