hp ProLiant DL320 generation 2 server high-density deployment technical white paper 22
configuration B: maximum flexibility (35 derated servers, low voltage)
The following calculation verifies supporting 35 servers (derated power budget) with 24 A
high-voltage PDUs:
Since there are 4 PDUs supporting 35 servers, each PDU will need to support up to 9 servers. A
24 A low-voltage PDU supporting 9 servers can allocate each server with maximum current of
24/9 = 2.67 A. Assuming 110 V, the allocated maximum input power for each server will be:
2.67 A * 110 V = 293.7 W
The maximum thermal dissipation per server will be:
293.7 W * 3.41 = 1002 BTUs/hour
For 42 servers, the total thermal dissipation will be 1002*35= 35,070 BTUs/hour.
In the “power and thermal budgeting” section, a fully configured system was measured to
consume lower than 250 W (Table 3, server configuration 4). Since the derated server
configuration input power is lower than 293 W, then 35 servers can be supported with this
configuration summary.
Table 12. Configuration B Summary
Configuration B Summary
Rack Contents
Units
35 Servers with all fixed or all sliding rails with cable trays
4 low voltage 24 A PDUs vertically mounted in the side panel compartments
Internal Cables
42 Power cords going to 4 PDUs in the side panels [These cables are supplied with the servers.]
Cables External to Rack
42 Management network cables from the optional RILOE RJ-45 connector to external switches
42 Data network cables from on-board RJ-45 to external switches, assuming use of only one LAN connection per
server
4 Input power cords from the rack to external power outlets
Site Utility Requirements (worst-case)
Power: 4 Dedicated 100 V-120 V 30 A branch circuits.
Thermal: Up to 35,070 BTUs/hour [This number is a worst-case. The actual BTUs/hour will depend on the operating
system/application software running and the server hardware configurations.]
Weight: Up to 1,690 lb (with sliding-rails) [The network cables are not accounted for since most implementations
route the network cables to the ceiling-hung cable rails outside of the rack.]
Configuration B Parts List
ProLiant DL320 Generation 2 Sliding Rail Option Kit, P/N
233274-B21
Low Voltage 24 A PDU Option, P/N 207590-D71
Vertical-Mount PDU Bracket Kit, P/N 191265-B21
Qty.
36
4
1
Notes
Optional for in-rack servicing
N.A.
Contains 8 PDU brackets
Note: This list does not include the rack, the servers and the network cables. At this time, only
one model of the high current (24 A) High Voltage PDU is available. This configuration can be
used in regions where NEMA electrical standards are followed.
To Next Page
Loading...
