Compaq ProLiant DL360 Ultra-Dense Server Deployment in Compaq Racks

Compaq ProLiant DL360 Ultra-Dense Server Deployment in Compaq Racks 46
128H-1100B-WWEN
3.8 Configuration-H: 35 De-rated Servers,
Stand-Alone Rack, 24A High Voltage PDU
This configuration is the same as Configuration-G, except one PDU was removed for easier cable
installation. The following calculation verifies supporting 42 servers (de-rated Power Budget)
with 24A High Voltage PDUs:
Two PDUs will be supporting 35 servers, 5 KVM switches and 1 FPD. For simplicity, assume the
KVM switches and the FPD consumes about the same amount of power as the servers. Therefore,
each PDU will need to support up to 21 servers or devices. A 24A Low Voltage PDU supporting
21 devices can allocate each device with maximum current of (24/21=) 1.15A. Assuming 208V,
the allocated maximum input power for each device will be
1.15A * 208V = 240W
The maximum thermal dissipation per device will be
240W * 3.41 = 818 BTUs/hour
For 42 devices, the total thermal dissipation will be (818*41=) 33,555 BTUs/hour.
In Section 2.2, a fully configured system was measured to consume lower than 200W (Table 2-3,
Server Configuration-5). Hence, if each de-rated server configuration input power is lower than
240W then 42 devices (35 servers and 6 other devices) can be supported via this configuration
summary.