HP ProLiant DL785, User Manual, Page: 96 / 110

Value Specification
47- 63 Hz 47- 63 Hz Rated input frequency
14A at 200 V ac 24A at100 V ac Rated input current
2800 W 2400 W Rated input power
9554 8189 BTUs per hour
High line
3
Low line Power supply output
1200 W per P.S.U. at 3 P.S.U. active 800 W per P.S.U. at 3 P.S.U. active Power supply output
Acoustic Noise
4
LWAd 7.6 B Idle
LpAm 58 dBa
LWAd 7.6B Operating
LpAm 58 dBa
1 all hard drives, power supplies, and processors installed
2 one hard drive, three power supplies, and four processor cells installed
3
IMPORTANT: To ensure the ProLiant DL785 G5 Server has sufficient power during normal operation, a server
configured with HP supported high powered graphics cards rated at 225 W or more require high line (200 - 240 V)
ac server configuration. As a precaution, if these cards are installed on a low line (100 - 127 V) ac configured server
the server will halt at Power-On Self-Test with a "Power Supply Solution not Sufficient" message and only boot to
RBSU.
At POST, the ProLiant DL785 G5 server automatically detects whether the power supplies are connected to high-line
power or low-line power. If the server is configured with high powered graphics cards, the system will halt if it
detects that the server is plugged into low-line power. This occurs by design because system configured high power
graphics cards, with a large amount of memory, hard drives, or other options might require more power than can
be provided by low-line power. POST halts this low-line configuration as a precaution against the server having
insufficient power during operation.
If a you wish to operate a server with high power graphics cards when utilizing low-line power, the power supply
solution should be verified as sufficient using the ProLiant DL785 G5 power calculator at
http://
h30099.www3.hp.com/configurator/calc/Power%20Calculator%20Catalog.xls
. If the power solution
is not deemed sufficient, the server may not have sufficient power to operate normally. If the solution is deemed
sufficient, a ROM-Based Setup Utility option, outlined below, can be used to allow the system to operate in this
configuration.
If the ProLiant DL785 G5 power calculator has determined that the server can be reliably powered at low-line power
with high power graphics cards installed, perform the following steps to override the Power Supply Requirements
setting in ROM-Based Setup Utility (RBSU):
1. Power down the server and remove the high power graphics cards.
2. Power the server back on and press F9 during POST to access RBSU.
3. Select Advanced Options .
4. Scroll down to Power Supply Requirements Override and choose to enable it.
5. Power down the server and reinstall the graphics cards previously removed.
4 Listed are the declared A-Weighted sound power levels (LWAd) and declared average bystander position A-Weighted
sound pressure levels (LpAm) when the product is operating in a 23°C ambient environment. Noise emissions were
measured in accordance with ISO 7779 (ECMA 74) and declared in accordance with ISO 9296 (ECMA 109).
96 Specifications