HP ProLiant DL740 Server - Manual (Page 49)

Installing the Server in a Rack
Power Supplies
The following requirements apply to power supplies:
• The ProLiant DL740 server has two hot-plug, redundant power supplies.
Depending on the system load configuration and input voltage (110 or 220),
more than one power supply may be required to power the system.
• Power supplies are load balancing.
• Power supplies must be run at highline (200−240 VAC) for redundancy.
To estimate the power requirements for a specific server configuration, use the
ProLiant DL740 Server Power Calculator located on the ActiveAnswers Online
Solutions website:
activeanswers.compaq.com
1. Select System Configurator under Tools.
2. Click Select Product Family and select ProLiant Servers.
3. Select ProLiant DL740 Server from the list.
The subsequent Web pages contain information and a link to the ProLiant DL740
Power Calculator.
Power supply advanced features include auto line sensing, which means that no
switch is needed to select the appropriate line voltage.
NOTE: Power supplies provide 1100 watts of power to the system from highline
(200
−240 VAC) input line voltage and 800 watts of power from lowline (100−120 VAC) input
line voltage.
2-6 HP ProLiant DL740 Server User Guide
HP CONFIDENTIAL
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