Connecting with no power redundancy configured
If no power redundancy is configured, the total power available is defined as the power available from all power supplies installed (six power supplies installed = up to 7200W). Any power supply or AC line failure may cause the system to power off.
The Onboard Administrator manages power allocation rules of various components and can limit overall power capacity for the enclosure. More information on power management is available in the technology brief entitled “Managing the HP BladeSystem
Dynamic Power Saver mode
Dynamic Power Saver mode provides power load shifting for maximum efficiency and reliability. Dynamic Power Saver technology, first introduced with the BladeSystem
Dynamic Power Saver mode is active by default since it saves power in the majority of situations. When enabled, Dynamic Power Saver mode saves power by running the required power supplies at a higher rate of utilization and putting unneeded power supplies in a standby mode. Dynamic Power Saver uses the fact that most power supplies will operate less efficiently when lightly loaded and more efficiently when heavily loaded. A typical power supply running at 20 percent load could have an efficiency rating as low as 60 percent. However, at 50 percent load it could be up to 90 percent efficient, providing a significant savings in power consumption.
Dynamic Power Saver is enabled by the Onboard Administrator module. When this feature is enabled, the total enclosure power consumption is monitored in
NOTE
In redundant environments, a minimum of two power supplies are always active, and the maximum load that can be reached on any power supply is 50 percent. Once the 50 percent load is reached, another two power supplies are activated to ensure that redundancy is maintained at all times.
Power Regulator
HP’s ProLiant Power Regulator provides
Power Capping for each server blade
Using updated iLO 2 firmware (version 1.30) and updated System ROM/BIOS (dated May 1, 2007), HP BladeSystem
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