HP Onboard Administrator - Manual (Page 80)

First Time Setup Wizard 80
NOTE: Dynamic Power is supported with all c3000 power supplies. It supports c7000 power
supplies only if operating with high-line input voltage (such as 220V AC). It is not supported with
c7000 -48V DC power supplies.
NOTE: For OA v4.01 and later, the factory default value associated with the Dynamic Power
setting was changed from enabled to disabled. The operating efficiency of the currently available
HP Gold (92% efficient) and HP Platinum (94% efficient) enclosure power supplies makes this
firmware-based power management strategy unnecessary. The Dynamic Power setting is
recommended only for HP enclosure power supplies with an efficiency value less than 92%.
When upgrading to OA v4.01 or later, the current Dynamic Power setting is retained after the
upgrade. For more information, see the Customer Advisory c03957955
( http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c03
957955 ).
Power Limit
Do not set a Static Power Limit or Enclosure Dynamic Power Cap on an empty enclosure.
Mode Insight Display
name
Description
Enclosure Dynamic
Power Cap None An optional feature that enables you to cap the servers in an
enclosure as a group. As the servers run, the demand for
power varies for each server. A power cap for each server is
automatically adjusted to provide the server with enough
power to meet workload demands while still conforming to
the Enclosure Dynamic Power Cap. A redundant OA board
is required for setting the Dynamic Power Cap feature.
The feature is enabled with three configuration parameters:
• Dynamic Power Cap—Total enclosure average power
will not exceed Dynamic Power Cap.
• Derated Circuit Capacity—Average power on a single
circuit will not exceed Derated Circuit Capacity.
• Rated Circuit Capacity—Peak power on a single circuit
will not exceed Rated Circuit Capacity.
When configuring these parameters, the Derated Circuit
Capacity must be at least as large as the Dynamic Power
Cap and no larger than the Rated Circuit Capacity.
The Dynamic Power Cap is used to limit the enclosure power
consumption based on a cooling constraint that might be
lower than the Derated Circuit Capacity. The Derated Circuit
Capacity is used to limit the enclosure average power
consumption on a circuit. The Rated Circuit Capacity is used
to limit the enclosure peak power consumption on a circuit.
If you need to restrict an enclosure electrical load and
thermal output, an Enclosure Dynamic Power Cap is better
than a Static Power Limit. Enclosure Dynamic Power Cap
enables more blades to power on than a Static Power Limit.
For a complete list of BladeSystem server blades supported
by Enclosure Dynamic Power Capping, see the HP website
( http://www.hp.com/go/dpc ).
Static Power Limit Power Limit An optional setting to limit power. Whenever you attempt to
power on a device, the total power demands of the new
device and of the devices already on are compared against
this Static Power Limit. If the total power demands exceed the