HP Integrity Superdome 2 Server - Manual (Page 131)

Power Management screen
To set the power management options in Onboard Administrator, go to the menu on the left and
select the enclosure to be managed, and then click Power and Thermal. The Power Management
page appears below. Click Power Management to display the following choices:
•
AC Redundant
•
Power Supply Redundant
•
Not Redundant
Beneath the main power management choices is the Dynamic Power Savings mode check box
which enables you to enable Dynamic Power Savings Mode.
The AC Input VA Limit box enables you to set a VA limit for the enclosure. After this limit is met by
the enclosure, it will not allow any additional blades, power supplies, fans, or switches to power
on. If a value is entered into the VA Limit box that is lower than the now used VA for the enclosure,
the enclosure does not power off any devices within the enclosure. However, if a device is powered
off, it cannot power on because of the VA limit rule set in the Onboard Administrator power
management settings.
NOTE: If redundancy mode is set to Redundant, AC Redundant, or Power Supply Redundant,
and power redundancy is lost, then you must either add additional power supplies or change the
redundancy mode setting in the Onboard Administrator to restore Power Subsystem status. See
the Insight Display for corrective steps.
The HP Superdome 2 Enclosure power management system enables you to customize the
configuration of the enclosure. You can select from the different modes on the Onboard Administrator
Power Management screen. The power modes are explained in the following table.
Description Insight Display
name Mode
For dc power supplies only. In this configuration, N upper and N lower
power supplies are used to provide power and N upper and N lower Redundant Redundant
power supplies are used to provide redundancy (where N can equal
1, 2, or 3). Up to three upper and three lower power supplies can fail
without causing the enclosure to fail. When correctly wired with
redundant dc line feeds, this configuration also ensures that a dc line
feed failure does not cause the enclosure to power off.
For ac power supplies only. In this configuration, N upper and N lower
power supplies are used to provide power and N upper and N lower AC Redundant AC Redundant
power supplies are used to provide redundancy (where N can equal
1, 2, or 3). Up to three upper and three lower power supplies can fail
without causing the enclosure to fail. When correctly wired with
redundant ac line feeds, this configuration also ensures that an ac line
feed failure does not cause the enclosure to power off.
Up to six upper and six lower power supplies can be installed with
one upper and one lower power supply always reserved to provide Power Supply Power Supply Redundant
redundancy. In the event of a single upper or lower power supply
failure, the redundant power supply in the same section (upper or
lower) takes over the load. A line feed failure of more than one power
supply in a section causes the system to power off.
There is no power redundancy and no power redundancy warnings
are given. If all power supplies are needed to supply Present Power, None Not Redundant
then any power supply or line failure may cause the enclosure to
brown-out.
If enabled, Dynamic Power automatically places unused power supplies
in standby mode to increase enclosure power supply efficiency, thereby Dynamic Power Dynamic Power
minimizing enclosure power consumption during lower power demand.
Increased power demands automatically return standby power supplies
Enclosure power management 131