Enclosure Dynamic Power Capping; Group Power Capping; Elements Of An Enclosure Power Cap - Compaq BL10e - HP ProLiant - 512 MB RAM Introduction Manual

Figure 3. Apportioning a group power cap to individual servers in the group
Individual Servers
1000 watts (Power supply maximum)
400 watts
200 watts
500
200
125
1000
375
200
1000
400
200
For ProLiant ML and DL servers, group power capping apportionment works exactly the same on
servers supporting Dynamic Power Capping as those supporting basic Power Capping. For server
blades, there is the new and more advanced Enclosure Dynamic Power Capping.

Enclosure Dynamic Power Capping

Enclosure Dynamic Power Capping is a special implementation of Dynamic Power Capping designed
specifically for HP BladeSystem enclosures. In one sense, it is a higher level of power management
functionality since an administrator sets and maintains a power cap at the enclosure level and not
directly at the server or blade level. In another sense, it can be viewed as a more powerful
implementation of group power capping for an enclosure, since setting a power cap for the enclosure
indirectly creates power caps for the server blades within it. The Onboard Administrator (OA) then
actively manages these power caps.

Elements of an enclosure power cap

With Enclosure Dynamic Power Capping, an administrator sets a power cap for an entire
BladeSystem enclosure, not simply for the server blades in the enclosure. Total power consumption for
an enclosure is the sum of the power used by of all of the following:
The server blades
I/O peripherals for the enclosure (interconnects, etc.)

Group Power Capping

(Maximum)
320 watts (Apportioned Cap)
(Minimum)
170
305
320
Servers as a Group
3500 watts
(Group power supply
maximum)
1375 watts
(Group maximum)
725 watts
(Group minimum)
1115 watts
(User set group power cap)
9