HP ProLiant DL280 HP Power Capping and HP Dynamic Power Capping for ProLiant s - Page 1

HP Power Capping and HP Dynamic Power Capping for ProLiant servers Technology brief, 2nd Edition Introduction ...3 Basics of server power control ...3 Processor P-states ...4 Clock throttling...4 How power capping functions...5 Maintaining power consumption below the cap 5 Minimum and maximum power consumption for a server 5 Differences between HP Dynamic Power Capping and HP Power Capping 6 Power provisioning and Dynamic Power Capping 6 Support for Power Capping in ProLiant servers 7 Enclosure Dynamic Power Capping ...8 Elements of an enclosure power cap 8 Operation of Enclosure Dynamic Power Capping 9 Active power reallocation ...10 Enclosure Dynamic Power Capping in mixed blade environments 10 Opting out servers ...10 Setting power caps for servers...10 Setting a power cap for a single server 11 Setting a power cap for a group of servers 13 Setting a BladeSystem enclosure power cap 13 Setting a power cap for a group of enclosures 14 Using power capping in data center provisioning 15 Choosing effective power caps ...15 Power capping to peak power consumption 17 Power capping to average power consumption 19 Using Enclosure Dynamic Power Capping in power provisioning 19 Power capping for emergency management 20 Time-of-day power capping ...21 Subtleties of power capping ...22 Avoiding power capping conflicts within groups 22 Powering up groups of servers when using Dynamic Power Capping 22 Setting low or unattainable power caps on servers 22 Peak power reporting and Dynamic Power Capping 23 Using HP Power Regulator in conjunction with power capping 23 Power capping and CPU utilization 23 Power capping and option cards ...23