HP ML150 HP Power Capping and Dynamic Power Capping for ProLiant servers techn - Page 1

HP Power Capping and HP Dynamic Power Capping for ProLiant servers technology brief, 2nd edition Abstract...3 Introduction...3 Basics of server power control ...3 Processor P-states ...4 Clock throttling ...5 How power capping functions...6 Maintaining power consumption below the cap 6 Minimum and maximum power consumption for a server 6 Differences between HP Dynamic Power Capping and HP Power Capping 7 Power provisioning and Dynamic Power Capping 7 Support for Power Capping in ProLiant servers 8 Group power capping for servers through Insight Power Manager 8 Enclosure Dynamic Power Capping ...9 Elements of an enclosure power cap 9 Enclosure Dynamic Power Capping operation 10 Active power reallocation ...11 Enclosure Dynamic Power Capping in mixed blade environments 11 Opting out servers...11 Setting power caps for servers...12 Setting a power cap for a single server 12 Setting a power cap for a group of servers 14 Setting an BladeSystem enclosure power cap 15 Setting a power cap for a group of enclosures 16 Using power capping in data center provisioning 17 Choosing effective power caps ...17 Power capping to peak power consumption 19 Power capping to average power consumption 21 Using Enclosure Dynamic Power Capping in power provisioning 21 Additional uses for power capping ...22 Power capping for emergency management 22 Time-of-day power capping ...23 Subtleties of power capping...24 Avoiding power capping conflicts within groups 24 Powering-up groups of servers when using Dynamic Power Capping 24 Setting low or unattainable power caps on servers 24 Peak power reporting and Dynamic Power Capping 25