HP ProLiant DL288 HP Power Capping and Dynamic Power Capping for ProLiant serv
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- HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 1
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 - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 2
Using HP Power Regulator in conjunction with power capping 25 Power capping and CPU utilization 25 Summary ...26 For more information...26 Call to action ...26 - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 3
tasks. Both HP Power Capping and HP Dynamic Power Capping are implemented in system hardware and firmware and are therefore not dependent on the operating system or applications. Using the power monitoring and control mechanisms built into ProLiant servers, power capping is specifically designed to - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 4
Server Power Usage Base Load 13% Hard Drives 4% PCI Slots 15% Processor 33% Memory 28% Fans 7% Processor P-states Processor performance states, or P-states, provide a quick and effective mechanism for adjusting processor power consumption and performance. Both Intel® and AMD® processors support - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 5
additional method for lowering processor power consumption. Depending on the processor model, the system BIOS can either reprogram the processor . Figure 2. Power versus performance characteristics for a typical Intel-based ProLiant server with three P-states WWaatttss DL360 G4 Power vs. Work - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 6
, such as the number of options installed in the server, have a predictable and static effect on server power consumption. Other factors -- including the temperature in the data center, the activity of the subsystems (CPU, memory, disk drives and I/O) and even the mix of instructions being executed - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 7
and system ROM BIOS Firmware control of Pstate/clock throttling through processor registers Once every 5 seconds 10 - 30 seconds Managing cooling provisioning Power provisioning and Dynamic Power Capping Basic Power Capping does an excellent job of maintaining average server power utilization at or - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 8
(for HP BladeSystem enclosures) At introduction, support for Dynamic Power Capping is available on a limited set of ProLiant servers and a larger set of ProLiant c-Class server blades. Many ProLiant G5 servers are capable of supporting Dynamic Power Capping once the appropriate BIOS and iLO firmware - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 9
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 - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 10
the individual server blades are increased. Figure 4. Power budgeting in Enclosure Dynamic Power Capping Enclosure Dynamic Power Capping Power Budgeting Enclosure Dynamic Power Cap Power used by unmanaged elements Enclosure Dynamic Power Cap Power Cap Lower Bound Blade Power Budget Power Cap - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 11
all server blades that support basic Power Capping or the faster Dynamic Power Capping. It also provides circuit breaker protection using either of these types of server blades. To accomplish this, Enclosure Dynamic Power Capping relies on the extra circuit capacity of enclosures configured with - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 12
Dynamic Power Capping as those supporting basic Power Capping. Servers supporting Dynamic Power Capping simply enforce the cap using the faster power management architecture. Setting a power cap for a single server Administrators can set a power cap for an individual server or server blade through - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 13
In Insight Power Manager, Power Capping is located beneath the HP Power Management Actions section of the interface, as shown in Figure 6. Figure 6. Setting a power cap using Insight Power Manager 13 - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 14
cap for a group of servers Insight Power Manger is the sole tool for setting power caps for groups ProLiant ML and DL servers. Using the IPM interface, an administrator can apply a power cap to the server group that is between the minimum power and the power supply rating of the entire group. This - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 15
either the Onboard Administrator or Insight Power Manager to set the power cap for a BladeSystem enclosure to any value between the power cap lower bound and the maximum available power for the enclosure. Figure 8 shows the Power Management screen from HP Onboard Administrator. This screen is where - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 16
enclosure will use this power cap to determine a blade power budget for the enclosure and to create power caps for the individual server blades. It will then continue to monitor and adjust the individual server blade power caps based on their power demands. Figure 9. Setting a power cap for a group - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 17
to achieve specific power savings or capacity planning targets. Figure 10 shows the output from the HP Power Calculator utility for a ProLiant DL380 G5 server configured with two Quad-Core Intel Xeon X5460 3.16-GHz processors, one 72-GB disk drive, and 8 GB of system memory. The results indicate - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 18
Figure 10. HP Power Calculator results for a configured ProLiant DL380 G5 server 18 - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 19
consumption denotes the arithmetic mean of all half-second power measurements recorded over the same timeframe. Figure 11. Group Power Consumption graph for a group of eight ProLiant DL380 G5 servers The peak power consumption for the server group running this particular workload is about 3116 watts - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 20
G5 servers (based on HP Power Calculator) Maximum power consumption when capping to peak Power 3384 watts 3116 watts Savings in power capacity 268 watts Additional servers that can be provisioned within the same cooling infrastructure 0.7 If all eight servers supported Dynamic Power Capping - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 21
required for an enclosure by setting an enclosure power cap. For example, consider an HP BladeSystem c7000 enclosure fully configured with 16 server blades. Provisioning the power to the total of the HP 2250W power supplies' specification requires delivering 7836 watts to the enclosure, typically - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 22
A common example would be a cooling system failure in part of a data center. In this situation, administrators can manually lower the power cap on a group of servers using IPM and power capping. This will quickly and efficiently lower server power consumption and heat generation in the affected area - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 23
using the Configure Insight Power Manager option under the top-level Configure menu. Scheduling a task consists of several steps, including defining the new power cap (Figure 13), and creating the schedule for applying the power cap (Figure 14). Figure 13. Setting a power cap as part of a scheduled - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 24
a set of non-overlapping SIM collections used specifically for power and cooling management. Powering-up groups of servers when using Dynamic Power Capping HP Dynamic Power Capping is a powerful tool for controlling the steady-state power consumption of servers in real time. However, it does not - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 25
to the aggregate minimum power for the enclosure and its server blades. Peak power reporting and Dynamic Power Capping Both iLO 2 and IPM report the power metrics for ProLiant servers, including peak power consumption. The power monitoring system for servers records peak power consumption as the - HP ProLiant DL288 | HP Power Capping and Dynamic Power Capping for ProLiant serv - Page 26
HP Power Management HP Insight Power Manager HP Integrated Lights-Out HP SIM page on hp.com Dynamic Power Capping TCO and Best Practices white paper Dynamic Power Capping support matrix HP Power Calculators page HP ProLiant Energy Efficient Solutions Power Regulator for ProLiant servers technology
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Abstract
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3
Introduction
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3
Basics of server power control
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3
Processor P-states
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4
Clock throttling
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5
How power capping functions
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6
Maintaining power consumption below the cap
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6
Minimum and maximum power consumption for a server
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6
Differences between HP Dynamic Power Capping and HP Power Capping
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7
Power provisioning and Dynamic Power Capping
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7
Support for Power Capping in ProLiant servers
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8
Group power capping for servers through Insight Power Manager
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8
Enclosure Dynamic Power Capping
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9
Elements of an enclosure power cap
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9
Enclosure Dynamic Power Capping operation
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10
Active power reallocation
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11
Enclosure Dynamic Power Capping in mixed blade environments
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11
Opting out servers
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11
Setting power caps for servers
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12
Setting a power cap for a single server
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12
Setting a power cap for a group of servers
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14
Setting an BladeSystem enclosure power cap
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15
Setting a power cap for a group of enclosures
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16
Using power capping in data center provisioning
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17
Choosing effective power caps
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17
Power capping to peak power consumption
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19
Power capping to average power consumption
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21
Using Enclosure Dynamic Power Capping in power provisioning
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21
Additional uses for power capping
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22
Power capping for emergency management
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22
Time-of-day power capping
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23
Subtleties of power capping
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24
Avoiding power capping conflicts within groups
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24
Powering-up groups of servers when using Dynamic Power Capping
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24
Setting low or unattainable power caps on servers
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24
Peak power reporting and Dynamic Power Capping
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25
HP Power Capping and HP Dynamic Power
Capping for ProLiant servers
technology brief, 2
nd
edition