Software for Linux Owner manual

to avoid or even delay new data center expansion can save your company thousands of dollars.
Insight Control power management provides you the following advantages:
• Knowledge to optimize power confidently
Reclaim trapped power and cooling capacity◦
◦ Extend the life of the data center
• Control to safely achieve
More complete utilization of existing power/cooling infrastructure◦
◦ Higher uptime for mission critical applications
Avoiding power provisioning errors
For scenarios like unintentionally adding more systems and devices than the limit in a data center,
or power redundancy errors for unavailability of redundant power, any increase in power demand
may lead to tripped breakers and unexpected downtime. For such scenarios, Insight Control power
management helps you to determine the actual power required for the IT equipments and provision
the required power to meet the need without using the excess capacity to protect the power supply
infrastructure.
Power Capping
Power Capping and Dynamic Power Capping
HP Power Capping and HP Dynamic Power Capping — the power management features of HP
ProLiant servers, are implemented in system hardware and firmware and are independent of
operating systems or applications. Using the power monitoring and control mechanisms built into
ProLiant servers, the Power Capping feature is specifically designed to allow an administrator to
limit, or cap, the power consumption of a server or a group of servers. This capability provides
increased flexibility in data center planning by allowing the administrator to manage data center
parameters that are directly influenced by server power consumption, including data center cooling
requirements and electrical provisioning. The Power Capping feature also allows the administrator
to control server power consumption in emergency situations such as the loss of primary AC power.
Both HP Dynamic Power Capping and HP Power Capping are designed to achieve the same
general goal of maintaining the power consumption of a server at the same level or at a lower
level of a specified value, referred to as the cap value. However, HP Dynamic Power Capping
monitors the power consumption and maintains the power cap of a server much more faster than
HP Power Capping.
Enclosure Dynamic Power Capping
Enclosure Dynamic Power Capping is an enhancement of Dynamic Power Capping designed
specifically for HP BladeSystem enclosures. Enclosure Dynamic Power Capping is considered as
the 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. Also, it can be viewed
as a more powerful enhancement 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.
For more information on power capping, see www.hp.com/go/dpc.
Powering-up groups of servers
HP Dynamic Power Capping is a powerful tool for controlling the steady-state power consumption
of servers in real time. However, it does not control the power consumption of servers at start-up.
If a group of servers on the same PDU are powered up simultaneously, for example by using a
Data Center Power Control rule, there will be a window during start-up before Dynamic Power
16 Key concepts