Time-Of-Day Power Capping - HP Integrity NonStop NB54000c Introduction Manual

Time-of-day power capping

Insight Control has task-scheduling capabilities. Administrators can create time-of-day power capping for a server or
group of servers that lowers and raises power levels in a pre-determined pattern, typically on a daily cycle.
Lowering the power cap on a group of servers when electricity rates are highest will lower operating costs. It
decreases the average power use by the servers and, indirectly, decreases required cooling.
To construct a time-of-day power capping scenario, you must create scheduled tasks in Insight Control. In the SIM
interface, you access this scheduling capability using the Configure, Power Management, Power Usage Controls
menu.
Task scheduling 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 task
Figure 14. Defining the scheduled Insight Control task in Systems Insight Manager
Constructing a time-of-day power capping model actually requires creating at least two separate scheduled tasks in
Insight Control. The first step is to create a scheduled task to apply a power cap at a given time of day. Figures 13
and 14 show a power cap applied at 2:00 PM every day. Completing the time-of-day power capping requires
creating a second task to remove or raise the power cap.
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