Compaq BL10e - HP ProLiant - 512 MB RAM Introduction Manual page 11

that the peak value observed represents the true peak power usage for the c7000
enclosure in question.
Based on observed power usage, continue to add more blades to the c7000 enclosure
•
until power consumption approaches the 4300 Watt Dynamic Power Cap. Based on our
TCO benchmark comparison, we were able to fit 14 BL460c G1 servers in each
enclosure for a total of 28 servers for the 8.6 kW circuit. .
Finally, continue to observe power usage for each c7000 enclosure using HP Insight
•
Control Environment. If the Dynamic Power Cap for the enclosure is invoked too
frequently, it may have an adverse impact on server performance. In these situations, you
may want to remove blades from the enclosure or raise the enclosure Dynamic Power
Cap to remove any negative performance impact. In cases where you are raising the
cap, proceed with caution as the sum of the single enclosure Dynamic Power Caps may
not exceed the capacity of the branch circuit and PDUs to which they are attached.
The following table summarizes the best practice for establishing Dynamic Power Caps for HP
BladeSystem enclosures.
Table 7. Steps to Best Practices with ServerBlade Servers
Step
Step 1
Step 2
Step 3
Step 4
Step 5
Action
Update server BIOS, iLO firmware, Onboard Administrator
firmware, and Insight Control Environment software.
Work with facilities to size available electrical (and cooling)
capacity and to establish a goal for the number of enclosures per
circuit.
Use the HP BladeSystem Sizer to estimate the number of blades
that can be safely added to each enclosure without performance
impact.
Observe power usage using Insight Control Environment for a
complete application duty cycle and either adjust Dynamic Power
Cap for c7000 enclosure based on peak power usage or add
additional blades to the enclosure.
Continue to observe power usage and adjust if Dynamic Power
Cap is invoked frequently.
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