generalized practices. The difference between the Calibrated Max Power and Peak Observed Power represents the potential power capacity that you can reclaim by applying the power cap value. The green range between the circuit Capacity and the Power Cap represents available circuit capacity.
Figure 7: Power meter summary for a server
Insight Control lets you identify potential electrical overloads at the PDU, rack, and data center level. It also allows users to identify potential thermal overloads at the rack level. In Figure 8, the red range between the Calibrated Max Power and the circuit Capacity represents the potential overload of the circuit. This means that an overload would occur if all of the servers running the application were to consume as much power as they consumed during the benchmark measurement at the last boot. In this case, setting a cap at the PDU capacity would not impact the performance of the servers. But it would protect the circuits from an overload by an unexpected increase in application workload.
Figure 8: Power meter summary for a rack of servers
Data center thermal profiles
Although the overall cooling in your data center may be sufficient, there may be areas with poor airflow, excessive heat output, or airflow mixing at the ends of aisles. Insight Control lets you identify such areas by displaying your data center’s temperature profile. The profile is based on data from thermal sensors in each ProLiant server.
12