Disk Arm Utilization by Hour
Hourly Disk Arm Utilization Graph.
The Disk Arm Utilization by Hour graph shows the average disk arm utilization by hour for the last
month, or the month or period you select. The Peak Max indicator denotes the disk arm
utilization for the single highest hour during the period.
The information under the Facts heading at the bottom of the graph states the recommended
guidelines for marginal and critical peak utilization.
Note for systems with SAN-based storage
: Each server/LPAR’s graph for disk arms will reflect
utilization of the portion of the SAN that is accessed by that server/LPAR. In rare cases, multiple
servers using storage on the same SAN unit may result in a slight increase in displayed disk arm
utilization.
PM for Power Systems Graph Reference Document
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