About the resource usage graphs

HCP uses System Activity Reporter (SAR) data as the basis for resource usage reporting. SAR is a utility that runs on each node in the HCP system. Every ten minutes, SAR records statistics representing the average use of various resources in the node during the past ten-minute interval. The graphs on the Resources page in the System Management Console show these statistics for a subset of those resources.

For the CPU, memory, and network resources, the graphs can show either the average of the SAR statistics across all storage nodes or this average along with the SAR statistics for an individual storage node. For the logical volume resource, the graphs can show can show the SAR statistics only for an individual logical volume.