Performance Counter Data Storage

The performance interval collection level (PerfInterval.level) defines the set of counters for which the vCenter Server stores performance data. The Server will store data for counters at the specified level and for counters at all lower levels.

By default, all the performance intervals specify collection level one. Using these defaults, the vCenter Server stores performance counter data in the vCenter database for all counters that specify collection level one. It does not store data for counters that specify collection levels two through four.