vSphere Performance and Data Storage

The following sections provide information about modifying the operation of the PerformanceManager and vSphere Server performance data collection and storage.

Modifying Historical Intervals
Modifying Performance Counter Collection Levels

Modifying Historical Intervals
Changes to a vCenter performance interval are global and apply to all entities in the system. VMware recommends that you do not modify the historical intervals. The PerfInterval data objects in the PerformanceManager.historicalInterval array are related. Modifications to a performance interval affects the entire system and may cause problems.
Modifying Performance Counter Collection Levels
The PerformanceManager provides the UpdateCounterLevelMapping method to change the collection level for individual performance counters (PerfCounterInfo.level). Consider carefully the performance and storage consequences of using the UpdateCounterLevelMapping method. If you use this method, you may cause a significant increase in data collection and storage, along with a corresponding decrease in performance. vCenter Server performance and database storage requirements depend on the collection levels defined for the performance intervals (PerformanceManager.historicalInterval) and the collection levels specified for individual performance counters (PerfCounterInfo.level).

Parent topic: vSphere Performance