vCenter Server Performance
Intervals
A vCenter Server system aggregates
performance data from all ESXi systems that it manages. The amount of data
aggregated depends on the level setting configured for the vCenter Server. The
level settings are reflected in the
PerformanceManager.historicalInterval
property
for the vCenter Server system.
historicalInterval
is an array of
PerfInterval
data objects that
define four different level settings, 1 through 4.
The following table lists the default values for
the performance intervals on a vCenter Server system.
Key
| Name
| Sampling Period
| Length
| Enabled
| Level
|
|---|---|---|---|---|---|
1
| Past Day
| 300
| 86400
| TRUE
| 1
|
2
| Past Week
| 1800
| 604800
| TRUE
| 1
|
3
| Past Month
| 7200
| 2592000
| TRUE
| 1
|
4
| Past Year
| 86400
| 31536000
| TRUE
| 1
|
By default, the collection level is set to 1 for
each of the four intervals. Using the default level, a vCenter Server will
collect data for all performance counters that specify collection level 1.
Using the default length value, a vCenter Server will save collection data for
the following time periods:
- 5-minute samples for the past day
- 30-minute samples for the past week
- 2-hour samples for the past month
- 1-day samples for the past year
Data older than a year is purged from the
vCenter Server database.