Information Technology Reference
In-Depth Information
Past month: 2 hours per sample at statistics level 1
◆
Past year: 1 day per sample at statistics level 1
◆
Figure 3.30
You can customize
statistics collection
intervals to support
broad or detailed
logging.
By selecting an interval and clicking the dropdown list, you can customize the interval
coni guration. You can set the interval, how long to keep the sample, and what statistics
level (level 1 through level 4) vCenter Server will use.
There are four Statistics Collection levels dei ned in the user interface:
Level 1
Has the basic metrics for average usage of CPU, memory, disk, and network. It
also includes data about system uptime, system heartbeat, and DRS metrics. Statistics for
devices are not included.
Level 2
Includes all the average, summation, and rollup metrics for CPU, memory,
disk, and network. It also includes system uptime, system heartbeat, and DRS metrics.
Maximum and minimum rollup types as well as statistics for devices are not included.
Level 3
Includes all metrics for all counter groups, including devices, except for mini-
mum and maximum rollups.
Level 4
Includes all metrics that vCenter Server supports.
Database Estimates
By editing the statistics collection confi guration, you can see the estimated database size change
accordingly. For example, when you reduce the 1-day collection interval to 1 minute as opposed to 5
minutes, the database size jumps from an estimated 14.32 GB to an estimated 26.55 GB. Similarly,
if the collection samples taken once per day are kept for 5 years instead of 1 year, the database size
jumps from an estimated 14.32 GB to an estimated 29.82 GB. h e collection intervals and retention
durations should be set to a level required by your company's audit policy.
Runtime Settings
The Runtime Settings area lets you coni gure the vCenter Server unique
ID, the IP address used by vCenter Server, and the server name of the computer running
