2.5 Modifying Statistics Levels in vCenter Server
You can also modify the collection levels of host performance statistics on vCenter Server, specifying options that set the statistic collection intervals on hosts, and determine the frequency at which these statistic queries occur. In addition, option settings can also specify the length of time that statistical data is stored in the database and the type of statistical data that is collected.
Note The information provided here about performance statistic collection does not relate directly to the previous discussions about log files, but instead relates to vCenter Server statistics stored in a database. It is included here for completeness.