Specifications

Basic System Administration
286 VMware, Inc.
Figure 18-2. Default Rollup of Statistics Data
Youcontrolhowlongstatisticaldataisstoredinthedatabasebyenablingordisabling
acollectioninterval.Whenyoudisableacollectioninterval,allsubsequentintervalsare
automaticallydisabled.Forexample,whenyoudisabletheWeekinterval,theMonth
andYearintervalsarealsodisabled.Dataispurgedat
theendoftheDayintervalcycle
sincenorollupscanoccur.Oldestdataispurgedfirst.
Bydefault,statisticsarestoredintheVirtualCenterdatabasefor1year;however,you
canincreasethisto3years.VMwaresuggestsyouarchiveyourstatisticaldataoutside
oftheVirtualCenterdatabasetosave
itforlongerthan3years.
N
OTEYoumustmanuallyenableeachcollectionintervaltouseitagain;subsequent
collectionintervalsarenotenabledautomatically.Also,youcanonlyenableacollection
intervalifallpreviouscollectionintervalsareenabled.Forexample,toenablethe
Monthinterval,theDayandWeekintervalsmustbeenabled.