Specifications

Basic System Administration
282 VMware, Inc.
About Collection Intervals and Collection Levels
Bydefault,VirtualCenterhasfourcollectionintervals:Day,Week,Month,andYear.
Eachintervalspecifiesalengthofatimeduringwhichstatisticsarecollectedatacertain
frequency.Forexample,theDayintervalsetsstatisticstobecollectedevery5minutes
duringa1dayperiod,asshown
inFigure 18‐1,“Example:DailyStatisticsCollection,”
onpage 282.
Figure 18-1. Example: Daily Statistics Collection
Table 18‐1belowliststhedefaultintervaldurationandcollectionfrequencyvaluefor
eachinterval.
Eachcollectionintervalalsohasadefaultcollectionlevelthatdetermineshowmany
countersareusedwhencollectingstatisticsdata.Countersestablishwhichmetricsare
retrieved
andrecordedinthedatabase.Youcanassignacollectionlevelof1‐4toeach
Table 18-1. Interval Duration and Collection Frequency: Defaults
Collection
Interval
Interval
Duration
Collection
Frequency Configurable Attributes — Possible Values
Day 1Day 5Minutes IntervalLength(Days)—1‐3
CollectionFrequency(Minutes)—1,2,3,5
Week 1Week 30Minutes None
Month 1Month 2Hours None
Year 1Year 1Days IntervalLength(Years)—1‐3