Lenovo ThinkServer RD430 - Page 90

•Ifyouwanttosetahot-sparedriverightaftertheconfiguration,selectObjects➙PhysicalDrive
fromtheprogrammaininterface.Then,selecttheharddiskdrivethatyouwanttosetasahot-spare
driveandpressEnter.Asubmenuisdisplayed.SelectMakeHotSparefromthesubmenuandthen
selectYeswhenpromptedtosettheharddiskdriveasahot-sparedrive.
Rebuildingaphysicaldrive
ThistopicprovidesinstructionsonhowtorebuildaphysicaldriveusingtheLSISoftwareRAIDConfiguration
UtilityprogramwhenaphysicaldriveinaRAIDarrayfails.
WhenaphysicaldriveinaRAIDarrayfails,youcanrebuildthedrivebyrecreatingthedatathatwasstored
onthedrivebeforeitfails.Ifthedriveisnotoperational,itmustbereplacedandthedataonthefailingdrive
mustberebuiltonanewdrivetorestorethesystemtofaulttolerance.
TheRAIDcontrollerrecreatesthedatausingthedatastoredonotherdrivesinthedrivegroup.Rebuilding
canbedoneonlyindrivegroupswithdataredundancy,suchasRAID1,RAID5,andRAID10arrays.For
detailedinformationaboutdiskrebuild,referto“IntroductiontoRAID”intheMegaRAIDSASSoftwareUser
GuideonthedocumentationDVDthatcomeswithyourserver.
TorebuildaphysicaldriveusingtheLSISoftwareRAIDConfigurationUtilityprogramwhenaphysicaldrive
inaRAIDarrayfails,dothefollowing:
1.StarttheLSISoftwareRAIDConfigurationUtilityprogram.See“StartingtheLSISoftwareRAID
ConfigurationUtilityprogram”onpage73.
2.Onthemaininterfaceoftheprogram,selectRebuildandfollowtheinstructionsonthescreen.
Note:Runaconsistencycheckimmediatelyaftertherebuildcompletestoensuredataintegrityforthevirtual
drives.See“Runningaconsistencycheck”onpage76
.
Therebuildrateisthepercentageofthecomputingcyclesdedicatedtorebuildingfailingdrives.Therebuild
ratecanbeconfiguredbetween0percentand100percent.At0percent,therebuildisdoneonlyifthesystem
isnotdoinganythingelse.At100percent,therebuildhasahigherprioritythananyothersystemactivity.
ToconfiguretherebuildrateusingtheLSISoftwareRAIDConfigurationUtilityprogram,dothefollowing:
Note:Usingarebuildrateof0or100percentisnotrecommended.Thedefaultvalueis30percent.
1.StarttheLSISoftwareRAIDConfigurationUtilityprogram.See“StartingtheLSISoftwareRAID
ConfigurationUtilityprogram”onpage73
.
2.Onthemaininterfaceoftheprogram,selectObjects➙Adapter➙RebuildRate.
3.Settherebuildratebytypingadesiredvaluefromthekeyboarddirectly.
Runningaconsistencycheck
ThistopicprovidesinstructionsonhowtorunaconsistencycheckforvirtualdrivesusingtheLSISoftware
RAIDConfigurationUtilityprogram.
TheconsistencycheckoperationverifiesthatallstripesonavirtualdrivewitharedundantRAIDlevel(RAID
1,RAID5,andRAID10)areconsistentandthedateonthevirtualdriveiscorrect.Forexample,inasystem
withparity,checkingconsistencymeanscomputingthedataononedriveandcomparingtheresultsto
thecontentsoftheparitydrive.
Youshouldrunaconsistencycheckonfault-tolerantvirtualdrivesperiodically.Itisrecommendedthatyou
runaconsistencycheckatleastonceamonth.Youmustrunaconsistencycheckifyoususpectthatthe
virtualdrivedatamightbecorrupted.Ensurethatyoubackupthedatabeforerunningaconsistencycheck
ifyoususpectthatthedatamightbecorrupted.
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