Lenovo ThinkServer TS460 - Configuring Raid; About Raid

TheThinkServerEasyStartupprogrammaininterfaceprovidesthefollowingmenusontheleftpaneof
thescreen.
MenuitemDescription
Home
Providegeneralinformationabouttheprogram.
Compatibilitynotes
Provideinformationabouttheoperatingsystemsandserver
configurationssupportedbytheversionoftheprogramyouareusing.
UserGuide
Provideinformationaboutthefeaturesoftheprogramandinstructions
onhowtousetheprogram.
Hardwarelist
Displayalistofhardwaredevicesdetectedbytheprogram.
ConfigureRAID
InstructyoutoconfigureRAIDorviewthecurrentRAIDconfiguration
andmakechangesifneeded.
Installoperatingsystem
Displayaseriesofchoicesandpromptstocollectinformation
requiredforoperatingsysteminstallation,preparetheharddiskdrive
forinstallation,andtheninitiatetheinstallationprocessusingyour
operatingsysteminstallationdisc.
Driverdownload
Providethesupporteddevicedriversfordownload.
About
Providetheversioninformationandlegalnotices.
ConfiguringRAID
ThistopicprovidesinformationaboutRAIDandtheutilityprogramsthatareavailableforyoutoconfigure
RAID.
Thistopiccontainsthefollowingitems:
•“AboutRAID”onpage47
•“RAIDforyourserver”onpage49
•“ConfiguringonboardSATAsoftwareRAID”onpage50
•“ConfiguringadvancedSATAorSAShardwareRAID”onpage52
AboutRAID
RAID,anacronymforRedundantArrayofIndependentDisks,isatechnologythatprovidesincreased
storagefunctionsandreliabilitythroughredundancy.ThisisachievedbycombiningmultipleHDDsintoa
logicalunit,wheredataisdistributedacrossthedrivesinoneofseveralwayscalledRAIDlevels.
WhenagroupofindependentphysicalHDDsaresetuptouseRAIDtechnology,theyareinaRAIDarray.
ThisarraydistributesdataacrossmultipleHDDs,butthearrayappearstothehostserverasonesingle
storageunit.CreatingandusingRAIDarraysprovideshighperformance,suchastheexpeditedI/O
performance,becauseseveraldrivescanbeaccessedsimultaneously.
RAIDdrivegroupsalsoimprovedatastoragereliabilityandfaulttolerancecomparedwithsingle-drive
storagesystems.Datalossresultingfromadrivefailurecanbepreventedbyreconstructingmissingdata
fromtheremainingdrives.
ThefollowinglistdescribessomeofthemostcommonlyusedRAIDlevels:
Chapter4.Configuringtheserver47