Lenovo ThinkServer TS440 70AL - Configuring Raid; About Raid

•ViewageneralintroductiontoyourThinkServerservermodelandthespecificserverconfiguration
information.
•ViewgeneralguidanceonhowtousetheThinkServerEasyStartupDVD.
•Downloadtherequireddevicedriverstoaremovablestoragedevicesothatyoucaneasilygetthe
driversforserverconfigurationwhenyouneedthem,especiallywhenyoufinishinstallinganoperating
systemwithoutusingtheThinkServerEasyStartupDVDandneedappropriatedevicedriverstoconfigure
yourserver.
•InstalltherequireddevicedriversdirectlyontheserveronwhichyouarerunningtheThinkServer
EasyStartupDVD.
•ViewinformationaboutallservermodelssupportedbytheThinkServerEasyStartupprogramand
informationaboutthedevicedriversforeachservermodel,includingthedriverversionsanddriver
locationsintherootdirectoryoftheThinkServerEasyStartupDVD.
Note:Themostup-to-datedevicedriversforvariousservermodelsarealwaysavailablefordownloadon
theLenovoSupportWebsiteat:
http://www.lenovo.com/drivers
ConfiguringRAID
ThistopicprovidesinformationaboutRAIDandtheutilityprogramsthatareavailableforyoutoconfigure
RAID.
Thistopiccontainsthefollowingitems:
•“AboutRAID”onpage57
•“RAIDforyourserver”onpage58
•“ConfiguringthesystemBIOStoenableonboardSATARAIDfunctionality”onpage59
•“ConfiguringtheadvancedSATAorSAShardwareRAID”onpage61
AboutRAID
RAID,anacronymforRedundantArrayofIndependentDisks,isatechnologythatprovidesincreased
storagefunctionsandreliabilitythroughredundancy.Thisisachievedbycombiningmultipleharddiskdrives
intoalogicalunit,wheredataisdistributedacrossthedrivesinoneofseveralwayscalledRAIDlevels.
WhenagroupofindependentphysicalharddiskdrivesaresetuptouseRAIDtechnology,theyareina
RAIDarray.Thisarraydistributesdataacrossmultipleharddiskdrives,butthearrayappearstothehost
serverasonesinglestorageunit.CreatingandusingRAIDarraysprovideshighperformance,suchasthe
expeditedI/Operformance,becauseseveraldrivescanbeaccessedsimultaneously.
RAIDdrivegroupsalsoimprovedatastoragereliabilityandfaulttolerancecomparedtosingle-drivestorage
systems.Datalossresultingfromadrivefailurecanbepreventedbyreconstructingmissingdatafromthe
remainingdrives.
ThefollowinglistdescribessomeofthemostcommonlyusedRAIDlevels:
Chapter5.Configuringtheserver57