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•RAID10:acombinationofRAID0andRAID1

RAID10consistsofstripeddataacrossmirroredspans.ARAID10drivegroupisaspanneddrive

groupthatcreatesastripedsetfromaseriesofmirroreddrives.RAID10allowsamaximumofeight

spans.YoumustuseanevennumberofdrivesineachRAIDvirtualdriveinthespan.TheRAID1

virtualdrivesmusthavethesamestripesize.RAID10provideshighdatathroughputandcompletedata

redundancybutusesalargernumberofspans.

RAID10requiresaminimumnumberoffourharddiskdrivesandalsorequiresanevennumberofdrives,

forexample,sixharddiskdrivesoreightharddiskdrives.

•RAID50:acombinationofRAID0andRAID5

RAID50usesdistributedparityanddiskstriping.ARAID50drivegroupisaspanneddrivegroupin

whichdataisstripedacrossmultipleRAID5drivegroups.RAID50worksbestwithdatathatrequires

highreliability,highrequestrates,highdatatransfers,andmedium-to-largecapacity.

Note:HavingvirtualdrivesofdifferentRAIDlevels,suchasRAID0andRAID5,inthesamedrivegroupis

notallowed.Forexample,ifanexistingRAID5virtualdriveiscreatedoutofpartialspaceinanarray,the

nextvirtualdriveinthearrayhastobeRAID5only.

RAID50requiresaminimumnumberofsixharddiskdrives.

FordetailedinformationaboutRAID,referto“IntroductiontoRAID”intheMegaRAIDSASSoftwareUser

GuideonthedocumentationDVDthatcomeswithyourserver.

RAIDforyourserver

ThistopicprovidesinformationabouttheRAIDsupportedbyyourserver.

YourserversupportsthefollowingtwotypesofRAIDcongurations:

•OnboardSATAsoftwareRAIDcongurationusingtheLSISoftwareRAIDCongurationUtility

program;andRAIDmanagementusingtheMegaRAIDStorageManagerprogram

TheonboardSATAsoftwareRAIDcontrollerisintegratedintheIntelC202chiponthesystemboard.Ifyour

serverhasSATAharddiskdrivesthatareconnectedtothesystemboard,youcanusetheLSISoftware

RAIDCongurationUtilityprogramtocongureRAID.YourserversupportsonboardSATAsoftwareRAID

levels0,1,and10.YoucanalsoactivateRAIDlevel5byinstallingaThinkServerSATASoftwareRAID5

activationkey.See“InstallingorremovingtheThinkServerSATASoftwareRAID5Key”onpage102

YoucaninstallandusetheMegaRAIDStorageManagerprogramtomanagetheRAIDarrayandRAID

controllerinanoperatingsystemenvironment.

Fordetailedinformation,see“ConguringtheonboardSATAsoftwareRAID”onpage75

Chapter5.Conguringtheserver73

Lenovo ThinkServer User Manual

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