Lenovo ThinkServer 1045 - SAS RAID Settings; Creating or Deleting the RAID 1 Array

Table29.ItemsintheAdapterPropertieswindowforSAS1068E(continued)
ItemDescription
BootSupport
Deningthesoftwarecontrolmodeoftheadapter.
EnabledBIOS&OS:Whenthisoptionisenabled,it
meansthattheadapteriscontrolledbyboththeBIOS
andthedriverontheoperatingsystem.
EnabledBIOSOnly:Whenthisoptionisenabled,it
meansthattheadapteriscontrolledbyonlytheBIOS,
insteadofthedriverontheoperatingsystem.This
optionmightnotbesupportedbyalltheoperating
systems,suchasWindowsoperatingsystems.
EnabledOSOnly:Whenthisoptionisenabled,it
meansthattheadapteriscontrolledbyonlythe
operatingsystem.
Disabled:Whenthisoptionisenabled,theadapter
isdisabled.
RAIDProperties
SettheHostRAID.See“SASRAIDsettings”onpage86.
SASTopologySettheSASharddiskdrives.See“AccessingtheSAS
Topologywindow”onpage87.
AdvancedAdapterProperties
Settheadvancedpropertiesoftheadapter
Note:Tomakeanyofthesettingstakeeffect,youneedtorestarttheserver.
SASRAIDsettings
IntheAdapterPropertieswindow,selectRAIDPropertiesandpressEnter.ThemainwindowforSAS
RAIDsetupisdisplayed.
ThefollowinglistdescribestheitemsinthemainwindowforSASRAIDsetup:
•CreateIMVolume:CreatingRAID1oftwoharddiskdrives.
RAID1usesmirroringsothatdatawrittentoonedriveissimultaneouslywrittentoanotherdrive.Thisis
goodforsmalldatabasesorotherapplicationsthatrequiresmallcapacitybutcompletedataredundancy
ifonedrivefails.Thedatacanbereadfromthetwoharddiskdrivesatthesametimetoimprovethe
speedofreadingtheharddiskdrives.RAID1onlysupportsevennumbersofharddiskdrives.
•CreateIMEVolume:CreatingRAID1Eofatleastthreeharddiskdrives.
RAID1Estoresdataonallharddiskdrivesthroughstripedmirroring.RAID1Esupportsoddnumbersof
harddiskdrivestoformanarray,whileatleastthreeharddiskdrivesarerequired.
•CreateISVolume:CreatingRAID0oftwotoeightharddiskdrives.
RAID0usesstripingtoprovidehighdatathroughput,especiallyforlargelesinanenvironmentthatdoes
notrequirefaulttolerance.RAID0breaksupdataintosmallersegments.Itcanimprovereadandwrite
speed.However,sincethereisnodataredundancyfeature,alldatawillbelostifanydrivefails.
CreatingordeletingtheRAID1array
ThissectionusesRAID1asanexampletoguideyoutocreateordeleteSASRAIDusingtheLSI
CongurationUtilityprogram.
CreatingtheRAID1array
ThissectionprovidesinstructionsonhowtocreateRAID1usingtheLSICongurationUtilityprogram.
TocreateRAID1,dothefollowing:
86ThinkServerInstallationandUserGuide