Lenovo ThinkServer TS140 70A0 User Manual

Note:Themostup-to-datedevicedriversforvariousservermodelsarealwaysavailablefordownloadon
theLenovoSupportWebsiteat:
http://www.lenovo.com/drivers
Fordetailedinformation,refertothehelpinformationsystemfortheThinkServerEasyStartupprogram.
ConfiguringRAID
ThistopicprovidesinformationabouthowtoconfigureRedundantArrayofIndependentDisks(RAID)for
yourserver.
Note:TheinformationaboutconfiguringRAIDinthistopicisapplicableonlyinaWindowsenvironment.For
informationaboutconfiguringRAIDinaLinuxenvironment,contactyourLinuxsoftwareprovider.
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:
•RAID0:block-levelstripingwithoutparityormirroring
SimplestripesetsarenormallyreferredtoasRAID0.RAID0usesstripingtoprovidehighdata
throughput,especiallyforlargefilesinanenvironmentthatdoesnotrequirefaulttolerance.RAID0hasno
redundancyanditprovidesimprovedperformanceandadditionalstoragewithoutfaulttolerance.Any
drivefailuredestroysthearrayandthelikelihoodoffailureincreaseswithmoredrivesinthearray.RAID
0doesnotimplementerrorchecking,soanyerrorisuncorrectable.Moredrivesinthearraymeans
higherbandwidth,butgreaterriskofdataloss.
RAID0requiresaminimumnumberoftwoharddiskdrives.
•RAID1:mirroringwithoutparityorstriping
RAID1usesmirroringsothatdatawrittentoonedriveissimultaneouslywrittentoanotherdrive.Thisis
goodforsmalldatabasesorotherapplicationsthatrequiresmallcapacitybutcompletedataredundancy.
RAID1providesfaulttolerancefromdiskerrorsorfailuresandcontinuestooperateaslongasatleast
onedriveinthemirroredsetisfunctioning.Withappropriateoperatingsystemsupport,therecanbe
increasedreadperformanceandonlyaminimalwriteperformancereduction.
RAID1requiresaminimumnumberoftwoharddiskdrives.
34ThinkServerTS140HardwareMaintenanceManual

Lenovo ThinkServer TS140 70A0 Specifications

General

Memory Slots	4 DIMM slots
Form Factor	Tower
Chipset	Intel C226
Processor	Intel Xeon E3-1200 v3 series
Memory	Up to 32GB DDR3
Storage	Up to 4 x 3.5" or 2.5" HDD/SSD
RAID Support	RAID 0, 1, 10, 5
Network	Gigabit Ethernet
Network Controller	Intel I217LM
Expansion Slots	1 x PCIe 3.0 x16, 1 x PCIe 2.0 x1, 1 x PCI
Power Supply	280W or 450W
Operating System Support	Windows Server, Red Hat, SUSE, VMware