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WhenagroupofindependentphysicalharddiskdrivesaresetuptouseRAIDtechnology,theyareinaRAID
array.Thisarraydistributesdataacrossmultipleharddiskdrives,butthearrayappearstothehostserveras
onesinglestorageunit,knownasavirtualdrive.CreatingandusingRAIDarraysprovideshighperformance,
suchastheexpeditedI/Operformance,becauseseveraldrivescanbeaccessedsimultaneously.
RAIDdrivegroupsalsoimprovedatastoragereliabilityandfaulttolerancecomparedwithsingle-drive
storagesystems.Datalossresultingfromadrivefailurecanbepreventedbyreconstructingmissingdata
fromtheremainingdrives.
ThefollowinglistdescribessomeofthemostcommonlyusedRAIDlevels:
•RAID0:block-levelstripingwithoutparityormirroring
SimplestripesetsarenormallyreferredtoasRAID0.RAID0usesstripingtoprovidehighdata
throughput,especiallyforlargelesinanenvironmentthatdoesnotrequirefaulttolerance.RAID0hasno
redundancyanditprovidesimprovedperformanceandadditionalstoragewithoutfaulttolerance.Any
drivefailuredestroysthearrayandthelikelihoodoffailureincreaseswithmoredrivesinthearray.RAID
0doesnotimplementerrorchecking,soanyerrorisuncorrectable.Moredrivesinthearraymeans
higherbandwidth,butgreaterriskofdataloss.
RAID0requiresaminimumnumberoftwoharddiskdrives.
•RAID1:mirroringwithoutparityorstriping
RAID1usesmirroringsothatdatawrittentoonedriveissimultaneouslywrittentoanotherdrive.Thisis
goodforsmalldatabasesorotherapplicationsthatrequiresmallcapacitybutcompletedataredundancy.
RAID1providesfaulttolerancefromdiskerrorsorfailuresandcontinuestooperateaslongasatleast
onedriveinthemirroredsetisfunctioning.Withappropriateoperatingsystemsupport,therecanbe
increasedreadperformanceandonlyaminimalwriteperformancereduction.
RAID1requiresaminimumnumberoftwoharddiskdrives.
•RAID5:block-levelstripingwithdistributedparity
RAID5usesdiskstripingandparitydataacrossalldrives(distributedparity)toprovidehighdata
throughput,especiallyforsmallrandomaccess.RAID5distributesparityalongwiththedataandrequires
alldrivesbutonetobepresenttooperate;drivefailurerequiresreplacement,butthearrayisnot
destroyedbyasingledrivefailure.Upondrivefailure,anysubsequentreadoperationscanbecalculated
fromthedistributedparitysothatthedrivefailureismaskedfromtheenduser.Thearraywillhavedata
lossintheeventofaseconddrivefailureandisvulnerableuntilthedatathatwasonthefailingdriveis
rebuiltontoareplacementdrive.Asingledrivefailureinthesetwillresultinreducedperformanceof
theentiresetuntilthefailingdrivehasbeenreplacedandrebuilt.
RAID5requiresaminimumnumberofthreeharddiskdrives.
•RAID10:acombinationofRAID0andRAID1
RAID10consistsofstripeddataacrossmirroredspans.ARAID10drivegroupisaspanneddrive
groupthatcreatesastripedsetfromaseriesofmirroreddrives.RAID10allowsamaximumofeight
spans.YoumustuseanevennumberofdrivesineachRAIDvirtualdriveinthespan.TheRAID1
virtualdrivesmusthavethesamestripesize.RAID10provideshighdatathroughputandcompletedata
redundancybutusesalargernumberofspans.
RAID10requiresaminimumnumberoffourharddiskdrivesandalsorequiresanevennumberofdrives,
forexample,sixharddiskdrivesoreightharddiskdrives.
Chapter5.Conguringtheserver71
- ThinkServerRD430 1
- UserGuide 1
- •“Safetyinformation”onpageiii 2
- •AppendixA“Notices”onpage189 2
- Contents 3
- Safetyinformation 5
- ThinkServerRD430UserGuide 10
- ©CopyrightLenovo2012,2013 11
- Chapter1.Generalinformation 13
- Serverdocumentation 14
- Chapter1.Generalinformation3 15
- Chapter2.Serversetuproadmap 17
- 6ThinkServerRD430UserGuide 18
- Chapter3.Productoverview 19
- Features 20
- Chapter3.Productoverview9 21
- Specications 23
- Diagnosticprograms 25
- Locations 25
- Frontviewoftheserver 27
- Chapter3.Productoverview19 31
- 5IDbuttonwithIDLED 31
- 6NIC1statusLED 31
- 7NIC2statusLED 31
- 8SystemerrorLED 31
- Frontpanel 33
- 2IDbuttonwithIDLED 34
- 3NIC1statusLED 34
- 4NIC2statusLED 34
- Diagnosticmodule 35
- 1Powersupplyerror 36
- 2Ambienttemperature 36
- 3SystemfanerrorLED 36
- .Productoverview25 37
- 1SystemfanerrorLEDs 38
- 2CPU1DIMMstatusLEDs 39
- 3CPU2DIMMstatusLEDs 39
- 4AmbienttemperaturelimitLED 39
- Chapter3.Productoverview27 39
- Rearviewoftheserver 40
- 30ThinkServerRD430UserGuide 42
- Servercomponents 44
- .Productoverview33 45
- 34ThinkServerRD430UserGuide 46
- .Productoverview35 47
- 36ThinkServerRD430UserGuide 48
- RAIDcard 49
- Expandercard 50
- Figure27.Expandercard 51
- Connector14Connector4 51
- Connector25Connector5 51
- Connector36Connector6 51
- 8-pinpowerconnector 55
- Mini-SASports0-3 55
- Chapter3.Productoverview45 57
- 4ononeendofthe 58
- Chapter3.Productoverview47 59
- Systemboardcomponents 60
- Systemboardjumpersandswitches 63
- Systemboardswitches 64
- Chapter3.Productoverview53 65
- Figure40.Systemboardswitches 66
- Clearpasswordswitch 66
- Reservedforthemanufacturer 66
- SystemboardLEDs 67
- 2-5SystemfanerrorLEDs 68
- Turningontheserver 69
- Turningofftheserver 69
- Chapter5.Conguringtheserver 71
- SetupUtilityprograminterface 72
- Securitymenu 73
- ServerManagementmenu 73
- Settingthesystemdateandtime 74
- Usingpasswords 75
- Selectingastartupdevice 76
- ConguringtheTPMfunction 76
- ExitingtheSetupUtilityprogram 77
- UpdatingorrecoveringtheBIOS 77
- Updating(ashing)theBIOS 78
- ConguringRAID 82
- AboutRAID 82
- RAIDarraystatus 85
- Initializingavirtualdrive 87
- Settingahot-sparedrive 88
- Rebuildingaphysicaldrive 88
- Runningaconsistencycheck 89
- Updatingthermware 91
- 80ThinkServerRD430UserGuide 92
- Guidelines 93
- Precautions 93
- Systemreliabilityguidelines 95
- Removingtheservercover 95
- 1inthedirectionasshown 96
- 1inthechassis 101
- 2inthechassis.Ensure 101
- 3inthechassis.Then 101
- 94ThinkServerRD430UserGuide 106
- Memorymoduleinstallationrules 107
- Installingamemorymodule 110
- Removingamemorymodule 112
- InstallingtheRAIDcard 113
- RemovingtheRAIDcard 115
- Figure65.RemovingtheRAIDcard 116
- AdvancedRAID 117
- RemovingtheTR500Key 118
- Figure67.RemovingtheTR500Key 119
- InstallingtheTR700Battery 120
- RemovingtheTR700Battery 121
- Installingtheexpandercard 123
- Removingtheexpandercard 125
- InstallinganEthernetcard 126
- RemovinganEthernetcard 129
- RemovingtheTR300Key 132
- Figure79.RemovingtheTR300Key 134
- InstallingtheTMMPremium 135
- RemovingtheTMMPremium 136
- InstallingtheTPM 138
- RemovingtheTPM 139
- Figure83.RemovingtheTPM 141
- 1inthedirectionas 144
- Figure91.Donottouchthepins 150
- Replacingthemicroprocessor 151
- Figure96.Donottouchthepins 153
- 4ofthemicroprocessorsocket 154
- 146ThinkServerRD430UserGuide 158
- 150ThinkServerRD430UserGuide 162
- 1onthechassisarealigned 166
- 2onthechassis 166
- Replacingthefrontpanelboard 175
- Replacingthediagnosticmodule 179
- Replacingasystemfan 182
- Completingthepartsreplacement 186
- 4fortheopticaldrivetothe 187
- Updatingtheserverconguration 189
- 178ThinkServerRD430UserGuide 190
- Troubleshootingprocedure 191
- Usingadiagnosticprogram 192
- Viewingthesystemeventlog 192
- Basictroubleshootingtables 192
- Opticaldriveproblems 193
- Harddiskdriveproblems 194
- Memorymoduleproblems 195
- 184ThinkServerRD430UserGuide 196
- Informationresources 197
- Usingthedocumentation 197
- ThinkServerWebsite 197
- LenovoSupportWebsite 197
- Helpandservice 198
- Beforeyoucall 198
- Callingforservice 198
- Usingotherservices 199
- Purchasingadditionalservices 199
- 188ThinkServerRD430UserGuide 200
- AppendixA.Notices 201
- Trademarks 202
- Importantnotes 202
- Recyclinginformation 202
- Batteryreturnprogram 203
- Particulatecontamination 204
- ImportantWEEEinformation 204
- Exportclassicationnotice 205
- Electronicemissionnotices 205
- ENERGYSTARmodelinformation 207
- •Lowpowermemorystates 208
- •Liquidcoolingcapability 208
- 196ThinkServerRD430UserGuide 208
- 198ThinkServerRD430UserGuide 210
- 200ThinkServerRD430UserGuide 212
- 202ThinkServerRD430UserGuide 214
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