Lenovo ThinkServer RD440 User Manual Page 87
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•“ConfiguringRAIDusingtheThinkServerEasyStartupprogram”onpage76
•“ConfiguringtheThinkServerRAID300”onpage76
•“ConfiguringtheadvancedSATA/SAShardwareRAID”onpage82
AboutRAID
RAID,anacronymforRedundantArrayofIndependentDisks,isatechnologythatprovidesincreased
storagefunctionsandreliabilitythroughredundancy.Thisisachievedbycombiningmultipleharddiskdrives
intoalogicalunit,wheredataisdistributedacrossthedrivesinoneofseveralwayscalledRAIDlevels.
WhenagroupofindependentphysicalharddiskdrivesaresetuptouseRAIDtechnology,theyareinaRAID
array.Thisarraydistributesdataacrossmultipleharddiskdrives,butthearrayappearstothehostserveras
onesinglestorageunit,knownasavirtualdrive.CreatingandusingRAIDarraysprovideshighperformance,
suchastheexpeditedI/Operformance,becauseseveraldrivescanbeaccessedsimultaneously.
RAIDdrivegroupsalsoimprovedatastoragereliabilityandfaulttolerancecomparedwithsingle-drive
storagesystems.Datalossresultingfromadrivefailurecanbepreventedbyreconstructingmissingdata
fromtheremainingdrives.
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.
•RAID5:block-levelstripingwithdistributedparity
RAID5usesdiskstripingandparitydataacrossalldrives(distributedparity)toprovidehighdata
throughput,especiallyforsmallrandomaccess.RAID5distributesparityalongwiththedataandrequires
alldrivesbutonetobepresenttooperate;drivefailurerequiresreplacement,butthearrayisnot
destroyedbyasingledrivefailure.Upondrivefailure,anysubsequentreadoperationscanbecalculated
fromthedistributedparitysothatthedrivefailureismaskedfromtheenduser.Thearraywillhavedata
lossintheeventofaseconddrivefailureandisvulnerableuntilthedatathatwasonthefailingdriveis
rebuiltontoareplacementdrive.Asingledrivefailureinthesetwillresultinreducedperformanceof
theentiresetuntilthefailingdrivehasbeenreplacedandrebuilt.
RAID5requiresaminimumnumberofthreeharddiskdrives.
Chapter5.Configuringtheserver75
- ThinkServerRD440 1
- •“Safetyinformation”onpageiii 2
- •AppendixA“Notices”onpage213 2
- Contents 3
- Safetyinformation 5
- ©CopyrightLenovo2013,2014 11
- Productsthatarenotassessed 12
- Chapter1.Generalinformation 13
- Serverdocumentation 14
- Chapter1.Generalinformation3 15
- Supplementarydocuments 16
- Chapter2.Serversetuproadmap 17
- Chapter3.Productoverview 19
- Features 20
- Chapter3.Productoverview9 21
- Chapter3.Productoverview11 23
- Specifications 24
- Software 24
- ThinkServerEasyStartup 24
- Chapter3.Productoverview13 25
- Diagnosticprograms 26
- Locations 26
- Chapter3.Productoverview15 27
- Frontviewoftheserver 28
- 5IDbuttonwithIDLED 32
- 6NIC1statusLED 32
- 7NIC2statusLED 32
- 8SystemerrorLED 32
- Frontpanel 34
- 2IDbuttonwithIDLED 35
- 3NIC1statusLED 35
- 4NIC2statusLED 35
- Chapter3.Productoverview23 35
- Diagnosticmodule 36
- IntelligentDiagnosticsModule 37
- 1SystemfanerrorLEDs 39
- 4indicatesadummysystemfan 39
- Chapter3.Productoverview27 39
- 2CPU1DIMMstatusLEDs 40
- 3CPU2DIMMstatusLEDs 40
- 4AmbienttemperaturelimitLED 40
- Rearviewoftheserver 41
- Servercomponents 46
- .Productoverview35 47
- CRUidentification 49
- .Productoverview39 51
- RAIDcard 52
- Ports7-4 53
- Ports3-0 53
- Expandercard 54
- Figure28.Expandercard 55
- Connector14Connector4 55
- Connector25Connector5 55
- Connector36Connector6 55
- Connectingthecables 59
- Chapter3.Productoverview49 61
- 4ononeendofthe 62
- Chapter3.Productoverview51 63
- Systemboardcomponents 64
- Systemboardjumpersandswitches 67
- Systemboardswitches 68
- Chapter3.Productoverview57 69
- Figure41.Systemboardswitches 70
- Clearpasswordswitch 70
- Reservedforthemanufacturer 70
- SystemboardLEDs 71
- 2-6SystemfanerrorLEDs 72
- Turningontheserver 73
- Turningofftheserver 73
- Chapter5.Configuringtheserver 75
- SetupUtilityprograminterface 76
- Securitymenu 77
- ServerManagementmenu 77
- Settingthesystemdateandtime 78
- Usingpasswords 79
- Selectingastartupdevice 80
- ConfiguringtheTPMfunction 80
- ExitingtheSetupUtilityprogram 81
- UpdatingorrecoveringtheBIOS 82
- ConfiguringRAID 86
- AboutRAID 87
- RAIDarraystatus 89
- Initializingavirtualdrive 91
- Settingahot-sparedrive 92
- Rebuildingaphysicaldrive 92
- Runningaconsistencycheck 93
- Updatingthefirmware 95
- Guidelines 97
- Precautions 97
- Systemreliabilityguidelines 99
- Removingtheservercover 99
- 1inthedirectionasshown 100
- PSU 1 2 102
- 1inthechassis 105
- 2inthechassis.Ensure 105
- 3inthechassis.Then 105
- Figure55.Removingtheleftcage 110
- Memorymoduleinstallationrules 111
- Installingamemorymodule 114
- 1onthenewmemory 115
- Removingamemorymodule 116
- InstallingtheRAIDcard 117
- RemovingtheRAIDcard 119
- AdvancedRAID 120
- InstallingtheTR500Key 121
- RemovingtheTR500Key 122
- Figure68.RemovingtheTR500Key 123
- InstallingtheTR700Battery 124
- RemovingtheTR700Battery 125
- Installingtheexpandercard 127
- Removingtheexpandercard 129
- InstallinganEthernetcard 130
- RemovinganEthernetcard 133
- RemovingtheTR300Key 136
- Figure80.RemovingtheTR300Key 138
- InstallingtheTMMPremium 139
- RemovingtheTMMPremium 140
- InstallingtheTPM 142
- RemovingtheTPM 143
- Figure84.RemovingtheTPM 145
- 1inthedirectionas 148
- Figure92.Donottouchthepins 154
- Replacingthemicroprocessor 155
- Figure97.Donottouchthepins 157
- 4ofthemicroprocessorsocket 158
- Installinganexternaltapedrive 171
- 1ontherearoftheexternal 172
- 1ontheexternaltapedrive 172
- 1slightly 176
- 2.Then,presstheothersideof 177
- 1onthechassisarealigned 183
- 2onthechassis 184
- Replacingthefrontpanelboard 192
- Replacingthediagnosticmodule 196
- Replacingasystemfan 199
- Replacingthecoin-cellbattery 201
- Replacingthesystemboard 203
- Completingthepartsreplacement 211
- 4fortheopticaldrivetothe 212
- Updatingtheserverconfiguration 214
- Troubleshootingprocedure 215
- Usingadiagnosticprogram 216
- Viewingthesystemeventlog 216
- Basictroubleshootingtables 216
- Opticaldriveproblems 217
- Hard-disk-driveproblems 218
- Memorymoduleproblems 219
- Informationresources 221
- Usingthedocumentation 221
- ThinkServerWebsite 221
- LenovoSupportWebsite 221
- Helpandservice 222
- Beforeyoucall 222
- Callingforservice 222
- Usingotherservices 223
- Purchasingadditionalservices 223
- AppendixA.Notices 225
- Trademarks 226
- Importantnotes 226
- Recyclinginformation 226
- Batteryreturnprogram 227
- Particulatecontamination 228
- ImportantWEEEinformation 228
- EuropeanUnionRoHS 229
- Exportclassificationnotice 229
- Electronicemissionnotices 229
- Eurasiancompliancemark 231
- ENERGYSTARmodelinformation 231
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