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Valorado. / 5. Basado en revisión del cliente
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.
•RAID6:block-levelstripingwithdistributedparity
RAID6usesdistributedparity,withtwoindependentparityblocksperstripe,anddiskstriping.ARAID6
virtualdrivecansurvivethelossofanytwodriveswithoutlosingdata.ARAID6drivegroupissimilar
toaRAID5drivegroup.Blocksofdataandparityinformationarewrittenacrossalldrives.Theparity
informationisusedtorecoverthedataifoneortwodrivesfailinthedrivegroup.
RAID6requiresaminimumnumberofthreeharddiskdrives.
•RAID10:acombinationofRAID0andRAID1
RAID10consistsofstripeddataacrossmirroredspans.ARAID10drivegroupisaspanneddrive
groupthatcreatesastripedsetfromaseriesofmirroreddrives.RAID10allowsamaximumofeight
spans.YoumustuseanevennumberofdrivesineachRAIDvirtualdriveinthespan.TheRAID1
virtualdrivesmusthavethesamestripesize.RAID10provideshighdatathroughputandcompletedata
redundancybutusesalargernumberofspans.
RAID10requiresaminimumnumberoffourharddiskdrivesandalsorequiresanevennumberofdrives,
forexample,sixharddiskdrivesoreightharddiskdrives.
Chapter5.Configuringtheserver57
- ThinkServerRD550 1
- •“Safetyinformation”onpageiii 2
- •AppendixA“Notices”onpage157 2
- Contents 3
- Safetyinformation 5
- ©CopyrightLenovo2014 11
- Productsthatarenotassessed 12
- Safetyinspectionguide 12
- Groundingrequirements 13
- Chapter1.Generalinformation 15
- Serverdocumentation 16
- Chapter1.Generalinformation3 17
- Chapter2.Serversetuproadmap 19
- Chapter3.Productoverview 21
- Chapter3.Productoverview9 23
- Chapter3.Productoverview11 25
- Specifications 26
- Software 27
- BIOSandTSMupdateutilities 27
- Management 28
- LenovoThinkServerDiagnostics 29
- LenovoThinkServerPowerPlanner 29
- Locations 30
- Frontviewoftheserver 31
- Pull-outinformationcard 32
- Rackhandle(left) 32
- Frontpanel 32
- 2SystemhealthLED 34
- Rearviewoftheserver 35
- 9Fibercablereleasetool 38
- Servercomponents 39
- Chapter3.Productoverview29 43
- 1PCI-E0connector 44
- 2PCI-E1connector 44
- 3RAIDupgradekeyconnector 44
- 2PCI-E0connector 45
- 3PCI-E1connector 45
- Chapter3.Productoverview31 45
- 1SATAconnector 46
- 3PCI-E0connector 46
- 4PCI-E1connector 46
- 2SASconnector0-3 47
- 3SASconnector4-7 47
- Chapter3.Productoverview33 47
- Hot-swap-drivebackplane 48
- Backplanefor3.5-inchdrives 49
- 0-11:Slot0-slot11 50
- 12PCIesignalconnectors 50
- 1310-pinpowerconnector 50
- 14AnyRAIDadapterslot(2) 50
- Systemboardcomponents 51
- Rear-backplanepowerconnector 52
- Systemboardjumpers 55
- SystemfanfaultLEDs 57
- Hot-swap-drivestatusLEDs 58
- PowersupplystatusLEDs 59
- Connectingcables 59
- Turningontheserver 61
- Turningofftheserver 61
- Chapter5.Configuringtheserver 63
- SystemInformationmenu 64
- AdvancedSettingsmenu 64
- SystemSecuritymenu 65
- TSMSettingsmenu 65
- BootManagermenu 65
- Save&Exitmenu 65
- Settingthesystemdateandtime 66
- Usingpasswords 66
- Selectingastartupdevice 67
- ConfiguringtheTPMfunction 68
- ExitingtheSetupUtilityprogram 68
- UpdatingorrecoveringtheBIOS 68
- Updating(flashing)theBIOS 69
- ConfiguringRAID 70
- AboutRAID 70
- Updatingthefirmware 73
- Chapter6.Replacinghardware 75
- Systemreliabilityguidelines 76
- Removingtheservercover 77
- Chapter6.Replacinghardware65 79
- Removingthecoolingshroud 80
- Reinstallingthecoolingshroud 81
- Memorymoduleinstallationrules 82
- Chapter6.Replacinghardware69 83
- Installingamemorymodule 84
- Chapter6.Replacinghardware71 85
- Removingamemorymodule 86
- InstallingtheTSMPremium 87
- RemovingtheTSMPremium 88
- Chapter6.Replacinghardware75 89
- InstallingtheTPM 90
- RemovingtheTPM 91
- InstallingtheRAID110ikey 92
- RemovingtheRAID110ikey 93
- InstallingtheRAID510ikey 94
- RemovingtheRAID510ikey 95
- Installingtheflashmodule 96
- Removingtheflashmodule 97
- InstallingtheSDmodule 98
- RemovingtheSDmodule 99
- InstallingtheAnyFabricadapter 100
- Chapter6.Replacinghardware87 101
- RemovingtheAnyFabricadapter 102
- Chapter6.Replacinghardware89 103
- InstallingorremovingaPCIecard 105
- RemovingaPCIecard 107
- Figure62.RemovingthePCIecard 108
- Chapter6.Replacinghardware95 109
- Replacingtherearbackplane 111
- Chapter6.Replacinghardware99 113
- .Replacinghardware101 115
- Installingtheintrusionswitch 116
- Removingtheintrusionswitch 117
- Chapter6.Replacinghardware105 119
- Figure73.Removingtheheatsink 120
- Chapter6.Replacinghardware107 121
- Figure75.Openingthehandles 122
- Figure77.Donottouchthepins 123
- 4ofthemicroprocessorsocket 124
- Replacingthemicroprocessor 125
- Figure81.Openingthehandles 126
- Chapter6.Replacinghardware113 127
- Figure84.Donottouchthepins 128
- Chapter6.Replacinghardware115 129
- Chapter6.Replacinghardware117 131
- Chapter6.Replacinghardware119 133
- Chapter6.Replacinghardware121 135
- Chapter6.Replacinghardware123 137
- Chapter6.Replacinghardware125 139
- Chapter6.Replacinghardware127 141
- .Replacinghardware129 143
- 1totherearoftheopticaldrive 144
- 1onthechassispassthrough 145
- 2onthebackplane 145
- Chapter6.Replacinghardware131 145
- Replacingasystemfan 146
- Chapter6.Replacinghardware133 147
- Replacingthefrontpanelboard 148
- Replacingtherisercardassembly 149
- Replacingthecoin-cellbattery 151
- Chapter6.Replacinghardware139 153
- 1andtheliftinghandle2 155
- Chapter6.Replacinghardware141 155
- Chapter6.Replacinghardware143 157
- Completingthepartsreplacement 158
- Updatingtheserverconfiguration 159
- Troubleshootingprocedure 161
- Viewingthesystemeventlog 162
- Basictroubleshootingtables 162
- Opticaldriveproblems 162
- Storagedriveproblems 163
- Memorymoduleproblems 164
- Informationresources 167
- Usingthedocumentation 167
- ThinkServerWebsite 167
- LenovoSupportWebsite 167
- Helpandservice 168
- Beforeyoucall 168
- Callingforservice 168
- Usingotherservices 169
- Purchasingadditionalservices 169
- AppendixA.Notices 171
- Trademarks 172
- Importantnotes 172
- Recyclinginformation 172
- Batteryreturnprogram 173
- Particulatecontamination 174
- ImportantWEEEinformation 174
- EuropeanUnionRoHS 175
- Exportclassificationnotice 175
- Electronicemissionnotices 175
- Eurasiancompliancemark 177
- Brazilregulatorynotice 177
- RecyclinginformationforBrazil 177
- ENERGYSTARmodelinformation 178
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