Brocadesitelink

sitelink  时间:2021-05-24  阅读:()
SVCandSpectrumVirtualizeHyperswapSANDesignBestPracticesDavidGreenIBMSANCentralJordanFincherSpectrumVirtualizeLevel3supportAcceleratewithIBMStorageWebinarsTheFreeIBMStorageTechnicalWebinarSeriesContinuesin2020.
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WashingtonSystemsCenter–Storageexpertscoveravarietyoftechnicaltopics.
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Youcanaccessthis5-questionsurveyviaMenti.
comwithcode917440orDirectlinkhttps://www.
menti.
com/mkg7a2x6q8OrQRCodeWhatWeWillCoverBasicrequirementforSANTopologyforHyperSwapandStretchedClustersConceptualDesignDesignVariationsCiscoDesignConsiderationsBrocadeDesignConsiderationsSizingtheInter-sitelinksAnyrecommendationsmadeorSANdiagramspicturedinthissessionapplytoSVC,SpectrumVirtualizeandFlashSystemclustersinaHyperSwaporStretchedconfigurationunlessotherwisenoted.
TheRequirementStatedSimply:Path/SessionLinkAclusterconfiguredasaStretchedorHyperswapclustermusthaveadedicatedmeansofcommunicationbetweenthenodesintheclusterHyperswapSANDesignFailureDomain2PrivateSANFailureDomain1FailureDomain3QuorumPublicSANHyperswapSANDesignwithISLsPath/SessionLinkPrivatefabricsmustbecompletelyprivate–includingimplementingseparateISLsfrompublicfabricsPrivatefabricscanbevirtual(BrocadevirtualfabricsorCiscoVSANs)HyperswapwithVirtualSwitchesFailureDomain2PrivateSANFailureDomain1FailureDomain3QuorumPublicSANHyperswapSANDesignwithNoISLsBestPracticeForISLsISLsshouldalwaysbetrunkedWherepossibleusemultipleprovidersforinter-sitelinksIfmultipleprovidersareused,puteachpublic/privatefabricpaironaseparateproviderratherthanbothfabricsonbothprovidersPortMaskingandZoningConsiderationsAswithstandardtopologyclusters,portmaskingshouldbeimplementedProperlyconfigureddedicatedfabricsremovethezoningrequirementsforzoninginter-nodeportsawayfromhostsandstorageTheNPIVfeatureforhostsshouldstillbeimplementedPortMaskingandZoningConsiderationsCiscoandC-TypeFabricDesignConsiderationsTrunkedISLsonaCiscoorC-TypefabricarecalledPort-ChannelsCiscoTrunkingmeansanISLorPort-ChannelisconfiguredtoallowmultipleVSANstraversingtheISL(TE)portsThedefaultforCiscoistocreatePort-ChannelsinTEmodeandallowtrafficforallVSANsISLsontheprivatefabricmustNOTbeconfiguredasTEports,ortheVSANsallowedstatementmustonlyincludetheprivateVSANCiscoandC-TypeImplementationExampleshowinterfaceport-channel1…….
port-channel1isupHardwareisIPStoragePortWWNis24:01:00:2a:6a:b4:71:e0Adminportmodeisauto,trunkmodeisautoPortvsanis1Trunkvsans(adminallowedandactive)(1,5)TrunkmodeshouldbeturnedoffforPort-ChannelsontheprivateVSANAndallowedVSANsshouldonlyincludetheprivateVSANsc9222ia#conftsc9222ia#intport-channel1sc9222ia#switchporttrunkmodeoffsc9222ia#switchporttrunkallowedvsan1BrocadeandB-TypeDesignConsiderationsXISLsallowmultiplevirtualfabricstotraversethesamephysicalISLsPrivatefabricsmustnotbeallowedtotraversthesharedXSLsSeparateISLsmustbeimplementedinthevirtualfabricsbeingusedforthepublicandprivatefabricsNotallBrocadeswitchessupportVirtualFabrics.
ForsmallerBrocadeswitchesthefabricdesignmustincludeseparatephysicalswitchesforthepublicandprivatefabricsInter-siteLinkSizingSomebaselinenumbers.
Alinkisconsideredfullyutilizedat80%used.
Basedontheabove,foreachGigabitofspeed,youcanachieve100MBpsthroughput,insteadofthetheoretical125MBpswhendoingadirectconversionSpeedinGbpsMaxDataRateinMBps8800161600323200TheabovenumbersassumethephysicallinkisoptimalFactorssuchasdistanceandthehealthofthelinkcanlowerthemaximumthroughputInter-siteLinkSizingConsiderationsHyperSwapvolumesmirrorallwritesbetweensites.
Additionally,theclustermay(intheeventofaback-endstoragefailure)mayrequiretheforwardingofreadsacrosstheprivateinter-sitelink.
Assuchthefollowingneedstobeconsideredwhensizingtheinter-sitelink:AverageWriteDataRateofallvolumesPeakWriteDataRateofallvolumesPerformanceexpectationsduringfailurescenariosInordertoassessthis,youwillwanttoreviewlongtermhistoricalperformancedataofyourexistingstorageenvironment.
Asageneralrule,aminimumof1month'sdatashouldbeusedtodeterminetherequirements.
Thegoalistoensureanaccurateworkloadprofileofallphasesofproductionarecapturedintheassessment.
ProTip:IBMStorageInsightsorSpectrumControlcanbeusedtogatherthelongtermperformancedata.
IfusingStorageInsights,IBMwillautomagicallyhavethisdataaswell!
Inter-siteLinkSizing-ExamplesAssumingalocalthroughputdemandof2GB/sonthevolumes.
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16Gbps=1600MB/s2GB/s=2048MB/s2048/1600=1.
28Soeasymathsaysweneed1.
2816Gblinks.
Thisisabsurdasyoucan'thaveafractionalport,sothisisreally216Gblinkswhichultimatelyprovideapeakbandwidthof3200MB/sIfwedothesamemathwith8Gbports.
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2048/800=2.
56=roundup=38Gbportsforpeaksupto2400MB/sThesamemathwith32Gbports.
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2048/3200=0.
64=roundup=132Gbportforpeaksupto3200MB/sInter-siteLinkSizingAdditionalConsiderationsSimplymeetingtheminimuminthepreviousexamplemaynotprovideadequatebandwidthforworkloadgrowthorpeakdemandsIdeallyeachfabrichaslinkssizedtocarrytheentireloadifoneofthefabricsfailsTheeasymathtofactorinredundancyis2xthecalculatedcapacity

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