What is SHR? And what is the difference between Synology ...

Like traditional RAID, SHR will provide you with the ability to protect your data from the loss of a single HDD or SSD. However with SHR-2 you ... Skiptocontent WhatisthedifferencebetweenSHRandRAID? SynologyHybridRAIDorSHR,hasbeenaroundforquiteawhilenow,andthoughithasnotmakethebigimpactthatSynologyNAS’Btrfsfilesystemhas,itisstillanincreasingpopularchoiceformanywhenitcomestoprotectingtheirhardwareandtheirdatainaHardDriveenclosure.BothNASandDASutiliseRAIDasaformofprotectionfromaHDDorSSDfailingandtheconsequencesofdatalossthatcanfollow.ItshouldalwaysbehighlightedthatbothtraditionalRAIDandSHRareNOTformsofBackingupandyoushouldALWAYShaveaoffsiteorattheveryleastoff-systembackupinplacecreatingreal-timeimagesandcopiesofyourmissioncriticaldata.Howevercomingbacktothesubjectathand,whichmethodofredundancyshouldyoubeconsideringforyourstoragearray –RAIDorSHR?   WhatisRAID?  RAID,orRedundantArrayofIndependentDisks,wasoriginallymanyyearsagoasawayofcombininglotsofsmallerdiskstogethertocreateamuchlargerstoragevolume,withredundancyasasecondarypriority.HoweverwiththelargescalegrowthofHardDrivestheselast5yearsandmore,withTerabytesofdatabecomingavailableonsingledisks,theprimaryfunctionofRAIDhasshiftedtowardsdataprotection. Thatisn’ttosaythatpoolingsmallerdrivesdoesnotstillhappen,butwithdrivescurrentlyavailabletobuyin8TBsuchattheSeagateArchiveDrive,youcanseewhythepurposeofRAIDinarchiveandcoldstorageismoreabouthardwareprotection. Availableinnumeroustypes,butthemostpopularofwhichisbelow: JBOD –JustaBunchofDisks,notreallyaRAIDinanyshapeorform. RAID0 –AmethodofcombiningtwoharddrivesormoreintoasingleGIANTvolumeofdata,howeverifyouloseonedrive,youloseallyourdata! RAID1 –Usingpairsofdrives,thiswillHALFyourtotalcapacity,butgiveyouacompleteanduptothesecondcopyofallyourdata.Meaningifadrivefails,youhaveanEXACTcopyreadytoaccess. RAID5 –OneofthemostpopularRAIDlevels,Itrequiresatleast3drivesormore,dataiswrittenacrossthedrivesinstripes(waves)andacrosseachstripeofdataonedriveholdsatinynuggetofdatacalled‘parity’withisbasicallyacodedblueprintofthedataontheotherdrivesinthatstripe,theneachstripehastheparitydepositedonadifferentdiskeachtime.Theresultisthatifadrivefails,thesystemcanre-buildthedatausingtheparity(blueprints)oneachstripe.ThiscantaketimethoughanditshouldalsobenotedthatthereadandwriteofdatainaRAID5isalittleslowerthannormalasthesystemhastoworkoutbackgroundcalculationswhilstwritingdata. RAID10 –ThinkofthisasacombinationofRAID0andRAID1,orRAID1+0.Yourequireatleast4drivesanddrivesarepairedupas2×2.Theresultisthatyouhavetwoharddriveswhosecapacitytoaddedtogether,andanotherpairofdrivescreatingrealtimecopies(again,uptothesecond)ofallthedata.ProbablythemostexpensiveofalltheRAIDtypeshereintermsofcostperGB,butgivesyoumuchMUCHhigherreadandwritespeedscomparedtootherRAIDlevels.   WhatisSHR? SHRisfarmoreautomaticRAIDchoiceanddesignedforthelesstechnicallymindedtoprotecttheirdatafromhardwarefailure,withouthavingtodelvetodeeplyintocomplexmatterslikeparityandstriping.ItisalsosignificantlyeasiertosetupandconsiderablymorescalablethantraditionalRAID.ItisnotsupportedonallSynologyNASserverdevicesbutIwouldrecommendcheckinginadvancethatyourchosenSynologyNAScanutiliseSHRhere.ButotherwiseifyourNAScansupportit,SHRarriveswithahostofbenefitsbothintermsofdeploymentspeedandinmaximumavailablecapacity.SHRdoesn’tarriveinmultipletypeslikeRAID,butinjusttwodifferentversions.SHRandSHR-2.SHRgivesyoutheabilityprotectyourdatafrom1lostharddriveandSHR-2protectsyoufromtwo.HoweverthekeystrengthsinaSynologySHRRAIDsetupis: Youonlyneed twodiskstobuildanSHRarrayandafterthatyoucanadddrivestotheSynologyHybridRAIDatanytime. InanSHRVolume,youcanmixandmatchHardDrivesandletthecalculationsoftheSHRlayerdothework.Thisisn’tjustatthemomentofinstallation,butanytimeyoulike.So,ifyouhaveforexample4x2TBdrivesina8-Bayenclosureandatalaterdateadd4x4TBdrives,notonlywillyoubeabletoaddtheselargerdrivesofanyBRANDorspeed,butalsogetthemuch,muchbiggertotalcapacitymadeavailabletoyou.WithanSHRRAID,regardlessofthemixingofthedrives,intermsofredundancyvsCapacity,youwillonlylose1xthelargestdrive.WhereasinaRAID5ifyoumixeddrives,ALLofthemwillbeviewedandRAID’edasasthesmallestavailabledriveandyoustillonlyhaveredundancyforasingledrive.So,inpractice: TheSynologyDS1815+ RAID5 –8Drives (4x2TBand4x4TB) TheSynologyDS1815+ SHR –8Drives (4x2TBand4x4TB) 1Diskofredundancy(2TB) 1DiskofRedundancy(4TB) TotalAvailableCapacity14TB TotalAvailableCapacity 20TB LiketraditionalRAID,SHRwillprovideyouwiththeabilitytoprotectyourdatafromthelossofasingleHDDorSSD.HoweverwithSHR-2youwillbeprotectedfromlosing2HDDorSSD. SlightlylessspeedthanatraditionalRAID.Lessthan1%differencebetweenSHRandRAID5,forexample. SHRvsRAID –Whichisbetter? Andso,downtobusiness.NowyouknowwhatSHRandRAIDare,whatisnowimportantiswhichshouldyouchoose.Bothareexcellentmethodsofredundancyandhavetheirownbenefits.Butletstakealookbelowattheirstrengthandweaknesses: SHRStrengths Fastertosetup Expandable Abilitytomixdrives Greateravailablecapacitywhenmixingdriveswhilststillmaintaining1diskofredundancy Ifadrivefails,theSynologycanstillaccessthefullvolumedata –thoughwilloperatemuchslowertillareplacementdriveisinstalled DrivescanbecarrierovertoanewSHRsupportedSynologyandthenewNASwillseethevolumeandthedata SHR Weaknesses AlittleslowerthantraditionalRAIDbutequalspeedtoRAID5and6 YoucannotremovetheDrivesinanSHRRAIDandinstalltheminanewnon-SHRNAS,theywillneedtobeformatted. AndnowontoTraditionalRAID RAIDStrengths Broaderoptionsfordeployment.MoretaskspecificRAIDsetslikeRAID10orRAID50arepossible BetterchanceofHardDrivesbeingrecognizedinanewNAS/DASenclosureifyouinstalltheminanewunit StillscalablebetweenRAIDs,butnotasmuchasSHR Onthewhole,betterReadandWritespeedsavailable NotjustlimitedtoSynology RAIDWeaknesses YoucannoteffectivelymixdrivesandtoincreasethetotalcapacitywillinalllikelihoodonlybepossiblebyreplacingALLdrivesinthearray Cannotaccessthedataafteradrivefailureuntilanewdriveisinstalled(exceptionofRAID1) TakesnoticeablylongertocreateaRAID arraycomparedwithlikewiseSHR   RAIDorSHR –TheResult  Itprobablywon’tcomeasanenormousshockwhenIsaythatIrecommendusingSHRwhenusingamodernSynologyNAS.Thebenefitinthescalingoptionsalonemadeitarealstandoutchoiceformeandforthosewhoarebrandfaithful,youwouldonlymakeitmoreconvincing.TraditionalRAIDisstillveryrelevantandvery,veryuseful.ButifyouhavetheoptiontoadoptSHRinyourNASsetup,Iurgeyoutodosoatthepointofinstallation.IfyouareinterestedinlearningmoreaboutSynologyNAS,whynotsubscribetoNASCompares.comtoday.         📧LETMEKNOWABOUTNEWPOSTS🔔 Enteryouremailaddresstosubscribetothisblogandreceivenotificationsofnewpostsbyemail. 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NOTIFYME Wanttofollowspecificcategory?FollowaTagBestRAIDBestSynologyCompareRAIDDS1815+DS216DS2415+DS716+DS916+MacRAIDNASSynologyRAID5orSHRRAID6RAIDDifferencesraidORshrRAIDSoftwarerightRAIDSHRSHRRAIDSHRvsRAIDSHR-2SHR-2orRAID5SynologyDS1815+SynologyDS216+IISynologyDS2415+SynologyDS716+IISynologyDS916+sYNOLOGYhYBRIDraidsynologynasSynologySHRwhatisRAIDWhichRAIDWhichRAIDdoIneedWhichSynologyWhichSynologyRAIDAlsoRead...SHR(drivemixing)compatibleHowtorecoverSynologyRAIDiXRAIDvsRAID5/6vsSHR-besDifferencebetweenRAIDs(job,SHR-nas-listHowtohaveSHRonXSseriesSRAIDVSSHR-raidenclosuretNASRAID-6orSHR-2-howtoSynologyHybridRAIDExplainedSHRvsregularRAID-whichon Youcanalsofollowspecificsearchterms: ThisdescriptioncontainslinkstoAmazon.Theselinkswilltakeyoutosomeoftheproductsmentionedintoday'scontent.AsanAmazonAssociate,Iearnfromqualifyingpurchases.VisittheNASComparesDealFindertofindthebestplacetobuythisdeviceinyourregion,basedonService,SupportandReputation-JustSearchforyourNASDriveintheBoxBelow Otherproductsmentionedonthisarticle: WheretoBuyDS1815+   SEARCHINTHEBOXBELOWFORANYOTHERNAS NeedAdviceonDataStoragefromanExpert? 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Sharethis:ClicktoshareonTwitter(Opensinnewwindow)ClicktoshareonFacebook(Opensinnewwindow)MoreClicktoshareonPinterest(Opensinnewwindow)ClicktoshareonReddit(Opensinnewwindow)Clicktoemailthistoafriend(Opensinnewwindow)ClicktoshareonTumblr(Opensinnewwindow) Related Postnavigation The5ThingsyoushouldknowaboutLong-termDataArchivingandColdStorageTheSynologyDS216JverustheWDMyCloudEX2UltraNAS–BrandvsBrandNASComparison DISCUSSwithothersyouropinionaboutthissubject. ASKquestionstoNAScommunity SHAREmoredetailswhatyouhavefoundonthissubject CONTRIBUTEwithyourownarticleorreview.CickHERE IMPROVEthisnicheecosystem,letusknowwhattochange/fixonthissite 9thoughtson“WhatisSHR?AndwhatisthedifferencebetweenSynologyHybridRAIDandOrdinaryRAID?” IusedSHRbecauseit’swhatwasrecommendedandIdowhateverprocesstheofficialpeoplerecommendbecauseI’mgoodwithcomputersbutI’mnotgoodenoughtotrustmyselfwithsensitivedata.REPLYONYOUTUBE Loading... Whowantstotakeashotwithmeeverytimehesays“drives”😀REPLYONYOUTUBE Loading... I’mpgradingfromaDS218playtoaDS920+.Ihave28TB5400RPMWDReddrivesthatarerunningoutofroom.CanIaddasingle12TB7200RPMWDReddriveordoIneedtostickwith5400RPM?REPLYONYOUTUBE Loading... Thankyou,evenwatchingthisin2021stillusefultome.REPLYONYOUTUBE Loading... thankyousomuchforthisguide,beensearchingallovertofindexactlythis🙂REPLYONYOUTUBE Loading... canyoudoitinenglish,oratleastputsubtitles??REPLYONYOUTUBE Loading... HiIloveyourchannel,greatinfo!IhaveaquestionIhopeyoucanhelpmewith.IhadaDS411enboughtanewDS920+.ItransferredtwoHDD’sfromtheoldtothenew(SHR)anditworksgreat.IwanttousevirtualmachinebutmystructureisEXT4anditrequiresBTRFS.Nowmyplan:Iwanttoejectdisk2sothesystemssaysthereisadamageddiskwhilebootingup.ThenIwanttoerasedisk2andmakeanewvolumewithBTRFS.ThenIwanttocopyalthedatafromdisk1todisk2.ThenIwanttoerasedisk1andmakeaSHRpoolwithdisk2.Doyouthinkthisisagoodplan?OrdoyouthinkIcan’tcopythedata,becauseIdon’tknowforsurewithSHRifit’sanexactcloneorsomethinglikeablueprint.Thankyouinadvanceforyourhelp!REPLYONYOUTUBE Loading... wasalwayswonderingaboutSHRtechnology.wellexplained,thankyouverymuch!REPLYONYOUTUBE Loading... IncrediblyHelpful–You’reknowledgedemandsrespect,andyourdeliveryiseasytofollow,charmingthoroughyetsuccinct.Thankyouandwelldone.REPLYONYOUTUBE Loading... Commentsareclosed. Searchfor: NeedHelp? 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