Synology RAID Calculator: SHR vs. RAID? - WunderTech

RAID 5/SHR allows you to have one hard drive fail while maintaining the integrity of the ... Skiptocontent Postauthor:WunderTech Postlastmodified:February24,2022 Postcategory:Synology Todaywe’regoingtolookattheSynologyRAIDcalculatorandexplainwhythisshouldbethefirststepyoutakeanytimeyoupurchaseaSynologyNAS. WhenyoupurchaseaSynologyNAS thengetreadytosetitup,you’regoingtohavetocreateastoragepoolandvolume.Whenyoucreatethoseitems,you’regoingtobetaskedwithselectingaRAIDtype,whichiswheretheSynologyRAIDcalculatorishelpful.Ingeneral,youwanttoensurethatyouhavesomeformofredundancy.Redundancyensuresthatifoneofyourharddrivesweretofail,yourNASwouldbeabletorebuildthatdriveusingtheotherdrivescurrentlyavailable. Forexample,ifyousetupRAID5withfour,10TBharddrivesandoneofthoseharddrivesweretofail,you’llbeabletoremovethebadharddrive,thenuseyourSynologyNAStorebuildanewharddrive.Followingthisapproach,you’llexperiencenodata-lossandaftertheNASfinishesrebuildingthenewdrive,you’llbeinthesameplaceyouwerewhenyoufirststarted. TableofContents show RAIDTypeSuggestions DifferenceBetweenRAID5andSHR(SHRvs.RAID) Conclusion–SynologyRAIDCalculator RAIDTypeSuggestions TherearefourRAIDtypesthatIgenerallyrecommend: RAID5 RAID6 SHR SHR-2 Overall,RAID5andSHRareverysimilarandRAID6andSHR-2areverysimilar(wewilllookatthedifferencesbelow).RAID5/SHRallowsyoutohaveoneharddrivefailwhilemaintainingtheintegrityofthedata,whileRAID6/SHR-2allowsyoutohavetwodrivesfail.Ifyouhaveatwo-bayNAS,usingRAID1isagoodoption,butpleasekeepinmindthatyouwillonlyhaveonedriveofusablespace. DifferenceBetweenRAID5andSHR(SHRvs.RAID) RAID5isextremelysimple.Thetotalstoragespacewillbedeterminedbythedrivethathastheleaststoragespace.Wewilllookatthisexamplebelow: Drive1:12TB Drive2:12TB Drive3:4TB Drive4:4TB Inthisexample,youhave30TBoftotalspace,however,youwillhave12TBofusablespaceinRAID5.4TBwillbesavedforredundancyand16TBintotalwillbeunused(asyouareusingtwo,12TBdrivesbutalsousingtwo4TBdrives).Onceagain,thisisbecausethedrivewiththeleaststoragespacewillbeused,andonedrivewillbereservedforredundancy. Ilikeusingthisexamplebecausefromausable-spaceperspective,you’llhavetheexactsametotalsassimplyusingthefirsttwo12TBdrivesinanSHRarray. However,usingSHRwiththedrivetotalsabovewillgiveyou 20TBofusablespaceand12TBofredundancy. TheexampleaboveisfromSynology’swebsiteusingtheSynologyRAIDCalculator. ThisisoneofthemainreasonswhyusingSynologyHybridRaid(SHR)issuperiorforuserswhoareusingmixeddrives.Ifyou’reusingthesamedrivesizeddrives,youwon’tbenefitfromSHR(unlessyou’dlikeflexibilitymovingforward).Thereasoniswell-explainedbySynologyandissomethingthatIsuggestyoureadandunderstandasitwillhelpexplainhowSynologyHybridRaid(SHR)andRAID5differ. Asnotedearlier,youcanuseRAID6orSHR-2aswell,withtheprincipalsfromabovebeingtrue.Themaindifferenceisthatyouwillhavetwodrivesthatcanfailratherthanone.UsingtheSynologyRAIDcalculator(andanexampleoffour12TBdrivesandtwo4TBdrives),youcanseethatSHR-2willgiveus32TBofusablespacewith24TBofprotectionratherthanthe16TBofusablespace,8TBofprotectionand32TBofunusedspacethatRAID6givesus. Conclusion–SynologyRAIDCalculator UsingtheSynologyRAIDcalculatorshouldbetheFIRSTthingyoudowhenyougetyourNAStoensurethatyousetupyourStoragePool/Volumeproperly.Thiswillensurethatmovingforward,you’llhavethecorrectconfigurationandknowwhatdrivesyoucan/cannotadd. Thankyouforreadingthetutorial.Ifyouhaveanyquestions,feelfreetoleavetheminthecommentsectionoftheYouTubevideoabove! Pleaseshareifthishelpedyou! Facebook Twitter LinkedIn Tags:NAS,Synology YouMightAlsoLike BestSynologyNASUPSDevices March31,2022 HowtoUpdateDockerContainersonaSynologyNAS January7,2021 SynologyDataScrubbingSetupTutorial March17,2022 HowtoSSHintoaSynologyNAS October17,2021 Searchthiswebsite TagsActiveBackupforBusiness Backup Bitwarden Cloudflare DDNS DNSServer Docker DSM HyperBackup Linux MediaPlayer NAS Nginx OpenMediaVault OpenVPN pfSense Pi-hole Proxmox RaspberryPi Rsync SSH SSL Synology SynologyNAS TrueNAS VPN WireGuard WordPress Xpenology CloseMenu Facebook Twitter LinkedIn Save Email