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EPHD04+HDcctvDVR

6.7.3 RAID

TheRAIDfunction(RedundantArraysofIndependentDisks)canenabletwoharddiskstoact

asone,allowinguserstoachievedataredundancy(RAID1)orgreatereffectivediskspeed

(RAID0).

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Note:ItisrecommendedtousetwoHDDswiththesamecapacity.Otherwise,thesmaller

sizewillbetheamountofdiskspaceusedonbothdrives.Forexample,ifHDD1is200GB

andHDD2is500GB,andRAID0isselected,thetotalamountofdiskspacerecognizedby

theDVRwillbe400GB(200GB+200GB).

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Figure6‐32

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LocalDriveConfiguration

RAID0:RAID0isdesignedtoimprovediskspeed.Dataiswrittentotwodisksalternatively,

insteadofjustone,whichimprovestheoverallsystemspeed.NotethatifthetwoHDDsare

withdifferentcapacity,thesmallersizewillbetheamountofdiskspaceusedonbothdrives.

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RAID1:RAID1isdesignedfordiskredundancy.Thesamedataiswrittentotwodisks.When

oneharddiskfails,theotherharddiskcontainsallthedata.NotethatifthetwoHDDsare

withdifferentcapacity,thesmallersizewillbetheamountofdiskspac

eusedonbothdrives.

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LocalDriveInformation:Displaythestatusofthelocaldrive.

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