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iFT Series Hardware Installation Manual ADPRO

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3.9 RAID 1 Support

3.9.1 About RAID 1

RAIDstandsforRedundantArrayofIndependentDisks(originallyRedundantArrayofInexpensiveDisks).Itisa

storagetechnologythatcombinesmultiplediskdrivecomponentsintoalogicalunit.Dataisdistributedacross

thedrivesinoneofseveralwayscalledRAIDlevels,dependingonthelevelofredundancyandperformance

required.RAIDhasbecomeanumbrellatermforcomputerdatastorageschemesthatcandivideandreplicate

dataamongmultiplephysicaldrives,whiletheoperatingsystemcanstillaccessthedataasbeingononesingle

drive.

RAID1isaboutmirroringwithoutparityorstriping.Dataiswrittenidenticallytotwodrives,therebyproducinga

“mirroredset”:thereadrequestisservicedbyeitherofthetwodrivescontainingtherequesteddata,whichever

onehastheshortestsearchtimeplusrotationallatency.

3.9.2 Activating RAID 1

RAID1requiresminimum2harddisks.ThesizeoftheRAID1recordingcombinationisthesmallerofthe

2disksinstalledinyourdevice.Forexample:ifyouhavea1TBdiskanda2TBdisk,theRAID1recordingdisk

hasa1TBcapacity.

Caution!

WhenyouapplyRAID1,thesystemformatstheselecteddisksanderasesthedataonthedisks.

Youwillloseallthedataonthedisks.Backupyourrecordingsfirst.

ToactivateRAID1,proceedasfollows:

1. Stopthedevice,andswitchoffthepowersupply.

2. Connectamonitor/screenandkeyboardtotheXOdevice.

3. Switchonthepowersupplyandwaitforthebootwindowtoappear.

4. SelectXO Installer andpressEnter.

Note

Thebootwindowonlyappearsforafewseconds,thenthedevicecontinuesbooting.Tomake

surethatyoudonotmissit,pressthearrowkeysonthekeyboardrepeatedlywhilethedeviceis

booting.Thedevicewillthenstopatthebootwindow,andthisgivesyoutimetoselectandopen

theXO Installer menu.

5. ChooseUpdate current system>Manage recording disks.

6. UsethearrowkeystoselectthedesiredharddiskandpressEnter.AnXappearsinfrontoftheselected

harddisk(betweenthebrackets).

7. Selectalsothesecondharddisk.

Xtrails ADPRO iFT User Manual

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