Dell Powervault DL2300 Manual de usuario descargar pdf (Pagina 10)

FLEXIBLE SOLUTION OPTIONS THAT FIT ANY REMOTE SITE

DataReplicationistheprocessofcopyings pecified,file‐levelcontentfromone

computer,thesourcecomputer,toanother,thedestinationcomputer.Thisis

achievedthroughaninitialtransferofthespecifieddata,afterwhichthe

replicatedcopyiskeptupdatedinnearlyrealtimewithanychangesthataremade

tothedat

onthesourcecomputer.Thisreplicatedcopyonthedestination

computerprovideson‐going,nearly‐real‐timedisasterrecoveryprotectionforthe

sourcecomputer,unlikemostdataprotectionsolutionswhichrequiresignificant

timetoperformacompletedataprotectionoperation.Inaddition,data

replicationprovidesabasisforaddition

alda

taprotectionactivities,suchas

RecoveryPoints(snapshots)andbackupsofRecoveryPoints.



ReplicationScenarios

Severalcommonscenariosfordatareplicationareillustratedbelow,buttheseby

nomeansillustrateallofthewaysinwhichdatareplicationcanbeconfigured.



• ReplicationfromoneSourcecomputertooneDesti

nationcomp

uter

• Fan‐In:ReplicationfrommultipleSourcecomputerstoasingle

Destinationcomputer

• Fan‐Out:ReplicationfromoneSourcecomputertomultipleDestination

computers



One‐to‐OneDataReplication

Thisisthemostfundamentalconfigurationfordatareplication.Asinglecomputer

ontheLANorWANhasitsdatareplicatedtoano

therco

mputer,eitherlocalor

remote.Thisprovidesprotectionofthesourcecomputeragainstcatastrophic

failureofthecomputeritself.



Many‐to‐OneDataReplication

Inthisconfigurationfordatareplication,referredtoas"Fan‐In",multiple

computersontheLANorWANhavetheirdatareplicatedtoasinglecom

puter,

eitherlocalorremote.Thisprovid

esprotectionofallofthesourcecomputers

againstcatastrophicfailure,whilemaximizingtheuseofresourcesbydirectingall

thedatatoasingledestinationcomputer.



One‐to‐ManyDataReplication

Thisconfigurationfordatareplication,referredtoas"Fa

n‐Out"

,addssignificantly

totheprotectionaffordedtothesourcecomputer,becauseoftheredundancy.A

singlecomputerontheLANorWANhasitsdatareplicatedtomultiplecomputers,

anyofwhichcanbeeitherlocalorremote.Thisprovidesprotectionagainst

catastrophicfailureofanentiresite,aswellasthesourcec

omputeritself.

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Dell Powervault DL2300 Manual de usuario Pagina 10

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