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Dell PowerVault ME4 Series Storage System Administrator’s Guide

About replicating virtual volumes in the Replications topic

Replication for virtual storage provides a remote copy of a volume, volume group, or snapshot—thereafter known as volume—on a remote system by periodically updating the remote copy to contain a point-in-time consistent image of a source volume. After an initial image has been replicated, subsequent replications only send changed data to the remote system. All replications, including the initial one, only replicate data that has been written as opposed to using all pages of data from the source. This feature can be used for disaster recovery, to preserve data, and to back data up to off-site locations. It can also be used to distribute data.


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