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Q. |
When should I use replication? |
A.
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Replication
is the process of duplicating data and storing that data in more than
one location for several purposes. Replication is often done multiple
times a day or in near real-time.
In practice, the use of
replication most often applies to duplicating the data records in one
database to one or more other databases for disaster recovery purposes;
however, replication can also apply to files and other data items.
Therefore, if a system crashes, the backup system is completely up-to-date (assuming synchronous mirroring) and, if configured to do so, can be immediately used as the primary system.
In addition, the asynchronous use of replication allows for ‘backups of the backups’ to be made while the primary system is still up and running or the files are locked.
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