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Chapter 1 Data Replication Overview
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The RV that has been separated from the MV at an arbitrary time by using the data replication function
can be used for other purposes. Because the disconnected RV is independent from the MV, using the
RV will bring the following effects:
Backup
High-speed backup
Online data replications can be created through simple operations. These replications can be
used as backups as they are. As the replications are created in the disk array they do not affect
the online system.
Backup in parallel with online service
Saving to tapes, etc. can be done from RVs in parallel with MVs, thus making it unnecessary to
worry about online responses during saving.
Parallel processing
Executes the online and the search work simultaneously.
By making the RV data independent for the search work, the update work and the search work
can be operated without interference, thus solving the problem of competing for disk access and
the resulting deadlock.
Simultaneous execution of batch processing
Execution time of batch processing can be substantially shortened by using RV.
Constructing an evaluation environment
Application evaluation
An environment for application evaluation can be constructed with ease by using an RV.
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