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Chapter 2 Overview of NEC Storage ReplicationControl SQL Option
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By creating and separating an RV of the business operation database, the database can be used by other
servers. This is used for constructing test environments.
When constructing an environment, replications of the database can be made without suspending
operations using the Microsoft SQL Server 2000. When the business operations load is lower, the MV
and the RV are synchronized and separated.
Nighttime
Connect
Master
Volume
(MV)
Master
Reflecting the
database
Figure 2-5 Parallel processing of Operations Accompanied by Update
(a) During the daytime, keep the MV and the RV separate.
(b) During the nighttime, stop parallel operation, synchronize and separate the MV and the RV.
(c) Execute the operation DB and the replication DB in parallel. (RV being the data of the previous
day)
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Replication
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updated part
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Daytime
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Separate
Business
Volume
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Master
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Replication
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Data from previous day
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