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Chapter 2 Overview of NEC Storage ReplicationControl SQL Option
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By creating an RV of the business operation database, the database can be separated into different
volumes to execute the update work and the search work respectively. This makes it becomes possible
to execute the database search work without affecting the database update work.
The NEC Storage ReplicationControl SQL Option must be installed on the server performing the search
work.
The search work uses the standby database function on the Microsoft SQL Server 2000.
When starting the business operation
Connect/
separate
Master
Volume
(MV)
Master
database
(a) When starting search work, the MV and the RV are synchronized and separated.
(b) Hereafter is applying the transaction log backup reflects, the updated part of the business
operation volume.
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Replication
Volume
(RV)
Run as standby
data base
Figure 2-4 Parallel processing of Search Work
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After the business operation is started
Update
work
Applying the
transaction log
Master
Volume
(MV)
Master
database
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Search
work
Replication
Volume
(RV)
Reflecting the
update part
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