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Major function of NEC Storage RemoteDataReplication Asynchronous
When a replicated volume is copied to the master volume for restoration, selection is possible whether the replicated volume reflects access from business servers to the master volume or not.
Remote replication is executed in a geographically distant site.
A pair connected in serial combination by NEC Storage RemoteDataReplication Asynchronous and NEC Storage DynamicDataReplication can be replicated simultaneously.
A pair in a remote disk array device can be operated remotely through a link of NEC Storage RemoteDataReplication Asynchronous.
Flexible switching between a main site and a remote site is realized.
This function enables to configure NEC Storage RemoteDataReplication Asynchronous on a low-speed link of 10Mbps to 30Mbps or on a best effort link (no bandwidth guarantee).
This function realizes disaster recovery and data migration at low cost.
one RDR pair (coexistence of DDR pair is possible)
prohibited (sequential configuration of DDR pair and RDR pair is permitted)
not available.
background copy only.
RDR pair can be set between a disk array device with NEC Storage RemoteDataReplication and a disk array device with NEC Storage RemoteDataReplication Asynchronous . But the limitation of NEC Storage RemoteDataReplication Asynchronous applies to this pair.
* Other functions are same.
Online data can be replicated easily. This replicated data can be used as a backup. Since data is replicated using an NEC Storage disk array system resource only, the operation does not put any impact on servers or influence online business. Data can be extracted from a replicated database and saved to a tape without interrupting on-going business operations. Online response during data saving is perfectly safe.
By retaining the data for search operation independently in a replicated volume, business operation and search operation can be performed without influencing each other. With this configuration, disk access competition and deadlocks are eliminated.
Concurrent batch processing using a replicated volume significantly reduces processing time.
An application evaluation environment can be configured easily by using replicated volumes. Repeated tests with the same data are possible by using a restored copy without reflecting master volume update to the replicated volume.
