Legacy HDS Forums

What Mode Of Replication Technology Should One Use?

Discussion created by Legacy HDS Forums on Jul 17, 2006
Latest reply on Aug 2, 2006 by Legacy HDS Forums

Originally posted by: Christophe



A first line of protection can be local or in-system replication, a process that copies volumes of data internal to the storage array.  This allows customers to leverage point in time copies for a variety of needs, the scope of which is well beyond data recovery and includes business reasons such as; i) change/control, ii) maintenance, iii) use by other applications for analytical purposes and more.  More importantly, using a local full volume copy on a cyclical basis also protects users from data corruption, allowing them to revert back to an uncorrupted version of their data.  This is a critical function for some mission-critical applications, such as email and high transactional OLTP applications for example.

If site-wide events occur however, data assets are exposed to destruction.  To mitigate this risk, replicating data over a certain distance is the answer.  Two remote replication modes  traditionally used are i) synchronous remote replication and ii} asynchronous remote replication.

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