Source and Target LUNs

A replication pair is composed of two LUNs: a source LUN and a target LUN.

In most cases, the source LUN already exists and has been mapped to the host that is using the LUN for production work.

The source LUN can be one of the following:

An existing LUN that resides on the Oracle FS System.
A new LUN explicitly set up as the source for a replication pair.

The target LUN must be the same size as or larger than the source LUN.

As part of the replication pair creation, Oracle MaxRep for SAN automatically creates the following items:

All necessary host associations in the Oracle FS System.
Mappings to the Oracle MaxRep Replication Engines for the source and target LUNs.

During replication pair creation, Oracle MaxRep for SAN also removes any existing LUN mappings of the target LUN to other hosts. For data integrity purposes, the target LUN may only be mapped to the Replication Engine.

Note: For multi‑hop replication, the target LUN is mapped to two Replication Engines in an asynchronous configuration.