The Assure MIMIX for AIX disaster recovery process consists of three operations:
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failover—swapping from the production server to the recovery server
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resync— bring the production server data up to date with the recovery server data
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failback—swapping back to the production server from a local or a remote recovery server.
A failover operation is typically followed by a resync and then a failback operation, which is the process of returning the role of production server to its original location after a system failover or a disaster has taken place.
These operations use remote mirror Backing Store File Container (BSFC) replicas as the “failover-production” data. This requires only a configuration change and no data movement, resulting in reducing the time that is required to resync the volumes after switching sites.
Use of the statemap tracking mechanism increases the efficiency of the data resync, as it minimizes the amount of data transfer that must take place. The Production application continues to run during the resync operation.