Assure MIMIX for AIX runs automatically on a production server, creating a mirrored copy of protected data on the recovery server. For increased availability, it is recommended that the recovery server be a remote machine. The following illustration shows storage data flow during Assure MIMIX for AIX replication:
On the production server, write operations to storage are split by the datatap. One copy of the data is delivered to the protected volume. The other copy of data is combined with metadata and stored in the redo log. The LCA sweeps through the production journal and reads any log that has been filled, or sealed, then transmits the log file over TCP/IP to the ABA which stores the log file to disk on the recovery server.
The ABA sweeps through the log files in time order and uses the metadata reads from the replica to calculate the amount of change required to apply the working log file and stores this information in the undo log. The ABA then reads from the redo log and applies the modification in block order to the replica.