PowerHA SystemMirror for AIX Enterprise Edition

The PowerHA V7 Enterprise Edition enables clients to readily extend their traditional data center cluster to incorporate a remote location environment for disaster recovery. The V7 cluster makes disaster recovery testing relatively simple while putting the operator in charge of managing failover policy and procedures.

PowerHA SystemMirror Enterprise Edition V7 supports HyperSwap configurations with the IBM DS8800 or DS8870 in an IBM TotalStorage® Metro Mirror configuration. This advanced technology provides the capability for a cluster to span two sites with the storage and servers cross coupled in a manner that keeps the application resilient through either a storage server or a production server outage (for active-active workloads). HyperSwap can also be deployed in single AIX logical partition (LPAR) configurations. Customers can enable HyperSwap for multi-node cluster configurations while at the same time exploiting the storage mirroring and swapping capabilities for single node AIX LPARs not in the cluster.

Geographically dispersed configurations can be deployed via a stretched cluster configuration defined as having a single cluster repository or via a linked cluster configuration with two independent yet linked cluster repositories. A stretch cluster can also be deployed with the Standard Edition and logical volume manager (LVM) mirroring in a cross site mirror configuration similar to what clients have deployed in previous versions. The stretched cluster configuration provides three levels of cluster communication redundancy via either unicast or multi-cast across the network, SAN fabric and repository disk.

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