XIV Multi-Site Mirroring
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Introduced with the IBM® XIV® Storage System software v11.5 the multi-site mirroring function, also referred to as the 3-way mirroring in the XIV GUI, enables world-class high availability and disaster recovery capabilities.
The solution combines methods from a synchronous replication and two asynchronous replications across three sites, in a concurrent topology (star topology) configuration.
One of the asynchronous mirror coupling is in standby
To read more about the implementation and usage of this new function, refer to the just published IBM Redbooks publication,
You can also consult, for more comprehensive information, the IBM Redbooks, XIV