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z/OS Basic HyperSwap

Basic HyperSwap is a z/OS high availability feature that is available with the DS8000 storage system. It provides the capability to switch host I/O operations transparently without application outage, between Metro Mirror primary and secondary volumes. The switch can be either planned (for maintenance) or unplanned (as a result of a primary storage system failure, for example).

This chapter describes the z/OS Basic HyperSwap functions. It provides a short overview and describes some of the sequences of HyperSwap operations. ...

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