Global Mirror Whitepaper

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Executive Summary

Global Mirror (Asynchronous PPRC) is a two-site unlimited distance data replication solution for both System z and Open Systems data. IBM's Global Mirror Solution addresses customer requirements for a long distance (typically over 300km) storage based data replication solution for both Open systems and System z data that scales and provides cross volume/cross storage subsystem data integrity/data consistency. Before examining in detail the architecture and operation of Global Mirror, it is helpful to first review the design objectives that guided the development of this solution. The paper provides some background on how the design objectives influenced the development of Global Mirror.

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