Methods And Computer Program Products For Defing Synchronous Replication Devices In A Subchannel Set Other Than Subchannel Set Zero

摘要

Exemplary embodiments of the present invention define PPRC devices within subchannel sets other than subchannel set zero. Further, for all PPRC paired n devices an additional N/2 PPRC primary device numbers and subchannels are provided within subchannel set zero by moving PPRC secondary devices to any subchannel set other than subchannel set zero.