Patent ID: 7668810

Claim:
A data storage system, comprising: (A) data storage configured to store a plurality of source data storage volumes; (B) data storage configured to store a plurality of target data storage volumes; and (C) data storage control comprising at least one processor configured to: (1) respond to a separately initiated creation of a restriction of a copy operation to a plurality of source data storage volumes, said restriction based on said copy operation to establish a consistency group, said copy operation conducted between at least one said source data storage volume and at least one said target data storage volume; (2) select a source data storage volume from said plurality of source data storage volumes to which said restriction applies as a verification source data storage volume to verify whether said restriction remains in place; and (3) respond to a verification request to first employ said verification source data storage volume to verify that said restriction remains in place with respect to said verification source data storage volume, by: (i) if said restriction remains in place at said verification source data storage volume, providing a message verifying said restriction remains in place, and allowing a reset of said restriction; or (ii) if said restriction does not remains in place at said verification source data storage volume, providing a message verifying said restriction does not remain in place, and not allowing a reset of said restriction.