Patent ID: 8548949
Filing Date: 2013-10-01
Classification: G06F

Abstract:
1. A method for dynamic consistency group formation, the method comprising: creating a snapshot of first data stored on a source storage system, wherein the snapshot is a logical copy of the first data stored on the source storage system with respect to data content and data structure; storing the snapshot on a target storage system; copying the first data represented by the snapshot from the source storage system to the target storage system; detecting one or more write operations affecting data on the source storage system while copying the first data; detecting one or more collisions affecting the first data on the source storage system, wherein a collision occurs whenever the one or more write operations affect at least a portion of the first data prior to the at least a portion of the first data being written to the target storage system; setting a consistency group interval, wherein the consistency group interval represents an interval duration between successive snapshot create-and-copy events; altering the consistency group interval to minimize collisions affecting data on the source storage system; and measuring a latency of one or more performed operations on at least one of the storage systems, wherein the latency is a period of time required to perform the one or more operations; wherein the consistency group interval is altered to ensure that the latency does not exceed a maximum latency.