Patent ID: 9665582
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. A non-transitory computer-readable medium having stored thereon program instructions for updating a replica of a target storage volume associated with a plurality of data blocks on an underlying storage volume that underlies the target storage volume, wherein the program instructions, when executed by a data control system, direct the data control system to: responsive to an instruction to update the replica, identify a first group of data blocks of the plurality of data blocks on the underlying storage volume that have changed; identify a second group of data blocks of the first group of data blocks that are live; identify changed data items included in the target storage volume that are associated with the second group of data blocks; initiate an ancillary process on the changed data items; and initiate an update of the replica of the target storage volume with the second group of data blocks.