Patent ID: 8959054
Filing Date: 2015-02-17
Classification: G06F

Abstract:
1. A computer implemented method for continuous data replication, comprising: creating a replication snapshot of a replication image at a replication site at a first time, wherein both the replication snapshot and the replication image are at the replication site, wherein the replication image of the replication site is enabled to replicate a production image at a production site; receiving a write transaction from the production site to be replicated on the replication site; applying the write transaction from the production site to the replication image of the replication site to replicate at the replication site one or more changes to the production image; and adding the write transaction into a first journal data stream at the replication site, wherein the first journal data stream is associated with the replication snapshot of the replication image of the replication site and enables the replication snapshot of the replication image to be rolled to a point in time up to and including the replication image by applying the write transactions in the first journal data stream to the snapshot of the replication image.