Patent ID: 9081754
Filing Date: 2015-07-14
Classification: G06F

Abstract:
1. A method for cascaded replication using a splitter, the method comprising: intercepting an input/output (IO) by a first splitter at a first site; splitting the IO by the first splitter at the first site to both a first volume at the first site and a first data protection appliance (DPA) at the first site; forwarding the IO from the first DPA at the first site to a second DPA at a second site; receiving the IO at the second DPA at the second site; intercepting the IO by a second splitter at the second site; splitting the IO by the second splitter at the second site to both a second volume at the second site, represented as a plurality of volume instances, and the second DPA at the second site by splitting the IO to a first volume instance of the second volume in a first consistency group with the first volume, to a second volume instance of the second volume in a second consistency group with the third volume, and to the second DPA; forwarding the IO from the second DPA at the second site for cascaded replication to a third DPA at a third site; receiving the IO at the third DPA at the third site; and processing the IO to a third volume at the third site.