Patent ID: 8726066

Claim:
A system for data replication, the system comprising: a first site comprising: an application; an image; and a journal based replication appliance; a splitter; a second site comprising: a second journal based replication appliance; a journal; an image and computer-executable logic operating in memory; wherein the computer-executable logic is configured for execution of: enabling the second site to receive I/O from the first site; wherein the second site stores the I/O in the journal until transferring the I/O to the image; regulating, at the first site, the application by delaying acknowledgements of I/O requests sent from the application to the image on the first site; wherein I/O requests of the application are intercepted by the splitter; wherein the regulating includes slowing acknowledgements sent from the splitter to the application to reduce differences between the image on the first site and the image on the second site; wherein the application waits for acknowledgement of I/O sent to the image; controlling a size of a do stream in the journal on the second site by slowing a response of the splitter to the application.