Patent ID: 7627687

Claim:
A method, comprising: receiving a data transfer request from a first component at a transmitter module in a continuous data replication system having a production site and a backup site, the production site comprises the transmitter module and a transmitter credit mechanism, the transmitter module is configured to transmit data over a network for replication in the backup site; journaling replication data using a number of journal processing stages; modifying a flow of credits from the transmitter credit mechanism to the first component to reduce or stop data flow to the transmitter module if a high-load is detected at the transmitter module; modifying a flow of credits from a receiver credit mechanism to the transmitter module to reduce or stop data flow to the receiver module if a high-load condition is detected at a receiver module; modifying a flow of credits from a distributor credit mechanism to the receiver module to reduce or stop data flow to the distributor module if a high-load condition is detected at a distributor module; and reducing the number of journal processing stages for replicating data if a high-load condition is detected before activating the transmitter credit mechanism.