Patent ID: 8775384

Claim:
A method for generating cross-host consistent checkpoints, for use in disaster recovery systems, comprising: transmitting, at multiple times, write quiesce commands to each of a plurality of enterprise host computers, each quiesce command including a timeout period that is adjusted at each of the multiple times, wherein the host computers are operative to write enterprise data to the source datastores; at each of the multiple times: determining whether acknowledgements indicating that a host has successfully stopped writing enterprise data to the source datastores, have been received from each of the plurality of host computers within the timeout period; if said determining is affirmative, then marking a cross-host checkpoint in a target datastore for the host computers, and reducing the timeout period for the quiesce commands transmitted by said transmitting at the next time, wherein the target datastore is generated by a continuous data protection disaster recovery system to replicate the data in the source datastores; and otherwise, increasing the timeout period for the quiesce commands transmitted by said transmitting at the next time.