In one example, an apparatus is provided to store data in one or more data storage systems by selecting from among at least a first operating mode and a delta replication operating mode. The apparatus comprises a means for storing data pursuant to the first operating mode and a means for ascertaining a first status of a criterion pertaining to an activity performed by the one or more data storage systems while operating in the first operating mode. The apparatus further comprises a means for detecting a change in the criterion to a second status, and a means for storing data pursuant to the delta replication operating mode in response to the change.