1. A composite storage server, comprising: a plurality of distributed storage sites including a mount site, a source copy site and at least one copy target site for executing a host job involving a storage of volume data within the composite storage server; wherein the mount site is operable to communicate a source copy complete message to an immediate copy target site, the source storage complete message being indicative of the source copy site having a complete copy of the volume data; and wherein, based on the source copy complete message, the immediate copy target site is operable to pull the volume data from a peer distributed storage site having a complete copy of the volume data.