1. In a computing environment having a cluster of servers and a plurality of storage devices, a method of operation, comprising: a first of said cluster of servers having a need to write a first version of a unit of coherent data into said plurality of storage devices determining whether a valid second version of the unit of coherent data is replicated on a second of the said cluster of servers as a result of a preceding delegated write operation; and the first server conditionally replicating the first version of the unit of coherent data on a selected one of said second and a third of said cluster of servers, based at least in part on the result of said determination, to delegate to the selected one of said second and third servers, the writing of the first version of the unit of coherent data into the plurality of storage devices.