1. A data storage system configured to write data supplied from a host to data storage in accordance with write I/O operations of owning applications, comprising: a workload manager configured to direct the processing of supplied data in accordance with a write I/O of one of said owning applications, configured to provide service workload identification for describing said write I/O, said service workload identification comprising at least a class of service defined for said owning application by said host; at least one storage subsystem configured to add said service workload identification to record set information for said data, and a journal management system configured to store information from said record set information in a journal, including said service workload identification.