1. A method of operating a physical archive cluster instance, the cluster instance comprising a redundant array of independent nodes, wherein each node comprises a processor, a data store coupled to the processor, and a local file system, and an application instance stored in the data store and executed by the processor, the method comprising: associating one or more tenants with the archive cluster; logically partitioning the archive cluster into a set of one or more namespaces, wherein one or more namespaces are associated with a given tenant, and wherein a namespace comprises a collection of data objects and has associated therewith a private file system with respect to other namespaces in the set of namespaces; and selectively configuring a namespace associated with a given tenant without affecting a configuration of at least one other namespace in the set of namespaces.