Because Dell Unity has a single-enclosure, two-storage-processor architecture with no concept of designated file hardware, file data is served through virtual file servers known as NAS servers, which may reside on either storage processor. A NAS server, which is required before creating file systems, allows for basic multi-tenancy in that each contains its own distinct set of configuration information and file interfaces. Because each NAS server is logically separate, clients of one NAS server cannot access data on another NAS server and conversely. Each NAS server may contain up to 50 production and 10 backup interfaces and a variety of configuration information including naming services, sharing protocols, Microsoft Active Directory® domain settings, UNIX directory service, user mapping configuration, data protection settings and more. Once a NAS server with the appropriate protocol configuration exists, administrators can create file systems and leverage many of their advanced capabilities available on Dell Unity storage.