Patent ID: 8725780

Claim:
A system for accessing data on removable media having stored thereon a changeable data set comprising read-write data files and an immutable data set comprising WORM data, the system comprising: a removable media storage system configured to determine whether a host system is configured to enforce Write Once Read Many (WORM) policies, and the host system is communicatively coupled with the removable media storage system to execute a plurality of instructions for enforcing the WORM policies on the immutable data set stored on the removable media, the plurality of instructions executable by the host system to: receive a request to access data on the removable media; allow the access if the request is to write new read-write data files to the changeable data set; allow the access if the request is to any of read, write to, modify, rename and delete existing read-write data files of the changeable data set; allow the access if the request is to read existing WORM data of the immutable data set; allow the access if the request is to write new WORM data of the immutable data set; deny the access if the request is to write to existing WORM data of the immutable data set; deny the access if the request is to rename existing WORM data of the immutable data set; and deny the access if the request is to delete existing WORM data of the immutable data set; wherein the removable media storage system is further configured to grant the host system read-only access to the changeable and immutable data sets in response to determining that the host system is not configured to enforce the WORM policies.