Patent ID: 7979647

Claim:
A method of storing data from at least first and second data sources using a single secondary storage device, the method comprising: emulating at least a first secondary storage device and a second secondary storage device using the single secondary storage device, receiving first data from the first data source using the emulated first secondary storage device and tagging the received first data with a unique identifier of the first data source, receiving second data from the second data source using the emulated second secondary storage device and tagging the received second data with a unique identifier of the second data source, storing the tagged first and second data on a storage medium using the single secondary storage device, identifying data packets tagged with the unique identifier of at least one of the first data source or the second data source in a sequence of data packets stored on a removable storage medium, wherein the unique identifier of the at least one of the first data source or the second data source comprises a world wide name (WWN), and replacing at least one of the first data source or the second data source by a replacement data source and mapping the unique identifier of the at least one of the first data source or the second data source to the unique identifier of the replacement data source for restoring the identified data packets to the replacement data source.