Patent attributes
A computer-implemented method for duplexing data from multiple files systems onto a shared tape is disclosed. The computer-implemented method includes receiving a unique identifier of a first tape image written to a primary storage device of a first client system. The computer-implemented method further includes determining that a position of a first end-of-data marker on the first tape image differs from a position of a second end-of-data marker on a tape corresponding to the unique identifier of the first tape image. Responsive to determining that the position of the first end-of-data marker on the first tape image differs from the position of the second end-of-data marker on the tape corresponding to the unique identifier of the first tape image, the computer-implemented method further includes copying a difference in data between the second end-of-data marker on the tape and be first end-of-data marker on the first tape image to the tape.
