Tape drive that supports update-in-place

Details Tape drive that supports update-in-place Tape drive that supports update-in-place

2007-01-23

2007-01-23

Tzeng, Fred F. (Department: 2627)

Dynamic magnetic information storage or retrieval

Record editing

C360S072200

Reexamination Certificate

active

11026079

ABSTRACT:
A method in a data processing system is disclosed for permitting update-in-place in a tape drive. Data in a particular record in a tape that is mounted on the tape drive is modified. The particular record is located in a particular one of multiple different tracks in the tape. A first end-of-data mark is written after the modified data. Data in the particular one of the different tracks that is located after the first end-of-data mark is invalidated. All remaining data in all others of the tracks remain valid after the first end-of-data mark is written.

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