Bounding defective regions of a tape storage medium
AssigneeQuantum Corporation
InventorsDwayne Edling, Charles Klomp
Life of this patent
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Abstract
Systems and methods for storing data on a tape medium and coping with defective regions on the tape medium are provided. The method includes: writing a plurality of envelopes of data onto the tape medium, each envelope of data comprising a plurality of blocks of data; detecting a defective region of the tape medium; writing a boundary start field after the defective region, the boundary start field indicating that the defective region has been passed; and writing a boundary end field before the defective region of the tape medium, the boundary end field indicating that the defective region follows the boundary end field.
Claims30
A method of storing data on a tape medium, comprising:
- writing a plurality of envelopes of data onto the tape medium, each envelope of data comprising a plurality of blocks of data;
- detecting a defective region of the tape medium;
- writing a boundary start field after the defective region, the boundary start field indicating that the defective region has been passed;
- and
- writing a boundary end field before the defective region of the tape medium, the boundary end field indicating that the defective region follows the boundary end field.
A tape medium for storing data, the data comprising:
- a plurality of envelopes of data, each envelope of data comprising a plurality of blocks of data;
- a boundary end field positioned sequentially immediately before a defective region of the tape medium, the boundary end field comprising information indicating to a controller that a defective region follows the boundary end field;
- and
- a boundary start field positioned sequentially immediately after the defective region, the boundary start field indicating to the controller that the defective region has been passed.
A tape storage system for storing data on a tape medium, comprising:
- a data transducer for writing data onto the tape medium;
- a motor for translating the tape medium across the data transducer;
- and
- a controller for controlling the data transducer and the motor such that the tape storage system writes a plurality of envelopes of data onto the tape medium, each envelope of data comprising a plurality of blocks of data, and further such that when a defective region of the tape medium is detected, a boundary start field is written onto the tape medium after the defective region, the boundary start field indicating that the defective region has been passed, and a boundary end field is written before the defective region of the tape medium, the boundary end field indicating that the defective region follows the boundary end field.
Dependencies are inferred from the claim text.