Tape storage device having at least one redundant read data element
AssigneesHewlett Packard Enterprise Development LP, Quantum Corporation
InventorsMike Alan Holmberg, John D. Hampton, Turguy Goker, Robert Brummet, JaeWook Lee
Life of this patent
Estimating the term…
Abstract
A technique includes in a data storage device, sensing a plurality of data streams from a track of storage media as the media moves in a given direction using a plurality of read elements such that at least one of the read elements is redundant. The technique includes combining the data streams to generate a data stream indicating data read from the track.
Claims11
A method comprising:
- in a data storage device, sensing a plurality of data streams from a track of tape storage media as the media moves in a given direction using a plurality of read elements;
- and
- combining the data streams to generate a constructed data stream indicating data read from the track, wherein combining the data streams comprises selecting portions from the data streams containing valid data and being associated with different time segments of the constructed data stream and combining the selected portions to generate the constructed data stream, wherein combining the data streams comprises:
- applying error correction code (ECC)-based detection to the sensed data streams;
- and
- selectively combining the sensed data streams based on a result of the ECC-based detection.
A data storage device, comprising:
- a plurality of read elements arranged to read data from a track of magnetic media shared in common as the media moves in a given direction to generate a plurality of read data streams;
- and
- a read path to apply error correction code (ECC)-based detection to the read data streams and selectively combine the read data streams to provide a composite read data stream indicative of the data read from the track based on a result of the ECC-based detection, wherein combining the read data streams comprises selecting portions from the read data streams containing valid data and being associated with different time segments of the composite data stream and combining the selected portions to generate the composite read data stream.
An article comprising a non-transitory computer readable storage medium to store instructions that when executed by a computer cause the computer to:
- in a data storage device, sense a plurality of data streams from a track of tape storage media as the media moves in a given direction using a plurality of read elements
- select portions from the data streams containing valid data and being associated with different time segments of a constructed data stream;
- apply error correction code (ECC)-based detection to the sensed data streams;
- and
- selectively combine the selected portions to generate the constructed data stream based on a result of the ECC-based detection.
Dependencies are inferred from the claim text.