Rotary head data storage and retrieval system and method for data verification
AssigneeOracle International Corporation
InventorsCarl Madison, Timothy C. Ostwald
Life of this patent
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Abstract
A data storage and retrieval system includes a head carriage unit adapted for rotational motion and having multiple heads disposed at a working surface. The system also includes a tape drive unit configured to move a tape media past the working surface of the head carriage unit, the tape media having a width approximately equal to a width of the working surface. As the head carriage unit rotates and the tape moves past the working surface, a first head is configured to write a data track to the tape and a second head is configured to thereafter read the data track, where data read by the second head is for use in verifying data integrity and performing error correction.
Claims18
A data storage and retrieval system comprising:
- a head carriage unit having a plurality of optical heads disposed at a working surface, the head carriage unit adapted for rotational motion about a point and each of the plurality of heads configured for radial movement at the working surface relative to the point;
- and
- a tape drive unit configured to move an optical tape media past the working surface of the head carriage unit;
- wherein, when the head carriage unit rotates and the tape moves past the working surface, a first one of the plurality of optical heads is configured to write a data track to the tape and a second one of the plurality of optical heads is configured to thereafter read the data track, wherein data read by the second one of the plurality of heads is used in verifying data integrity and performing error correction.
A data storage and retrieval system comprising:
- a head carriage unit having a plurality of heads disposed at a working surface, the head carriage unit adapted for rotational motion about a point and each of the plurality of heads configured for radial movement at the working surface relative to the point;
- and
- a tape drive unit configured to move a tape media past the working surface of the head carriage unit, the tape media having a width approximately equal to a width of the working surface of the head carriage unit;
- wherein, when the head carriage unit rotates and the tape moves past the working surface, a first one of the plurality of heads is configured to write a data track to the tape and a second one of the plurality of heads is configured to thereafter read the data track, wherein data read by the second one of the plurality of heads is used in verifying data integrity and performing error correction.
A data storage and retrieval method comprising:
- rotating a head carriage unit about a point, the head carriage unit having a plurality of optical heads disposed at a working surface;
- moving an optical tape media past the working surface of the head carriage unit;
- writing a data track to the tape using a first one of the plurality of optical heads as the head carriage unit rotates and the tape moves past the working surface;
- and
- reading the data track using a second one of the plurality of optical heads as the head carriage unit rotates and the tape moves past the working surface, wherein data read by the second one of the plurality of heads is for use in data integrity verification and error correction;
- wherein writing and/or reading comprises moving the first and/or second optical head radially relative to the point.
Dependencies are inferred from the claim text.