Magnetic tape apparatus that duplicates data and stores the...

Details Magnetic tape apparatus that duplicates data and stores the... Magnetic tape apparatus that duplicates data and stores the...

2005-09-06

2005-09-06

Young, W. R. (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

C360S070000, C360S072200

Reexamination Certificate

active

06940666

ABSTRACT:
There is provided a magnetic tape apparatus which can easily and rapidly restore data and has improved availability. The magnetic tape apparatus includes a plurality of magnetic tape drives, and a control unit for reading and writing information from/in the magnetic tape drives by commands from a host computer. The control unit has a function for storing the same data in the plurality of magnetic tape drives while duplicating the data. The control unit includes a positioning unit for, when the duplicated data is read from one magnetic tape drive to complete the read, performing positioning such that a read position of another magnetic tape drive in which the same data is stored is advanced by a length corresponding to an amount of data read from one magnetic tape drive, and a read continuing unit for continuing read of data from the other magnetic tape drive when data is unsuccessfully read from one magnetic tape drive.

REFERENCES:
patent: 3805284 (1974-04-01), Coon et al.
patent: 5566316 (1996-10-01), Fechner et al.
patent: 6076142 (2000-06-01), Corrington et al.
patent: 6138201 (2000-10-01), Rebalski
patent: 2001/0018729 (2001-08-01), Johnson
patent: 3-253933 (1991-11-01), None
patent: 3-259321 (1991-11-01), None
patent: 9-237163 (1997-09-01), None

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