Virtual tape system

Details Virtual tape system Virtual tape system

1998-04-02

2000-05-30

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711 6, 711 4, 395527, 39550045, G06F 1208, G06F 9455

Patent

active

060702249

ABSTRACT:
A method and apparatus for emulating a magnetic tape storage device with a conventional, unmodified magnetic disk storage device. I/O output requests for the emulated magnetic tape storage device are intercepted to determine whether they involve a virtual tape resource that comprises a magnetic disk storage device. Tape requests to such a resource are converted into one or more conventional magnetic disk storage requests to effect an analogous operation.

REFERENCES:
patent: 4775969 (1988-10-01), Osterlund
patent: 4787031 (1988-11-01), Karger et al.
patent: 5239647 (1993-08-01), Anglin et al.
patent: 5297124 (1994-03-01), Plotkin et al.
patent: 5455926 (1995-10-01), Keele et al.
patent: 5475834 (1995-12-01), Anglin et al.
patent: 5506986 (1996-04-01), Healy
patent: 5544347 (1996-08-01), Yanai et al.

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