Dynamic device reconfiguration having restricted main storage ac

Details Dynamic device reconfiguration having restricted main storage ac Dynamic device reconfiguration having restricted main storage ac

1995-10-16

1996-08-13

Nguyen, Hoa T.

G06F 1100, G06F 1130

Patent

active

055465331

ABSTRACT:
A host computer executes dynamic device reconfiguration to cope with a device error generated while data is being written in a magnetic tape unit. The function of the dynamic device reconfiguration is implemented by a save function, a tape shift instructing function and a rewrite function which are provided by an operating system of the host computer. When the expanded data transferred from the input and output control unit when the error is generated is written in a save area in the main storage area, it is compressed. When the compressed data read from the save area in the main storage for rewriting is transferred to the magnetic tape unit to which a tape has been shifted, it is expanded. In the main storage area, the save area having a size corresponding to that of the compressed data which remains in a buffer memory is reserved.

REFERENCES:
patent: 4562578 (1985-12-01), Odaka et al.
patent: 4611314 (1986-09-01), Ogata et al.
patent: 5155835 (1992-10-01), Belsan
patent: 5247638 (1993-09-01), O'Baenet et al.

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