Method and system for a high-reliable disk system

Details Method and system for a high-reliable disk system Method and system for a high-reliable disk system

1992-12-21

1996-12-31

Nguyen, Hoa T.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 54, 39518204, G06F 1100

Patent

active

055902723

ABSTRACT:
A disk controller itself performs the serial inspection process in the following way. It divides a track into a current track group directly available for an external computer and a spare track group available for the disk controller independently of the external computer before registering the groups in it. It also automatically selects a track available in the spare track group as an alternative track. It further copies to the alternative track data recorded on a current track to be inspected. In turn, the disk controller writes a test pattern on the current track. With this, it detects a defect position on a surface of a recording medium of the current track. It also registers the defect position detected on the surface of the recording medium to the current track. It further copies the data having been copied on the alternative track to the current track.

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patent: 4984230 (1991-01-01), Satoh et al.
patent: 5084789 (1992-01-01), Kamo et al.
patent: 5249187 (1993-09-01), Bruekert et al.
patent: 5249279 (1993-09-01), Schmenk et al.
patent: 5253256 (1993-10-01), Oyama et al.
"Maintaining IBM Storage Subsystem Media," IBM's Manual GC 26-4495-02, pp. 102-107. (provided in English).
"Storage Subsystem Library--IBM 9340 Direct Access Storage Subsystems Reference," IBM's Manual GC 26-4647-00, pp. 11 and 79-84. (provided in English).

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