Worm magnetic storage device
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United States of America Patent
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Feb 6, 2001
Grant Date -
N/A
app pub date -
Jan 2, 1998
filing date -
Jan 2, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for operating a magnetic disk storage device in read/write and read-only modes. A control program in a system cache memory receives write requests for transferring data to a logical volume. The control program determines whether the write request is directed to a track that is in a read/write or read-only operating mode. Only requests to tracks having a read/write operating mode are enabled to continue. A system administrator or user controls the operating modes for each track in the disk operating system.
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