Data storage device and data managing method

Details Data storage device and data managing method Data storage device and data managing method

1994-08-31

1996-01-16

Envall, Jr., Roy N.

Excavating

371 402, 395481, 395600, 39549701, G06F 1120

Patent

active

054854750

ABSTRACT:
A data storage device includes a plurality of data disks for storing data in units of data blocks and a parity disk for storing parity data used for restoring data to the data disks. Data blocks on the respective data disks are managed with respect to whether each data block is used for data storage and managed with respect to whether data of each data block is used for computing parity. Each data block which is not used for data storage and is used for computing parity is detected. The parity data are updated based on data in the detected data blocks and the parity data stored to the parity disk corresponding to the detected data blocks.

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patent: 5278838 (1994-01-01), Ng et al.
patent: 5284478 (1994-02-01), Barlow et al.
patent: 5341381 (1994-08-01), Fuller
patent: 5412668 (1995-05-01), Dewey

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