Method and apparatus for reading and writing data in a disk driv

Details Method and apparatus for reading and writing data in a disk driv Method and apparatus for reading and writing data in a disk driv

1995-11-28

1999-02-16

Teska, Kevin J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

395824, 3951832, 369 4433, 369 96, 711202, 711204, 371 102, G06F 306, G06F 1300

Patent

active

058729550

ABSTRACT:
To reduce read and write times for data in a disk drive, the data of a file is rearranged into continuous recording areas on a disk. A file has a host-specified address and a physical address. The physical address corresponds to the recording area on a disk where the file is stored. The host-specified and physical addresses are stored in a conversion table. The controller receives the host-specified address and a command for reading the file. Based on the host-specified address, the controller determines the physical address from the conversion table. Based on the physical address, the controller reads the data from the disk and sends the data to the host. Thereafter, the controller examines the physical address in the conversion table to determine if the data is recorded on a physically continuous recording area on the disk. If not, the data is moved to a physically continuous recording area, and the physical address in the conversion table is updated.

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