System and method for allocating a write request on the same cyl

Details System and method for allocating a write request on the same cyl System and method for allocating a write request on the same cyl

1991-11-15

1997-12-09

Chan, Eddie P.

395439, 395412, 395872, G06F 1210, G06F 1200

Patent

active

056969210

ABSTRACT:
A rotating memory system (e.g. a disk memory) in which a write request is allocated a physical block preferentially on the cylinder on which read/write heads are currently located. This reduces the amount of head movement and hence speeds up the access time. A block map is maintained to convert between the logical block numbers used by read and write requests and the physical block numbers which identify the physical locations of the blocks in the memory.

REFERENCES:
patent: 5065354 (1991-11-01), Jons et al.
patent: 5146571 (1992-09-01), Logan
patent: 5179684 (1993-01-01), Tohchi et al.
patent: 5210716 (1993-05-01), Takada

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