Buffered disk unit and method of transferring data therein

Details Buffered disk unit and method of transferring data therein Buffered disk unit and method of transferring data therein

1990-09-10

1993-02-16

Fleming, Michael R.

Boots, shoes, and leggings

395275, 3642362, 3642386, 364239, 3642397, 364251, 364252, 364DIG1, 3649263, 36492692, 3649393, 3649521, 3649591, 364960, 364DIG2, G06F 1314

Patent

active

051877783

ABSTRACT:
Buffers are separately provided for a region for non-sequential transfer and for a region for sequential transfer in each one of the disk units. A director sends a message to inform at least one of the disk units whether transfer of data the respective disk units are to make is sequential or non-sequential. When the disk unit receives a non-sequential transfer request, it uses the buffer region for non-sequential transfer to transfer data requested by the director and when it receives a sequential transfer request, it uses a plurality of buffer regions for the sequential transfer. Thus, data transfer is performed between a host device and that disk unit.

REFERENCES:
patent: 4454595 (1984-06-01), Cage
patent: 4476526 (1984-10-01), Dodd
patent: 4593354 (1986-06-01), Ushiro
patent: 4607328 (1986-08-01), Furukawa et al.
patent: 4667286 (1987-05-01), Young et al.
patent: 4800483 (1989-01-01), Yamamoto et al.
patent: 5056010 (1991-10-01), Huang

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