Detection of sequential data stream

Details Detection of sequential data stream Detection of sequential data stream

1982-11-15

1985-08-20

Smith, Jerry

Boots, shoes, and leggings

G06F 900

Patent

active

045368368

ABSTRACT:
A method for detection of a sequential data stream which can be performed in a data storge subsystem without host computer intervention is disclosed featuring examination of the channel program processed during a read operation for signals indicative that the data is not part of a sequential data stream, for example, embedded seek instructions. If a particular channel program for does not contain such indications, the successive record or records may then be staged to a faster access memory device such as a solid-state cache. The invention is described in a plug-compatible, software-transparent configuration.

REFERENCES:
patent: 4157587 (1979-06-01), Joyce et al.
patent: 4370710 (1983-01-01), Koft
patent: 4371927 (1983-02-01), Wilhite et al.
patent: 4429363 (1984-01-01), Duke
B. T. Bennett et al., "Improving Performance of Buffered DASD To Which Some References are Sequential", IBM Technical Disclosure Bulletin, vol. 24, No. 3, Aug., 1981.

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