DASD cache block staging

Details DASD cache block staging DASD cache block staging

1983-07-01

1986-07-29

Thomas, James D.

Boots, shoes, and leggings

G06F 1200, G06F 1212, G06F 1300

Patent

active

046033807

ABSTRACT:
A method for Direct (DASD) cache management that reduces the volume of data transfer between DASD and cache while avoiding the complexity of managing variable length records in the cache. This is achieved by always choosing the starting point for staging a record to be at the start of the missing record and, at the same time, allocating and managing cache space in fixed length blocks. The method steps require staging records, starting with the requested record and continuing until either the cache block is full, the end of track is reached, or a record already in the cache is encountered.

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