Data compression method and structure for a direct access storag

Details Data compression method and structure for a direct access storag Data compression method and structure for a direct access storag

1995-06-06

1997-04-22

Kulik, Paul V.

39549701, 39549702, 39549704, 395612, G06F 1200, G06F 1730

Patent

active

056237014

ABSTRACT:
A data compression method and compression data structure are provided for a direct access storage device (DASD). The DASD is segmented into a plurality of compression groups. Each of the compression groups has a fixed logical size. A directory table is written within each of the compression groups. Each compression group has at least one compressed data region on which compressed data can be written and an exception region on which compressed data exceptions can be written. The compressed data exceptions include updated compressed data which exceeds an original storage space for corresponding original compressed data.

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