The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 1996
Filed:
May. 11, 1994
Thomas R Engelmann, Los Gatos, CA (US);
Kevin F Smith, San Jose, CA (US);
Aare Onton, Saratoga, CA (US);
Chia-Hon Chien, Saratoga, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Apparatus and method for operating a data processing system (10) having a data processor (12), a disk data storage subsystem (14), and a disk manager (16). The method includes the steps of (a) partitioning the disk data storage system into multiple partitions including a first partition (28) and a second partition (30); (b) managing at least the first partition as a log-structured file system (LSFS) for storing segments comprised of active data units, for example logical tracks, each having, when stored, an access activity value that exceeds a first predetermined threshold; and (c) storing, within the second partition, segments comprised of inactive data units each having an access activity value, when stored, that is less than the first predetermined threshold.