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:
Feb. 20, 1996
Filed:
Mar. 30, 1992
David A Elko, Poughkeepsie, NY (US);
Jeffrey A Frey, Fishkill, NY (US);
Chandrasekaran Mohan, San Jose, CA (US);
Inderpal S Narang, Saratoga, CA (US);
Jeffrey M Nick, Fishkill, NY (US);
Jimmy P Strickland, Saratoga, CA (US);
Michael D Swanson, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A high-speed cache is shared by a plurality of independently-operating data systems in a multi-system data sharing complex. Each data system has access both to the high-speed cache and the lower-speed, secondary storage for obtaining and storing data. Management logic and the high-speed cache assures that a block of data obtained form the cache for entry into the secondary storage will be consistent with the version of the block of data in the shared cache with non-blocking serialization allowing access to a changed version in the cache while castout is being performed. Castout classes are provided to facilitate efficient movement from the shared cache to DASD.