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. 29, 2014
Filed:
Dec. 19, 2007
Michael E. Factor, Haifa, IL;
Shachar Fienblit, Ein Ayala, IL;
Guy Laden, Jaffa, IL;
Dean Har'el Lorenz, Haifa, IL;
Shlomit Sarah Pinter, Haifa, IL;
Paula Kim Ta-shma, Tel-Aviv-Jaffa, IL;
Michael E. Factor, Haifa, IL;
Shachar Fienblit, Ein Ayala, IL;
Guy Laden, Jaffa, IL;
Dean Har'el Lorenz, Haifa, IL;
Shlomit Sarah Pinter, Haifa, IL;
Paula Kim Ta-Shma, Tel-Aviv-Jaffa, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for managing data, the method includes: providing a write-back cache unit coupled to at least one storage unit; receiving a request to write a new data version to a certain cache data allocation unit; determining, in response to a data storage policy, whether to overwrite a cached data version being cached in the certain cache data allocation unit or to perform a destage of the cached data version to a first storage unit before writing the new data version to the certain cache allocation unit; receiving a request to read a data version that corresponds to a certain point in time and scanning a first data structure representative of write operations and a second data structure representative of revert operations to determine a location of the requested data version.