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:
Jun. 12, 2012
Filed:
Jan. 03, 2008
Kenneth W. Boyd, Tucson, AZ (US);
Kenneth F. Day, Iii, Tucson, AZ (US);
Amiram Hayardeny, Beijing, CN;
Michael E. Factor, Haifa, IL;
John J. Wolfgang, Midlothian, VA (US);
Kenneth W. Boyd, Tucson, AZ (US);
Kenneth F. Day, III, Tucson, AZ (US);
Amiram Hayardeny, Beijing, CN;
Michael E. Factor, Haifa, IL;
John J. Wolfgang, Midlothian, VA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and method are disclosed for a read-before-write storage controller instruction. A sequencer receives an atomic read-before-write instruction comprising new data, a target address for the new data, and an undo log address. An I/O unit reads old data from the target address, writes the old data and the target address to the undo log address, and writes the new data to the target address as directed by the sequencer.