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:
Oct. 26, 2010
Filed:
Feb. 17, 2006
Kenneth W. Boyd, Tucson, AZ (US);
Kenneth F. Day, Iii, Tucson, AZ (US);
Stephen F. Edel, San Jose, CA (US);
John J Wolfgang, Winston-Salem, NC (US);
Harry M. Yudenfriend, Poughkeepsie, NY (US);
Kenneth W. Boyd, Tucson, AZ (US);
Kenneth F. Day, III, Tucson, AZ (US);
Stephen F. Edel, San Jose, CA (US);
John J Wolfgang, Winston-Salem, NC (US);
Harry M. Yudenfriend, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and method are disclosed for switching a volume address association in a point-in-time copy relationship. A copy module creates a point-in-time copy structure of a source volume at a target volume. A migration module copies data from the source volume to the target volume. A detection module detects data corruption in the source volume. A switch module switches a logical volume address from a source volume address of the source volume to a target volume address of the target volume in response to detecting the data corruption, redirecting data reads and writes to the target volume. In one embodiment, a tracking module tracks a current target volume copy of source volume data and redirects an access for source volume data without the current target volume copy to the source volume.