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:
Dec. 29, 2009
Filed:
Jul. 29, 2005
Anthony Arthur Stafford, Sandhurst, GB;
Norman Allen Abramovitz, Cupertino, CA (US);
Thomas Egan, Sunnyvale, CA (US);
Jenlong Wang, Los Altos, CA (US);
Cheng-mu Wen, San Jose, CA (US);
Juntse Chen, Milpitas, CA (US);
Thomas Rex Bosworth, Jacksonville, FL (US);
Steven Bundy Wahl, Arvada, CO (US);
Bradley David Musolff, Lafayette, CO (US);
Anthony Arthur Stafford, Sandhurst, GB;
Norman Allen Abramovitz, Cupertino, CA (US);
Thomas Egan, Sunnyvale, CA (US);
Jenlong Wang, Los Altos, CA (US);
Cheng-Mu Wen, San Jose, CA (US);
Juntse Chen, Milpitas, CA (US);
Thomas Rex Bosworth, Jacksonville, FL (US);
Steven Bundy Wahl, Arvada, CO (US);
Bradley David Musolff, Lafayette, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Method and apparatus for data migration are described herein. In one embodiment, in response to data received from an application to be written to a first storage volume, the data is written to the first storage volume and a second storage volume substantially concurrently. When the first and second storage volumes are synchronized, a switchover is performed from the first storage volume to the second storage volume, such that subsequent data received from the application is written to the second storage volume, where writing the data to the first and second storage volumes and the switchover are performed without knowledge of the application. Other methods and apparatuses are also described.