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:
Apr. 06, 2004
Filed:
Mar. 27, 2003
Arieh Don, Newton, MA (US);
Mathieu Gagne, Boston, MA (US);
Kenneth Halligan, Leominster, MA (US);
Ishay Kedem, Brookline, MA (US);
Hana Moreshet, Framingham, MA (US);
Alexandr Veprinsky, Brookline, MA (US);
Natan Vishlitzky, Brookline, MA (US);
Aviram Cohen, Lexington, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method and apparatus for enabling an on-line reconfiguration of striped data in a disk array storage device. A replicated copy of the striped logical device is made in parallel with host operations. A logical device with a new configuration is then substituted for access by the host application even before any data is transferred to locations within the newly configured logical device. Independent processes operating in this disk array storage device reconfigure the data transparently to any host operations while accommodating host I/O requests directed to locations in the new configuration.