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. 11, 2012
Filed:
Sep. 28, 2007
Bradford B. Glade, Harvard, MA (US);
Helen S. Raizen, Jamaica Plain, MA (US);
Matthew D. Waxman, Waltham, MA (US);
David W. Harvey, Newton, MA (US);
Michael E. Bappe, Loveland, CO (US);
Bradford B. Glade, Harvard, MA (US);
Helen S. Raizen, Jamaica Plain, MA (US);
Matthew D. Waxman, Waltham, MA (US);
David W. Harvey, Newton, MA (US);
Michael E. Bappe, Loveland, CO (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Technology for minimizing disruptions when host data on a physical volume is encapsulated into a virtualization layer or de-encapsulated is disclosed. Evaluation of a physical volume used as data storage for a virtualization layer before committing to direct access to the physical volume is enabled by preventing direct access before presenting the physical volume directly to the host and by preventing the virtualization layer from moving data on the physical volume while redirecting to the physical volume a first plurality of I/O requests that were directed to the virtualization layer.