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:
Mar. 06, 2012
Filed:
Sep. 25, 2008
Yixue Zhu, Sammamish, WA (US);
Robert H. Gerber, Bellevue, WA (US);
Vishal Kathuria, Woodinville, WA (US);
Samuel Hyrum Smith, Redmond, WA (US);
Yixue Zhu, Sammamish, WA (US);
Robert H. Gerber, Bellevue, WA (US);
Vishal Kathuria, Woodinville, WA (US);
Samuel Hyrum Smith, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Methods, systems, and computer-readable media are disclosed for transitioning clones and clone data access maps in response to node or media failure without blocking queries. In a system, a data request interface is configured to receive a query to access data at a storage device. Data management logic is configured to access clone state information of a plurality of clones including clones in a static state and clones in a transitory state. The data management logic is further configured to process the query to access the data according to the dynamic clone data access map, with functional correctness maintained.