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:
Nov. 20, 2007
Filed:
Jan. 20, 2006
John R. Douceur, Bellevue, WA (US);
Roger P. Wattenhofer, Zurich, CH;
John R. Douceur, Bellevue, WA (US);
Roger P. Wattenhofer, Zurich, CH;
Microsoft Corporation, Redmond, WA (US);
Abstract
File availability in distributed file storage systems is improved by initially placing replicas of a file or other object on different ones of multiple devices using a first process. Subsequently, the placement of the replicas is improved by evaluating whether any replicas of a first file can be swapped with any replicas of a second file without a reduction in the combined file availability of the first and second files, and swapping a replica of the first file with a replica of the second file if the swapping results in no reduction in the combined file availability of the first and second files.