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:
Jun. 10, 2014
Filed:
Oct. 18, 2013
Facebook, Inc., Menlo Park, CA (US);
Dhrubajyoti Borthakur, Sunnyvale, CA (US);
Per Brashers, Oakland, CA (US);
Jason Matthew Taylor, Berkeley, CA (US);
Facebook Inc., Menlo Park, CA (US);
Abstract
Fault-tolerant storage is provided using a distributed data storage system that receives input data from clients and divides that data into data blocks for storage. The data blocks are processed using a coding scheme that generates redundant level one error correction blocks (L1EC Blocks). The L1EC blocks enable the reconstruction of one or more damaged or inaccessible data blocks, and the L1EC blocks and the data blocks are divided into distribution sets and stored at a plurality of data storage locations. At each data storage location additional level two error correction blocks (L2EC blocks) are generated that provide local data redundancy. Upon detecting a data disruption event, an inaccessible data storage location is identified and the elements that were stored at the inaccessible data storage location are reconstructed.