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. 22, 2014
Filed:
Mar. 19, 2010
Sujal M. Patel, Seattle, WA (US);
Paul A. Mikesell, Seattle, WA (US);
Darren P. Schack, Seattle, WA (US);
Sujal M. Patel, Seattle, WA (US);
Paul A. Mikesell, Seattle, WA (US);
Darren P. Schack, Seattle, WA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A distributed file system enables the intelligent storing and retrieval of files among a plurality of storage units. The distributed file system utilizes a metadata data structure to track and manage detailed information about each file, including, for example, the device and block locations of the file's data blocks, to permit different levels of replication and/or redundancy. The distributed file system includes a switch to receive a read request for a file and to send the read request to one of the storage units. Each of the plurality of storage units is operable to monitor access to the file, such that a block cache module is operable to perform a scalable number of packet read aheads, wherein the scalable number is based on at least a current read rate and a current latency of a link to access the at least one file.