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:
Oct. 31, 2017
Filed:
Mar. 31, 2015
Emc Corporation, Hopkinton, MA (US);
Philippe Armangau, Acton, MA (US);
Michael Scheer, Summit, NJ (US);
Ahsan Rashid, Edison, NJ (US);
Rohit K. Chawla, Scotch Plains, NJ (US);
Feng Zhang, Shanghai, CN;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A technique for managing block allocation in data storage systems involve providing multiple ranges of contiguous logical addresses (logical windows) in a logical address space of a file and allocating contiguous ranges of physical addresses (physical windows) in a file system to respective logical windows in response to requests to write data to logical addresses within the logical windows. When allocating blocks from one or more streams, each logical window to which writes are directed is mapped to a respective physical window, and each logical address in the logical window is mapped to a physical address in the physical window.