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:
Dec. 08, 2009
Filed:
Jun. 30, 2007
Jean-pierre Bono, Westboro, MA (US);
John M. Hayden, Holliston, MA (US);
Sairam Veeraswamy, Westborough, MA (US);
Uresh K. Vahalia, Newton, MA (US);
Morgan A. Clark, So. Orange, NJ (US);
Sachin Mullick, Natick, MA (US);
Saurabh Godbole, Paud Road, IN;
Jean-Pierre Bono, Westboro, MA (US);
John M. Hayden, Holliston, MA (US);
Sairam Veeraswamy, Westborough, MA (US);
Uresh K. Vahalia, Newton, MA (US);
Morgan A. Clark, So. Orange, NJ (US);
Sachin Mullick, Natick, MA (US);
Saurabh Godbole, Paud Road, IN;
EMC Corporation, Hopkinton, MA (US);
Abstract
A container file system is built on a sparse metavolume for enhanced decoupling of logical storage from physical storage and for providing common supplementary storage services for iSCSI block access and for NFS or CIFS file system access. The container file system contains a production file system or iSCSI LUN and may also contain snapshot copies of the production file system or iSCSI LUN. The container file system manages storage space among the production file system or iSCSI LUN and its snapshot copies, and also improves fault containment. The sparse metavolume provides thin provisioning of the container file system. A slice map indicates whether or not each slice of logical storage in the sparse metavolume is provisioned with an associated configured slice of data storage.