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:
Aug. 15, 2017
Filed:
Mar. 18, 2016
Dell Products L.p., Round Rock, TX (US);
Michael J. Klemm, Minnetonka, MN (US);
Joris Johannes Wils, Acton, MA (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
A method may include generating a chain of snapshot point-in-time copies (PITCs) for a virtual volume, the chain comprising one or more reverse PITCs and one active PITC, such that: (i) read operations to a snapshot pointing to a reverse PITC traverse a portion of the one or more reverse PITCs in a direction of the chain from the reverse PITC pointed to by the snapshot to the active PITC in order to return data responsive to the read operations to the snapshot; and (ii) read operations to the virtual volume traverse only the active PITC in order to return data responsive to the read operations to the virtual volume.