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. 07, 2018
Filed:
Jan. 25, 2016
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Scott C. Auchmoody, Irvine, CA (US);
Scott Ogata, Lake Forest, CA (US);
EMC IP HOLDING COMPANY LLC, Hopkinton, MA (US);
Abstract
In one example method, a hash space is identified that includes hashes that each point to a respective piece of data in the customer data set. A first hash is selected using a sub sample ratio, and the first hash is checked to determine if the first hash points to data previously observed in an associated backup stream. If the first hash points to data not previously observed in the associated backup stream, the number of data pieces to which the first hash points are recorded, and if the first hash points to data previously observed in the associated backup stream, a second hash is selected using the sub sample ratio. The method can be repeated until the entire hash space has been sampled. The required storage capacity is calculated using the sub sample ratio and a sum of the recorded number of data pieces.