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. 04, 2020
Filed:
Aug. 02, 2018
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Mikhail Danilov, Saint Petersburg, RU;
Vladislav Eremeev, Saint Petersburg, RU;
EMC IP HOLDING COMPANY LLC, Hopkinton, MA (US);
Abstract
A universal mechanism is utilized for data rebalancing in a scaled-out data storage cluster. A value (l) representing a number of erasure coded fragments of each data portion that are to be moved to a newly added node can be calculated. Initially, the number of erasure coded fragments moved per data fragment is determined based on the greatest integer that is less than or equal to l and remainders are accumulated. When accumulated reminders equal or exceed l, the number of erasure coded fragments moved per data fragment is determined based on the lowest integer that is greater than or equal to l. A value of accumulated reminders is then decreased by l. Accordingly, system-level imbalances can be avoided and data availability, data robustness, and/or overall system performance can be increased.