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:
May. 04, 2021
Filed:
Oct. 30, 2019
Dell Products L.p., Round Rock, TX (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A method is disclosed for destaging data to a storage device set that is arranged to maintain M replicas of the data, the storage device set having M primary storage devices and N secondary storage devices, the method comprising: detecting a destage event; and in response to the destage event, destaging the data item that is stored in a journal, the destaging including: issuing M primary write requests for storing the data item, each of the M primary write requests being directed to a different one of the M primary storage devices; in response to detecting that L of the primary write requests have failed, issuing L secondary write requests for storing the data item, each of the L secondary write requests being directed to a different secondary storage device; updating a bitmap to identify all primary and secondary storage devices where the data item has been stored.