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:
Jun. 09, 2020
Filed:
Nov. 16, 2018
International Business Machines Corporation, Armonk, NY (US);
Niall J. McShane, Arlington Heights, IL (US);
Jason K. Resch, Chicago, IL (US);
PURE STORAGE, INC., Mountain View, CA (US);
Abstract
Methods for use in a dispersed storage network (DSN) to retrieve encoded data from memory device of an impaired storage unit. In various embodiments, a computing device of the DSN issues requests to a plurality of storage units, including the impaired storage unit, to recover at least a decode threshold number of encoded data slices of a set of encoded data slices. When the impaired storage unit determines that it is not able to quickly retrieve the requested data slice for provision to the computing device, the impaired storage unit promptly issues a quasi-error response instead. In response to receiving less than the decode threshold number of encoded data slices and a quasi-error response, the computing device determines to issue another slice request(s) to another storage unit(s) and/or issue a continue request instructing the impaired storage unit to continue processing the request to recover the data slice stored therein.