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:
Jan. 29, 2019
Filed:
Jun. 25, 2015
Dell Products, Lp, Round Rock, TX (US);
Damon Hsu-Hung, Sudbury, MA (US);
Dell Products, LP, Round Rock, TX (US);
Abstract
Example embodiments respond to input/output (I/O) requests to a storage stack having a hierarchy of layers. In one such embodiment, responsive to an I/O request for data from a higher layer of the stack to a lower of the stack in hierarchy order, a first help response is generated at the lower layer and sent to the higher layer to recover the data. In turn, at the higher layer, it is determined whether a recover mechanism can fulfill the I/O request and, if not, a second help response is generated and sent to a next higher layer in the hierarchy. At the next higher layer, it is determined whether a recovery mechanism can fulfill the I/O request and, if not, a third help response is generated and sent to an even next higher layer in the hierarchy.