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:
Jul. 03, 2018
Filed:
Jun. 22, 2016
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Richard M Stern, Saratoga, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A method of minimizing rebuild times within a large-scale data storage system, such as a RAID array by: maintaining a spare disk for a plurality of disks within a disk array; monitoring the plurality of disks for occurrence of one or more pre-failure indicators; maintaining, for each disk, a count of the occurrences of the pre-failure indicators; comparing the count for each disk to a defined threshold value; and copying the first disk and mirroring write operations to the first disk to the spare disk if the count for the first disk exceeds the threshold. The method switches the copying to the spare disk from the first disk to a second disk if the count for the second disk exceeds the count for the first disk. In this manner, certain predictive information can be used to use the spare disk to reduce RAID rebuild times to near instantaneous periods.