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. 28, 2020
Filed:
Oct. 22, 2018
Storage system with data integrity verification performed in conjunction with internal data movement
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Nimrod Shani, Herzliya, IL;
Lior Kamran, Rishon LeZion, IL;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A storage system in one embodiment comprises a plurality of storage devices and a storage controller. The storage controller is configured to identify data to be moved internally within the storage system, to compute a fingerprint for the data, and to compare the computed fingerprint to a previously-stored metadata fingerprint for the data. Responsive to the computed fingerprint being consistent with the metadata fingerprint, the data is moved to its new location within the storage system. Responsive to the computed fingerprint being inconsistent with the metadata fingerprint, the data is reconstructed and at least the computing and comparing are repeated utilizing the reconstructed data. The metadata illustratively comprises both a lightweight fingerprint and a hash-based fingerprint, with the lightweight fingerprint being computable using a reduced amount of computational resources relative to that required to compute the hash-based fingerprint, in which case the previously-stored metadata fingerprint compared to the computed fingerprint may comprise a selected one of the lightweight fingerprint and the hash-based fingerprint.