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:
Feb. 06, 2024
Filed:
Apr. 22, 2021
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Bhaskar Bora, Shrewsbury, MA (US);
Mark J. Halstead, Holliston, MA (US);
Deepak Vokaliga, Hopkinton, MA (US);
Benjamin Yoder, Chandler, AZ (US);
William R. Stronge, Westford, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Snapshots may be used to implement remote replication, for example, asynchronously, between a first storage system, A1, and a second storage system, A2. A1 may take a first snapshot, SS2, of a logical storage unit, R1. After the snapshot SS2it taken, any dependent write operations associated with SS2may be reconciled, and differences between SS2and the last snapshot for R1, SS1, may be determined and recorded as a difference set. One or more replication instructions for R1 that include the write operations (or data and metadata corresponding thereto) of the difference set may be sent from A1 to A2. A2 may apply the differences to R2, and then take (activate) a snapshot of R2, SS2, which is a replica of SS2. After A2 activates SS2, A2 may send an acknowledgement to A1 indicating that SS2has been activated, and A2 may take a next snapshot of R1.