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:
Oct. 25, 2022
Filed:
Sep. 30, 2020
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Michael Barber, Pearland, TX (US);
Yaron Dar, Sudbury, MA (US);
Michael E. Specht, Bolton, MA (US);
Arieh Don, Newton, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Snapshots are created on replicated storage systems Rand Rin a manner resulting in identical snapshots being generated on Rand R. In response to an instruction to create a snapshot on a storage system (Rand/or R), command-phase write operations (CWOs) are held and data-phase write operations (DWOs) are completed on the storage system before the snapshot is created. Determining that DWOs includes querying processes, and using information, available on the storage system, by which a state of a write operation—e.g., whether the write operation is a DWO and when the DWO completes—may be determined. A CWO queue may be maintained on the storage system for tracking the status of CWOs. A DWO queue may be maintained on the storage system for tracking DWOs, to determine DWOs when the snapshot is created, and track their processing, including when they are completed.