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:
Apr. 03, 2018
Filed:
Jun. 30, 2016
Emc Corporation, Hopkinton, MA (US);
Alan L. Taylor, Cary, NC (US);
Paul T. McGrath, Raleigh, NC (US);
David Haase, Fuquay Varina, NC (US);
Michael C. Brundage, Cary, NC (US);
Somnath A. Gulve, Morrisville, NC (US);
Michael Paul Wagner, Raleigh, NC (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A technique for managing copy sessions in a data storage system supports active and inactive copy-session states and reclaims memory for inactive copy sessions to reduce their memory footprints. When a copy session transitions from the active state to the inactive state, the copy session persists certain copy-progress data in non-volatile storage and frees structures in memory previously storing that copy-progress data. The inactive copy session continues to run but performs no copying and consumes less memory. When the copy session later transitions back to the active state, the copy session reads the copy-progress data back into memory and resumes copying.