ALEXANDRIA, Va., April 15 -- United States Patent no. 12,602,401, issued on April 14, was assigned to NetApp Inc. (San Jose, Calif.).

"Non-disruptive transition to synchronous replication state" was invented by Akhil Kaushik (Bangalore, India), Anoop Chakkalakkal Vijayan (Karnataka, India) and Preetham Kudgi Shenoy (Karnataka, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are provided for transitioning a first storage object and a second storage object from an asynchronous replication state to a synchronous replication state. Metadata operations are logged into a metadata log. Dirty data, modified by data operations executed upon the first storage object, are tracked using a dirty region lo...