ALEXANDRIA, Va., March 5 -- United States Patent no. 12,242,424, issued on March 4, was assigned to EMC IP Holding Co. LLC (Hopkinton, Mass.).

"Persistent memory tiering supporting fast failover in a deduplicated file system" was invented by Yong Zou (San Jose, Calif.) and Rahul Ugale (Santa Clara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A memory tier including persistent memory (PMEM) devices is established in nodes of a cluster system having a deduplicated file system. At least a portion of metadata generated by the deduplicated file system is persisted to the memory tier. The portion of metadata includes an index of fingerprints corresponding to data segments stored by the deduplicated file ...