US Patent Issued to NetApp on Feb. 24 for "Reducing stable data eviction with synthetic baseline snapshot and eviction state refresh" (California Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,561,281, issued on Feb. 24, was assigned to NetApp Inc. (San Jose, Calif.).

"Reducing stable data eviction with synthetic baseline snapshot and eviction state refresh" was invented by Ajay Pratap Singh Kushwah (San Ramon, Calif.), Ling Zheng (Saratoga, Calif.) and Sharad Jain (Santa Clara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer...