SUNNYVALE, Calif. — Network Appliance, which operates a major facility in Research Triangle Park, N.C., is acquiring Topio, a software firm, for $160 million in cash.

Topio, which is privately held, is based in Santa Clara, Calif. It focuses on storage and server software designed to help customers replicate, recover, and protect data regardless of distance of underlying infrastructure.

Topio was already a strategic partner with NetApp.

Network Appliance: www.netapp.com