The Adaptec Snap Server 520 combines best-in-class performance with optional capacity expansion that helps you maximize your storage budget. Built on 64-bit AMD Opteron processor architecture, the Snap Server 520 with GuardianOS software provides fast throughput for data protection applications. With legendary Snap Server ease of use and operation, an integrated suite of data protection software, and scalability to 66TB, it is ideal for any size company that needs cost-effective, yet scalable data storage for its growing business. Network Security: Microsoft Active Directory Service (ADS Member Server); Kerberos Authentication v5; Windows NT Domain (member server); File and Folder Access Control List (ACL) Security for Users and Groups; UNIX Network Information Service (NIS) Support; UID/GID mapping between NFS CIFS; Secure Sockets Layer (SSL) v2/v3 128-bit Encryption; Transport Layer Security (TLS) v1; CHAP Authentication (iSCSI target level) Data Protection: Integrated snapshot technology; Optional StorAs