Iomega 35963 StorCenter px4-300d 4 Bay (2 x 1 TB) 2TB Server Class Series Network Storage Server Class hard drives are used to ensure higher reliability and performance. Data Replication / Device to Device Data Copy Jobs: iSCSI target provides block-level access for the most efficient storage utilization. It can be used in parallel with file-level storage access via CIFS/NFS. Includes support for SCSI-3 persistent reservations. Powerful Backup Functionality Total Data Protection: Native security support, Encrypted Volume, User Quotas and RSA BSAFE 3 Year Limited Warranty with product registration. Additional warranty options available. Virtualization, certified for Citrix XenServer 5.6, Windows Server 2003, Windows Server 2008, and Windows Server 2008 R2, VMware vSphere 5.0 which makes Iomega the most cost-effective solution for server virtualization Video Surveillance Camera: Built in support for up to 10 UPnP as will as hosting and software support compatibility