QNAP TS-469U-RP 4-Bay NAS, 1U, SATA6Gbps, USB 3.0 Centralized Storage, Backup, and File Sharing for Business NAS, iSCSI/ IP-SAN Storage Combo Solution for Server Virtualization Private Cloud Storage for Ease of Deployment Exceptional Performance: 221.8 MB/sec Reading, 220.8 MB/sec Writing