QNAP TS-879U-RP 2U rackmount with redundant power supply providing data sharing, all-in-one business server features, advanced RAID data protection, built-in iSCSI target service, 256-bit volume-based encryption, and hot-swappable hard drive design. Intel i3-2120 3.3 GHz CPU and 2GB RAM. Supports RAID 0/ 1/ 5/ 6/ 5 Spare/10, JBOD. Do Not Include HDDs. Please check QNAP.com for list of compatible HDDs.