Synology RackStation RS2821RP+ 16-Bay 3.5" Diskless 4x1GbE RJ45 (3U Rack),Intel Atom C3538 quad-core 2.1GHz,4GB DDR4,2xUSB3,1xExpansion

High storage capacity NAS in 3U chassis enclosure with 16 drive bays
Support critical workloads with up to 2,200 MB/s read and 1,164 MB/s write performance
Maximize uptime with two redundant power supply units
Scale up to 28 drives with Synology RX1217/RX1217RP
Complete virtualization solution with Synology Virtual Machine Manager
Dynamic iSCSI/NFS storage for VMware, Windows Hyper-V, Citrix, and OpenStack
Maximum IP cameras: 40 (total of 1,200 FPS at 720p, H.264) (includes two free camera licenses; additional cameras require the purchasing of additional licenses)
PCIe 3.0 slot – x8 slot x 1 (4-lane)
Additional Service and Warranty Packages available – ASK your MMT Account Manager for more details.(Service must be purchased with 30 days of the NAS purchase)
This NAS model supports Synology High Availability (SHA)
Model Supports Active Backup for Office365 – Free Software. No Addtional licensing required!
Model requires the additional purchase of a Rail Kit for installation in a Server Rack