Synology RackStation 4-Bay - Diskless 1U NAS Rackmount with Redundant Power Supply Network Attached Storage (RS812RP+) Scale up to 8 Drives with Synology RX410 Running on Synology DiskStation Manager (DSM) 2 LAN with Failover and Link Aggregation Support Fast Motherboard Swapping Design CPU Passive Cooling Technology & System Fan Redundancy Windows ADS and ACL Support VMware/Citrix/Hyper-V Compliance