Synology DiskStation 5-Bay (5x 3TB NAS Drives) Network Attached Storage (NAS) DS1515+ 5300 Four Gigabit LAN Ports with Failover and Link Aggregation Support Scale up to 15 drives with Synology DX513 Expandable RAM Module (Up to 6GB) VMware , Citrix , Microsoft Hyper-V Certified High Availability and SSD Read/Write Cache Support Running on Synology Disk Station Manager (DSM)