Synology Disk Station 12-Bay Network Attached Storage (DS3615xs) Scale up to 36 drives with Synology DX1215 One PCIe slot to support high performance network interface card Expandable ECC RAM module (up to 32GB) SATA III 6Gb/s interface support High Availability and SSD read/write cache support VMware , Citrix , and Microsoft Hyper-V certified Running on Synology Disk Station Manager (DSM)