Synology DiskStation 5-Bay (5x 3TB NAS Drives) Network Attached Storage (NAS) DS1515 5300 First Value Series with a powerful quad-core CPU Supports both Hardware Encryption Engine and Floating-Point Unit 4 x 1GbE ports with Failover and Link Aggregation support High Availability and SSD Read/Write Cache Support Scale up to 15 drives with Synology DX513