28 TB (14 TB drive x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size
Hot Swappable Drive
“Compatible drive type” indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)
RJ-45 1GbE LAN Port
USB 3.0 Port
HFS+ is read only, max 2TB volume size.
exFAT Access is purchased separately in Package Center.
Size (Height x Width x Depth)
165 mm x 100 mm x 225.5 mm
92 mm x 92 mm x 1 pcs
Fan Speed Mode
Brightness adjustable front LED indicators
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter
AC Input Power Voltage
100V to 240V AC
50/60 Hz, Single Phase
17.48 W (Access)
7.03 W (HDD Hibernation)
British Thermal Unit
59.68 BTU/hr (Access)
24 BTU/hr (HDD Hibernation)
5°C to 40°C (40°F to 104°F)
-20°C to 60°C (-5°F to 140°F)
5% to 95% RH
Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
Recommended Number of Hosted Files
100,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Connections for PC Clients
200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Exceeding the limits above may result in longer response time in file operations.
EXT4 file system and non-encrypted shared folders were used during the aforementioned testing.
Multiple files were opened for testing and each file was edited by 30 users simultaneously.
CPU and RAM usage were both under 80% when the number of maximum users was reached.
Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM