Hardware Specifications
CPU
CPU Model Realtek RTD1293
CPU Architecture 64-bit
CPU Frequency Dual Core 1.4GHz
Hardware Encryption Engine  YES
Memory
System Memory 1GB DDR4
Storage
Drive Bays 4
Compatible Drive Type*
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity 56TB (14TB drive x4) (Capacity may vary by RAID types)
Maximum Single Volume Size 108TB
Hot Swappable Drive  YES
Notes
  • "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 single volume size is not directly related to the maximum raw capacity.
External Ports
RJ45 1GbE LAN Port 1
USB 3.0 Port 2
File System
Internal Drives EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
Notes exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth) 184mm x 168mm x 230mm 
Weight 2.21kg 
Others
System Fan 80mm x 80mm x 2pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness adjustable front LED indicators  YES
Power Recovery  YES
Noise Level* 20.6dB(A) 
Scheduled Power On/Off  YES
Wake on LAN/WAN  YES
Power Supply Unit / Adapter 90W 
AC Input Power Voltage 100V~40V AC
Power Frequency 50/60Hz, Single Phase
Power Consumption* 21.22W (Access) 
8.97W (HDD Hibernation) 
British Thermal Unit 72.41BTU/hr (Access) 
30.61BTU/hr (HDD Hibernation) 
Environment Temperature
Operating Temperature 5°C~40°C (40°F~104°F)
Storage Temperature -20°C~60°C (-5°F~140°F)
Relative Humidity 5%~95% RH
Certification
  • EAC
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
Warranty 2 Years
Notes
  • 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%
DSM Specifications
Storage Management
Maximum Internal Volume Number 256
Maximum iSCSI Target Number 10
Maximum iSCSI LUN 10
SSD TRIM  YES
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • RAID 5
  • JBOD
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
File Sharing Capacity
Maximum Local User Accounts 1024
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 2
Maximum Concurrent CIFS/AFP/FTP Connections 100
Windows Access Control List (ACL) Integration  YES
NFS Kerberos Authentication  YES
Log Center  YES
Syslog Events per Second 100
Add-on Packages 
Chat  YES
Maximum Users 10
Notes
  • The number of concurrent HTTP connections for Chat was configured to the maximum.
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
Cloud Station Server  YES
Maximum Number of Concurrently Connected Devices 100
Maximum Number of Hosted Files (ext4) 100,000
Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.
Download Station  YES
Maximum Concurrent Download Tasks 30
Drive YES
Maximum Number of Hosted Files 100,000
Maximum Number of Concurrent Connections for PC Clients 200
Notes
  • The EXT4 file system was used for the purpose of testing.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Drive service.
  • The maximum number of concurrent connections refers to the maximum number of connections that can be maintained when the maximum number of hosted files was reached.
  • Non-encrypted shared folders were used during the aforementioned testing.
exFAT Access (optional)  YES
Media Server  YES
DLNA Compliance  YES
Moments  YES
Facial recognition  YES
Subject recognition  YES
Office  YES
Maximum Users 200
Notes
  • 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
Surveillance Station  YES
Maximum IP cam (Licenses required) 16 (including 2 Free License) 
Total FPS (H.264)* 480 FPS @ 720p (1280x720) 
240 FPS @ 1080p (1920×1080) 
150 FPS @ 3M (2048x1536) 
100 FPS @ 5M (2591x1944) 
70 FPS @ 4K (3840x2160)
Total FPS (H.265)* 480 FPS @ 720p (1280x720) 
320 FPS @ 1080p (1920×1080) 
224 FPS @ 3M (2048x1536) 
160 FPS @ 5M (2591x1944) 
100 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 224 FPS @ 720p (1280x720) 
150 FPS @ 1080p (1920×1080) 
100 FPS @ 3M (2048x1536) 
60 FPS @ 5M (2591x1944)
Notes 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.
Video Station  YES
Video Transcoding Group 2
Notes  YES
VPN Server YES 
Maximum Connections 5
Environment & Packaging
Environment RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1