Hardware Specifications
CPU
CPU Model INTEL Atom C2538
CPU Frequency Quad Core 2.4GHz
Floating Point Yes
Hardware Encryption Engine (AES-NI) Yes
Memory
System Memory 2GB DDR3
Memory Module Pre-installed 2GB x1
Total Memory Slots 2
Memory Expandable up to 6GB (2GB + 4GB)
Storage
Drive Bay(s) 8
Maximum Drive Bays with Expansion Unit 18
Compatible Drive Type
  • 3.5" SATA III/SATA II HDD
  • 2.5" SATA III/SATA II HDD
  • 2.5" SATA III/SATA II SSD
Maximum Internal Raw Capacity 48TB (6TB HDD x8) (Capacity may vary by RAID types) (See All Supported HDD)
Hot Swappable Drive Yes
External Ports
USB 3.0 Port 4
eSATA Port 2
File System
Internal Drives EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
Appearance
Size (Height X Width X Depth) 157mm X 340mm X 233mm
Weight 5.29kg
Others
RJ45 1GbE LAN Port 4 (with Link Aggregation / Failover support)
Wake on LAN/WAN  
System Fan 120mmx120mmx2pcs
Fan Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan Yes
Wireless Support (dongle) Yes
Noise Level* 24.3 dB(A)
Power Recovery Yes
Scheduled Power On/Off Yes
Power Supply Unit / Adapter 250W
AC Input Power Voltage 100V~240V AC
Power Frequency 50/60HZ, Single Phase
Power Consumption* 45.88W (Access)
25.23W (HDD Hibernation)
British Thermal Unit 156.55 BTU/hr (Access)
86.09 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature 5°C~35°C (40°F~95°F)
Storage Temperature -20°C~60°C (-5°F~140°F)
Relative Humidity 5%~95% RH
Certification
  • FCC Class B
  • CE Class B
  • BSMI Class B
Warranty 3 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 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1m away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25°C~25.75°C; Humidity: 58.2%~61.8%

DSM Specifications ( See more )
Storage Management
Maximum Single Volume Size 108TB
Maximum Internal Volume Number 512
Maximum iSCSI Target Number 32
Maximum iSCSI LUN 256
iSCSI LUN Clone/Snapshot, Windows ODX 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
  • RAID 6
  • JBOD
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
SSD Support
SSD Read/Write Cache (White Paper) Yes
SSD TRIM Yes 
File Sharing Capacity
Maximum User Accounts 2048
Maximum Groups 256
Maximum Shared Folder 512
Maximum Shared Folder Sync Tasks 8
Maximum Concurrent CIFS/AFP/FTP Connections 512
Windows Access Control List (ACL) Integration Yes
NFS Kerberos Authentication Yes
High Availability Manager Yes
Log Center Yes
Syslog Events per Second 800
Virtualization
VMware vSphere 5 with VAAI Yes
Windows Server 2012 Yes
Windows Server 2012 R2 Yes
Citrix Ready Yes
Notes Performance figures could vary on different environments.

Add-on Packages

(See more)
Antivirus Essential Yes
Antivirus by McAfee (Trial) Yes
Audio Station Yes
Central Management System Yes
Cloud Station Yes
Maximum Concurrent File Transfers 512
Cloud Sync Yes
Directory Server Yes
DNS Server Yes
Download Station Yes
Maximum Concurrent Download Tasks 80
Glacier Backup Yes
HiDrive Backup Yes
iTunes Server Yes 
Java Manager Yes 
Mail Server Yes 
Mail Station Yes 
Media Server Yes 
DLNA Certification Yes 
Note Station Yes 
Photo Station Yes 
RADIUS Server Yes 
Surveillance Station Yes 
Maximum IP cam (Licenses required) 40x (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 1200 FPS @ 720p (1280x800)
480 FPS @ 1080p (1920×1080)
250 FPS @ 3M (2048x1536)
200 FPS @ 5M (2591x1944)
Total FPS (MJPEG)* 300 FPS @ 720p (1280x800)
150 FPS @ 1080p (1920×1080)
100 FPS @ 3M (2048x1536)
60 FPS @ 5M (2591x1944)
Time Backup Yes
Maximum Task Number 8
Video Station Yes
Video Transcoding Group 1 (See more)
VPN Server Yes
Maximum Connections 20
Notes Surveillance Station throughput is tested with Axis P1347 (H.264@1280x720@30FPS), using continuous recording with live view from Surveillance Station and motion detection by the camera. Live view and recording are sharing the same stream from the camera. Recording video is saved every 5min with the limit of archive folder up to 1GB.

Environment & Packaging
Environment RoHS Compliant
Packaging Content
  • Main Unit x1
  • Welcome Note x1
  • Accessory Pack x1
  • AC Power Cord x1
  • RJ45 LAN Cable x2
Optional Accessories
  • Remote
  • Camera License Pack
  • 4GB DDR3 RAM Module
  • Expansion Unit: DX213 x2
  • Expansion Unit: DX513 x2
  • VS240HD