SYNOLOGY 2-BAY DISKSTATION DS218J

  • Over 113 MB/s and 112 MB/s sequential reading and writing
  • Hardware encryption engine
  • Eco-friendly 17.48 W in access, 7.03W in HDD Hibernation
  • 2 Bays (Max 20TB)
  • Dual Core 1.3GHz CPU
  • 512MB DDR3 RAM
  • 2 USB3.0
  • 1 Gigabit LAN

Description

Hardware Specifications
CPU
CPU Model Marvell Armada 385 88F6820
CPU Architecture 32-bit
CPU Frequency Dual Core 1.3 GHz
Hardware Encryption Engine  √
Memory
System Memory 512 MB DDR3
Storage
Drive Bays 2
Compatible Drive Type* (See all supported drives)
  • 3.5″ SATA HDD
  • 2.5″ SATA HDD (with optional 2.5″ Disk Holder)
  • 2.5″ SATA SSD (with optional 2.5″ Disk Holder)
Maximum Internal Raw Capacity 28 TB (14 TB drive x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size 16 TB
Hot Swappable Drive  –
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 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)
External Ports
RJ-45 1GbE LAN Port 1
USB 3.0 Port 2
File System
Internal Drives EXT4
External Drives
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+*
  • exFAT*
Notes
  • HFS+ is read only, max 2TB volume size.
  • exFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth) 165 mm x 100 mm x 225.5 mm
Weight 0.88 kg
Others
System Fan 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
Brightness adjustable front LED indicators  √
Power Recovery  √
Noise Level* 18.2 dB(A)
Scheduled Power On/Off  √
Wake on LAN/WAN  √
Power Supply Unit / Adapter 60W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 17.48 W (Access)
7.03 W (HDD Hibernation)
British Thermal Unit 59.68 BTU/hr (Access)
24 BTU/hr (HDD Hibernation)
Environment Temperature
Operating Temperature 5°C to 40°C (40°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 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 ( See more )
Storage Management
Maximum Internal Volume Number 256
Maximum iSCSI Target Number 10
Maximum iSCSI LUN 10
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
RAID Migration Basic to RAID 1
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
Volume Expansion by Adding a HDD Synology Hybrid RAID
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  √
NFS Kerberos Authentication  √
Log Center  √
Syslog Events per Second 100
Add-on Packages (learn more about the complete add-on package list)
Chat  √
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  √
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  √
Maximum Concurrent Download Tasks 30
Drive  √
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)  √
Media Server  √
DLNA Compliance  √
Moments  √
Facial recognition  √
Subject recognition  –
Office  √
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  √
Maximum IP cam(Licenses required) 14 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 420 FPS @ 720p (1280×720)
120 FPS @ 1080p (1920×1080)
90 FPS @ 3M (2048×1536)
60 FPS @ 5M (2591×1944)
20 FPS @ 4K (3840×2160)
Total FPS (H.265)* 420 FPS @ 720p (1280×720)
210 FPS @ 1080p (1920×1080)
140 FPS @ 3M (2048×1536)
90 FPS @ 5M (2591×1944)
30 FPS @ 4K (3840×2160)
Total FPS (MJPEG)* 140 FPS @ 720p (1280×720)
70 FPS @ 1080p (1920×1080)
40 FPS @ 3M (2048×1536)
20 FPS @ 5M (2591×1944)
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  √
Video Transcoding Group 2 (See more)
Notes
VPN Server  √
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
Optional Accessories
  • Surveillance Device License Pack
  • Disk Holder: Type C
  • VS360HD
  • VS960HD

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