Versatile 2-bay NAS for high-speed file sharing and centralized data management

Synology DS218 comes with a new 64-bit quad-core processor to deliver excellent data transfer speed and supports rich applications such as multimedia streaming, and file syncing and sharing. Data can be further protected with RAID 1 disk mirroring support.

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CPU

Quad-core 1.4GHz 

Memory

2GB DDR4

Performance

Over 112 MB/s and 112 MB/s sequential read and write

Capacity

Surpass 16TB per single volume

Ultimate file management and sharing

File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS218 supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.

Ultimate file management and sharing

Access and sync your files seamlessly

Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more

Sync files on demand: Save the storage space and network bandwidth of your PC.

Go back in time: Easily retrieve previous versions of your shared files.

Back up your data: Protect your files with scheduled backups or in real-time.

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Easy backup solutions

Back up any computer or mobile device with Synology's comprehensive multi-versioning backup solution. You can protect your computer and NAS against malicious attacks including the rising encryption-based ransomware threats.

Easy backup solutions

Easy file access with QuickConnect

Access files on your Synology NAS over the Internet without the hassle of setting up port forwarding rules, DDNS, or other complicated network settings. QuickConnect allows you to connect via a secure, customizable address, so that you can instantly access media and work files on any Internet-connected device at no additional charge.

Easy file access with QuickConnect

Stream content to your TV

Turn your Synology NAS into a home media hub and stream your digital contents to computers, mobile devices, Samsung TV, Apple TV, Google Chromecast, and DLNA devices.

Stream content to your TV

Stream content to your TV

Turn your Synology NAS into a home media hub and stream your digital contents to computers, mobile devices, Samsung TV, Apple TV, Google Chromecast, and DLNA devices.

Stream content to your TV

Powered by Synology DiskStation Manager

Surveillance

Surveillance

Protect your home or business with intelligent monitoring and video management tools.

Learn more
Desktop Backup

Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

Learn more
Public Cloud Integration

Public Cloud Integration

Back up and synchronize data easily between public cloud accounts and your NAS.

Learn more
DSM UI

DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

Learn more
Security

Security

Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.

Learn more
Multimedia

Multimedia

Complete multimedia solution for management, streaming, and playback.

Learn more
product DS218 front view photo
product DS218 back view photo
  • 1 Status indicator
  • 2 LAN indicator
  • 3 Drive status indicator
  • 4 USB 2.0 port
  • 5 USB copy button
  • 6 Power button and indicator
  • 7 USB 3.0 port
  • 8 Reset button
  • 9 1GbE RJ-45 port
  • 10 Power port
  • 11 System fan
  • 12 Kensington Security Slot

Hardware Specifications

CPU

CPU

CPU Model Realtek RTD1296
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 4-core 1.4 GHz
Hardware Encryption Engine
Hardware Transcoding Engine 10-bit H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 60

Memory

Memory

System Memory 2 GB DDR4 non-ECC
Notes Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.

Storage

Storage

Drive Bays 2
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Single Volume Size* 108 TB
Hot Swappable Drive
Notes "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.

External Ports

External Ports

RJ-45 1GbE LAN Port 1
USB 2.0 Port 1
USB 3.2 Gen 1 Port* 2
USB / SD Copy
Notes The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

File System

File System

Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT

Appearance

Appearance

Size (Height x Width x Depth) 165 mm x 108 mm x 233.2 mm
Weight 1.3 kg

Others

Others

System Fan 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 19.3 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60 W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 14.99 W (Access)
5.78 W (HDD Hibernation)
British Thermal Unit 51.15 BTU/hr (Access)
19.72 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

Temperature

Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH

Certification

Certification

  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • KC
  • RCM

Warranty

Warranty

2 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

Environment

RoHS Compliant

Packaging Content

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

Optional Accessories

DSM Specifications

Storage Management

Storage Management

Maximum Internal Volume Number 64
SSD TRIM
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 Services

File Services

File Protocol SMB/AFP/NFS/FTP/WebDAV
Maximum Concurrent SMB/AFP/FTP Connections 200
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.

Account & Shared Folder

Account & Shared Folder

Maximum Local User Accounts 2,048
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 4

Log Center

Log Center

Syslog Events per Second 400

General Specifications

General Specifications

Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Safari
Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
Notes For an updated list of supported browser versions, check the DSM Technical Specifications.

Add-on Packages view the complete package list

Synology Chat

Synology Chat

Maximum Users 500
Notes The number of concurrent HTTP connections for Synology Chat was configured to the maximum.

Download Station

Download Station

Maximum Concurrent Download Tasks 80

SAN Manager

SAN Manager

Maximum iSCSI Target Number 10
Maximum LUN 10
LUN Clone/Snapshot, Windows ODX
Notes iSCSI Manager has been renamed to SAN Manager in DSM 7.0.

Media Server

Media Server

DLNA Compliance

Synology Photos

Synology Photos

Facial Recognition
Notes Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article.

Snapshot Replication

Snapshot Replication

Maximum Snapshots per Shared Folder 256
Maximum of System Snapshots 4,096

Surveillance Station

Surveillance Station

Maximum IP cam (Licenses required) 20 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264) 600 FPS @ 720p (1280x720)
300 FPS @ 1080p (1920x1080)
200 FPS @ 3M (2048x1536)
150 FPS @ 5M (2591x1944)
110 FPS @ 4K (3840x2160)
Total FPS (H.265) 600 FPS @ 720p (1280x720)
300 FPS @ 1080p (1920x1080)
240 FPS @ 3M (2048x1536)
200 FPS @ 5M (2591x1944)
180 FPS @ 4K (3840x2160)
Total FPS (MJPEG) 240 FPS @ 720p (1280x720)
200 FPS @ 1080p (1920x1080)
130 FPS @ 3M (2048x1536)
80 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.
  • The maximum channel number also includes devices installed on Virtual DSM.
  • Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).

Synology Drive

Synology Drive

Recommended Number of Hosted Files 500,000 (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 Sync Clients 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

Synology Office

Maximum Users 200
Notes
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM

Video Station

Video Station

Video Transcoding 4K Group 3 (See more)
Maximum Transcoding Channel Number 1 channel, 60 FPS @ 4K (4096 x 2160), H.265 (HEVC), 10-bit or
1 channel, 30 FPS @ 1080p (1920 × 1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1

VPN Server

VPN Server

Maximum Connections 20

Notes:

  1. Model specifications are subject to change without prior notice.
  2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.