DS218

DiskStation DS218

A versatile 2-bay NAS for small offices and home users

Versatile NAS server for centralized file storage and real-time 4K H.265 video transcoding

Synology DS218 comes with a new 64-bit quad-core processor, delivering excellent data transfer speed, large storage volume management, and 10-bit 4K H.265 video transcoding on the fly.

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 operation without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and sharing of files with just a link. Supports SMB, FTP, AFP, NFS, WebDAV, compatible with any environment.

Synchronize files across your devices

Cloud Station Suite provides real-time data synchronization across all your devices and other Synology NAS. “Intelliversioning" keeps the most important file versions to better utilize storage space.

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 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 with no additional charge.

4K Multimedia Server

Access and stream your favorite 4K content anywhere, anytime. DS218 supports 10-bit 4K H.265 online transcoding. With Video Station and DS video, you can convert and play 4K videos from any computer, mobile device, or other media players that don't support Ultra HD formats.

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Desktop Backup

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

Public Cloud integration

Backup and synchronize data easily between your public cloud accounts and your NAS.

DSM UI

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

Security

Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices

Multimedia

Complete multimedia solution for management, streaming, and playback

Hardware Specifications 
CPU 
CPU ModelRealtek RTD1296
CPU Architecture64-bit
CPU FrequencyQuad Core 1.4 GHz
Hardware Encryption Engine 
Hardware Transcoding Engine10-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 
System Memory2 GB DDR4
Storage 
Drive Bays2
Compatible Drive Type* (See all supported drives)3.5" SATA HDD
 2.5" SATA HDD
 2.5" SATA SSD
  
Maximum Internal Raw Capacity24 TB (12 TB drive x 2) (Capacity may vary by RAID types)
Maximum Single Volume Size108 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 single volume size is not directly related to the maximum raw capacity. (Learn more)
  
External Ports 
RJ-45 1GbE LAN Port1
USB 2.0 Port1
USB 3.0 Port2
Copy Button 
File System 
Internal DrivesEXT4
External DrivesEXT4
 EXT3
 FAT
 NTFS
 HFS+
 exFAT*
  
NotesexFAT Access is purchased separately in Package Center.
Appearance 
Size (Height x Width x Depth)165 mm x 108 mm x 233.2 mm
Weight1.3 kg
Others 
System Fan92 mm x 92 mm x 1 pcs
Fan Speed ModeFull-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 / Adapter60W
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption*14.99 W (Access)
 5.78 W (HDD Hibernation)
British Thermal Unit51.15 BTU/hr (Access)
 19.72 BTU/hr (HDD Hibernation)
Environment Temperature 
Operating Temperature0°C to 40°C (32°F to 104°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
CertificationEAC
 CCC
 RCM
 KC
 FCC
 CE
 BSMI
  
Warranty2 Years
NotesPower 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 Number256
Maximum iSCSI Target Number10
Maximum iSCSI LUN10
SSD TRIM 
Supported RAID TypeSynology Hybrid RAID
 Basic
 JBOD
 RAID 0
 RAID 1
  
RAID MigrationBasic to RAID 1
Volume Expansion with Larger HDDsSynology Hybrid RAID
 RAID 1
  
Volume Expansion by Adding a HDDSynology Hybrid RAID
File Sharing Capacity 
Maximum Local User Accounts2048
Maximum Local Groups256
Maximum Shared Folder256
Maximum Shared Folder Sync Tasks2
Maximum Concurrent CIFS/AFP/FTP Connections200
Windows Access Control List (ACL) Integration 
NFS Kerberos Authentication 
Log Center 
Syslog Events per Second400
Add-on Packages (learn more about the complete add-on package list)  
Chat 
Maximum Users500
NotesThe 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 Devices200
Maximum Number of Synced Files (ext4)100,000 / single file reaction time 632 ms
NotesThe maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing.
 File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. RAM expansion was not used during testing.
 Non-encrypted shared folders were used during the aforementioned testing.
  
Download Station 
Maximum Concurrent Download Tasks80
Drive 
Maximum Number of Synced Files100,000 / single file reaction time 941 ms
Maximum Number of Concurrent Connections for PC Clients200
NotesThe EXT4 file system was used for the purpose of testing.
 The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached.
 File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS.
 Non-encrypted shared folders were used during the aforementioned testing.
  
exFAT Access (optional) 
Media Server 
DLNA Compliance 
Moments 
Facial recognition 
Subject recognition 
Office 
Maximum Users200
NotesMultiple 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)20 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*600 FPS @ 720p (1280x720)
 300 FPS @ 1080p (1920×1080)
 200 FPS @ 3M (2048x1536)
 150 FPS @ 5M (2591x1944)
 110 FPS @ 4K (3840x2160)
Total FPS (H.265)*600 FPS @ 720p (1280x720)
 300 FPS @ 1080p (1920×1080)
 240 FPS @ 3M (2048x1536)
 200 FPS @ 5M (2591x1944)
 180 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*240 FPS @ 720p (1280x720)
 200 FPS @ 1080p (1920×1080)
 130 FPS @ 3M (2048x1536)
 80 FPS @ 5M (2591x1944)
NotesSurveillance 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 Transcoding4K Group 3 (See more)
Maximum Transcoding Channel Number1 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 
Maximum Connections5
Environment & Packaging 
EnvironmentRoHS Compliant
Packaging ContentMain 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