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    Synology DiskStation DS218 Versatile 2-bay NAS

    Manufacturer: Synology
    Brand Synology Wi-Fi No Hard Disk Capacity No Capacity Warranty 7 Day Replacement LAN Yes AC Powerd Yes USB Version 2.0, 3.0
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    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.




    Quad-core 1.4GHz




    2GB DDR4




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




    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.



    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. Learn more



    Cloud Station Sharesync



    Cloud Station Drive



    Cloud Station Server



    DS Cloud


    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.



    Powered by Synology DSM



    Surveillance Station


    Complete surveillance solution for recording, monitoring, and management.


    Learn more



    Desktop Backup


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


    Learn more



    Public Cloud Integration


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


    Learn more



    DSM UI


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


    Learn more





    Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.


    Learn more





    Complete multimedia solution for management, streaming, and playback.


    Learn more



    1Status indicator
    2LAN indicator
    3Drive status indicator


    4USB 2.0 port
    5USB copy button
    6Power button and indicator


    7USB 3.0 port
    8Reset button
    91GbE RJ-45 port


    10Power port
    12Kensington Security Slot


    Hardware & Software Specs


    CPU CPU Model Realtek RTD1296
      CPU Architecture 64-bit
      CPU Frequency Quad 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 System Memory 2 GB DDR4
      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 Drive Bays 2
      Compatible Drive Type* (See all supported drives) 3.5" SATA HDD
    2.5" SATA HDD
    2.5" SATA SSD
      Maximum Internal Raw Capacity 32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
      Maximum Single Volume Size* 108 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 Port 1
      USB 2.0 Port 1
      USB 3.0 Port 2
      USB / SD Copy  
    File System Internal Drives Btrfs
      External Drives Btrfs
      Notes exFAT Access is purchased separately in Package Center.
    Appearance Size (Height x Width x Depth) 165 mm x 108 mm x 233.2 mm
      Weight 1.3 kg
    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 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%
    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 EAC
      Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
    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






    Software Specs


    DSM Specifications
    Storage Management Maximum Internal Volume Number 64
      Maximum iSCSI Target Number 10
      Maximum iSCSI LUN 10
      iSCSI LUN Clone/Snapshot, Windows ODX  
      SSD TRIM  
      Supported RAID Type Synology Hybrid RAID
    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 Protocol CIFS/AFP/NFS/FTP/WebDAV
      Maximum Concurrent CIFS/AFP/FTP Connections 200
      Windows Access Control List (ACL) Integration  
      NFS Kerberos Authentication  
    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 Syslog Events per Second 400
    General Specifications Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
      Supported Browsers Chrome
    Internet Explorer 10 onwards
    Safari 10 onwards
    Safari (iOS 10 onwards)
    Chrome (Android 6.0 onwards)
      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
    Add-on Packages view the complete package list
    Synology Chat Maximum Users 500
      Notes The number of concurrent HTTP connections for Synology 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 Recommended Number of Hosted Files 100,000
      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 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 80
    exFAT Access (Optional)  
    Media Server DLNA Compliance  
    Moments Facial Recognition  
      Subject Recognition  
    Snapshot Replication Maximum Snapshots per Shared Folder 256
      Maximum of System Snapshots 4,096
    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.
    Synology Drive Recommended Number of Hosted Files 100,000 (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 limits above may result in longer response time in file operations.
    Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
    Synology 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
    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 Maximum Connections 20
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