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The Synology DS209j is a two bay 3.5" SATA II network storage device that comes with 64MB of onboard RAM.

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iTunes server, BitTorrent, PHP/MySQL/Use it as a download center and server without a computer

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4TB max capacity with two drive bays /RAID 0,1 and JBOD

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Accepts compatible SSD drives and 2.5" drives with optional adapter

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You can use the integrated photo station, file station, download station (with redirection utility) and security station (IP camera) + data replicator utility for PC backup

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Memory not upgradeable

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The Synology DS209j is a two bay 3.5" SATA II network storage device that comes with 64MB of onboard RAM and can support a maximum capacity of 4TB. JBOD(just a bunch of disks) and RAID 0/1 formations are possible, with RAID 0 having both drives recognized as one big drive which has the fastest performance, or, RAID 1 which uses one drive as an exact copy of the other drive or 'mirrored' for extra backup protection. This is the same 'Disk Station' as the DS109j with the only difference being that this has double the RAM and two drive bays and also quadruple the capacity. All of the same software including Synology's Disk Station Manager is included which makes this usable for a range of applications.

Synology Disk Station Manager is a web based program that lets you manage the drive contents through your web browser by connecting to the DS209j via the Gigabit LAN port. A host of software comes with the unit including an iTunes server, popular BitTorrent programs and web hosting with PHP/MySQL, all of which can run without your computer on. It is also DNLA certified which makes it capable of streaming content to all of your compatible devices like stereos, tv's, PS3, Xbox and others. On the front are green LED's for each drive as well as Status and LAN LED's as well as a blue backlit power button. Also on the front is a third USB port with dedicated copy button that lets you quickly copy the contents of a USB device straight to the drive.



  • CPU: 266MHz, 32bit@133, with floating point
  • Memory: 64MB
  • Internal HDD: 3.5" SATA(II) X2
  • Max Internal Capacity: 4TB (2x 2TB hard drives)(See All Supported HDD)
  • External HDD Interface: USB 2.0 port X3
  • Size: 160mm X 218mm X 88mm
  • Weight: 0.98kg
  • LAN: Gigabit X1
  • Fan: X1(70mmX70mm)
  • Noise Level: 24dB(A)
  • Power Recovery
  • AC Input Power Voltage: 100V to 240V
  • Power Frequency: 50Hz to 60Hz, Single Phase
  • Max Supported IP Camera: 1 (See All Supported IP Cameras)
  • Operating Temperature: 5°C to 35°C (40°F to 95°F)
  • Storage Temperature: -10°C to 70°C (15°F to 155°F)
  • Relative Humidity: 5% to 95%RH
  • Maximum Operating Altitude: 10,000 feet


  • Surveillance Station 3
  • Photo Station 3
  • File Station 2
  • Audio Station
  • Web Station
  • Download Station 2
  • iTunes Server

iPhone Applications

  • DS photo
  • DS audio


  • Mail Station
  • phpMyAdmin
  • SqueezeCenter
  • Webalizer

DLNA/UPnP Media Server Support

  • DLNA Certified
  • Sony PS3, Microsoft Xbox360 (See All Supported DMA)
  • Audio Format: AAC, FLAC, M4A, MP3, Ogg Vorbis, PCM, WAV, WMA, WMA VBR, WMA PRO, WMA Lossless
  • Video Format: 3GP, 3G2, ASF, AVI, DAT, DivX, DVR-MS, ISO, M2T, M2TS, M4V, MKV, MP4, MPEG1, MPEG2, MPEG4, MTS, MOV, QT, SWF, TP, TRP, TS, VOB, WMV, XviD
  • Image Format: BMP, JPG (jpe, jpeg), GIF, ICO, PNG, PSD, TIF (tiff), UFO
  • Playlist Format: WPL, M3U

iTunes Server Support

  • Audio Format: MP3, M4A, M4P, WAV, AIF
  • Video Format: M4V, MOV, MP4
  • Playlist Format: M3U, WPL

Audio Station Support

  • USB Mode: (Audio) AAC, FLAC, M4A, MP3, Ogg Vorbis, WMA, WMA VBR (Playlist) M3U, WPL (Internet Radio) SHOUTcast, Radioio
  • Streaming Mode: (Audio) MP3 (Playlist) M3U, WPL

Photo Station 3 Support

  • Video Format: 3G2, 3GP, ASF, AVI, DAT, DivX, FLV, M4V, MOV, MP4, MPEG, MPG, QT, WMV, XviD, RM, RMVB, VOB
  • Image Format: BMP, JPG (jpe, jpeg), GIF

Networking Protocols

  • CIFS
  • AFP (3.1)
  • FTP
  • NFS
  • Telnet/SSH


  • Firewall
  • Auto-Block
  • "FTP over SSL (explicit)" or "FTP over TLS (explicit)"
  • Encrypted Network Backup
  • Encrypted rsync
  • HTTPS Connection

File System

  • EXT3
  • FAT (External Disk Only)
  • NTFS (External Disk Only)

File Sharing

  • Max User Accounts: 128
  • Max Groups: 64
  • Max Shared Folder: 128
  • Max Concurrent Connections(SAMBA, FTP, AFP): 32


  • Synology Assistant
  • Synology Data Replicator 3
  • Synology Download Redirector
  • Add printer wizard
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