4-bay RAID 0/1/5, NAS Server with Windows Active Directory Service Support

Item# ST-SYN-CS406

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Synology® Series CS-406

Small footprint, terabytes capacity, RAID redundancy, ADS support, and stylish design, make CS-406 an ideal device for a wide range of usage.

Work with Windows ADS

Cube Station itself already has account management, but what if you want your Windows-domain colleagues to share the function-rich server? The Windows domain support is compatible with Windows ADS and NT4 Domain.

More Data Space, Less Desk Space

If you want a storage device with a large capacity and also want it to be elegant and have a small footprint, then the CS-406 is your perfect choice. It allows you to easily assemble 4 SATA hard drives into a small cube and make a multi-terabyte storage unit.

Transfer Data Securely

If you are worried about critical data being accessed via Internet, the Secure FTP and Secure Network Backup can put your mind at ease. Secure FTP uses mature SSL/TLS technology. Secure Network Backup uses the industry-proven SSH package to transfer data.

Protect Your Data with Redundancy

What can you get from a 4-drive system? RAID! CS-406 supports large-capacity RAID 0 and reliable RAID1 and RAID 5.

Program Your Own Website

Creating your own web site is a fun project to take on and with the Cube Station it now even easier. Disk Station now supports PHP+MySQL. You are free to construct your own web site with dynamic web contents, or to install PHP open source applications from the Internet, such as blog and bulletin boards.

Total Backup Solution

Data backup is so important but people tend to ignore it, Cube Station makes data backup so complete and automatic that backup is always happening without much attention. From Network Backup to Local Backup, from USB Copy to PC Backup (Synology Data Replicator II), you can always find backup alternatives that fit your needs.

Let the Music Play

If you have cool photos, music, and movies, why not share them? You simply upload the files to Cube Station, hook up a Digital Media Adapter, and you can enjoy them on your TV or audio set.

Continuous Download without a PC

Wouldn’t it be great if you could turn off your PC when you are downloading files? Download Station was designed specifically just for that. You only need to manage the download tasks with Synology's Download Redirector, and the files will be transferred to Disk Station. That’s it

Product Features:
  • Supports RAID 0,1,5
  • Network Attached Storage, Share your digital content over the network
  • Supports Windows Active Directory Service (ADS)
  • Build-in Dynamic Web Site Server with PHP and MySQL support
  • Share your Photo over Internet with build-in Photo Station
  • Share your USB Printer over Network with build-in USB Printer Server
  • One-Touch USB Backup from your USB device, such as Digital Camera, MP3 player to Disk Station
  • Support UPnP Multimedia Player for Digital Home
  • Unattended Download for HTTP, FTP and BitTorrent with build-in Download Station Functions 
  • Encrypted FTP Server with Hack Preventions
  • Total backup solution, support NAS to NAS, PC to NAS and NAS to external hard drive backup
  • Support USB or eSATA External Hard Drive for Storage Expansions

Form Factor

4-Bay Enclosure

Host Interface

Gigabit Ethernet

Drive Interface

SATA I / SATA II x 4, Supports up to 4 x 500GB Hard Drive

RAID Level Support

RAID 0, 1, 5

Front Panel Expansion Ports


Back Panel Expansion Ports

USB 2.0 x 2

Support Networking Protocol


Windows ADS Support


Supported Applications

Web Server with PHP+MySQL Support
USB Printer Sharing Server
FTP Server
Photo Station 2
Backup Server
Download Station with bandwidth control
UPnP Multimedia Server
iTunes Server
UPS support over USB

Management Interface

Web-Based Management

Power Adapter

Input:100V~240V 50~60Hz 1.5A 
Output: 12V 1.66A

Supported OS

Windows XP/2000/2003, Mac OS X or above,  Linux 2.4 or above



Dimension (W x D x H)

9” x 6.6 ” x 7.2 ”


4.9 lb