Linux NAS | SMB - Tower

N4200PRO The Turbo-Charged Zero-Crash NAS
  • Vastly Improved Performance
  • Dual DOM Protection
  • Built-In Mini-UPS
  • Dual Display Convenience
  • Rock-Solid Security
  • Multiple Backup Options



Media: eTeknix | Country: UK

“Performance wise I can with out a doubt say that that I was surprised as to how close the N4200PRO came to the theoretical maximum bandwidth possible on Gigabit LAN.”

Media: Techlabs | Country:

“In the end all we have to say is that Thecus N4200PRO is a great multi-functional 4-bay server, which is more than a black box storing data on the local network. This device boasts great level of execution and powerful “filling” based on Intel Atom D510, which provides confident performance.”

Media: iXBT | Country: Russia

“As for software, Thecus has several interesting peculiarities: it supports several file systems for disk volumes, has in-built backup system, supports external module installation capability, ISO and iSCSI mounting, and IP Sharing regime when working with two networks.”  

Media: Branding Taiwan | Country: Taiwan

The Thecus N4200PRO has distinguished itself in many ways with Thecus-exclusive innovations like the Mini-UPS backup battery and Dual DOM protection. Bringing these together with performance that is top in the industry and an excellent feature set that will satisfy anyone from a basic user that needs backup to an expert who runs his own website and needs a professional array of functionality has made the N4200PRO an impressive option and a shoe-in for prizes worldwide.

Media: ComputerDIY | Country: Taiwan

Each year, Computer DIY selects the year's best products from representatives across the market according to their maturity as a product and outstanding application or use. Receiving editors' and users' continuous praise, Thecus's three big stars, the N2200XXX, N4200PRO, and N5200XXX take their thrones.


  • Vastly Improved Performance
    By coupling the power of an Intel® Atom™ D525 Processor with the speed of next-generation DDR3 memory, the N4200PRO delivers wicked performance. Files transfer faster, commands are executed quicker, and more clients can connect to the N4200PRO than ever before.
  • Dual DOM Protection
    It's always good to have a backup, and that goes double for system software. If something should go wrong, your data and your entire system could be at risk. Put your mind at ease with Dual DOM OS Redundancy, which gives you a secondary DOM that can reprogram the primary DOM automatically in case of a malfunction for maximum reliability and uptime.
  • Built-In Mini-UPS
    With the N4200PRO's built-in Mini-UPS, not even a power outage can slow you down.  The Mini-UPS provides power to allow the N4200PRO to write unwritten data to the hard disks and safely shutdown, ensuring the integrity of your data and preserving your memories.
  • Dual Display Convenience
    Wondering how your NAS is doing? Just check out the LCD display on the N4200PRO for convenient status information including HDD activity, LAN activity and USB Copy status. The sharp OLED display even allows you to change various system settings without having to be near a computer.
  • Rock-Solid Security
    The N4200PRO safeguards your data with a number of selectable RAID modes, including RAID 0, 1, 5, 6, 10, JBOD. Changing damaged hard disks is also a breeze with its built-in hot-swap, hot-spare, online RAID migration and expansion, as well as auto-rebuild capabilities. And if you need even more protection, there also AES 256bit RAID volume encryption available.
  • Multiple Backup Options
    Backup your data your way with the N4200PRO's multiple backup options. Included with the device are the Thecus® Backup Utility, Nsync remote replication, snapshot support, and even Acronis® OEM Backup Software, giving you a wide variety of ways to backup your precious data. 


The original N4200 made huge waves in the hardware community with its innovative features and functionality. Today, Thecus® Technology, the Creator in Storage, is proud to announce its successor: the N4200PRO. Packing an all-new Intel® Atom™ processor and DDR3 memory, the N4200PRO takes the original Zero-Crash NAS and puts performance into overdrive.

Performance freaks are going to love the new N4200PRO. Plentiful storage management options including RAID 0, 1, 5, 6,10, JBOD are present, as are convenient features such as hot-swap, hot-spare, online RAID migration and expansion, as well as auto-rebuild.

Of course, the N4200PRO brings over the most popular features from its predecessor. Dual DOM OS Redundancy protects your system's critical software with a secondary DOM that reprograms the primary DOM should it fail for any reason. A Mini-UPS protects the N4200PRO from sudden power outages, allowing the system to store unwritten data to the hard disks and safely shut down. The N4200PRO also retains the dual displays of the N4200, sporting an LCD display for system information, and a colorful OLED display that allows you to change a variety of system settings without having to boot a single computer. Finally, a full suite of useful features including an iTunes Server, Photo Web Server, Media Server, FTP Server, Print Server, Download Manger and more are included with the N4200PRO, making it not only one of the most powerful, but also the most robust storage devices available today.

“Upgraded with a next-generation Intel Atom processor and DDR3 memory, we've taken the original Zero-Crash NAS and made it even better,” said Florence Shih, Thecus® Technology general manager. “Packing the latest technology and signature Thecus® features and friendliness, the N4200PRO is by far the most powerful, feature-packed, and secure four-bay NAS we've ever devised.”

The N4200PRO is paired with Intel® Atom™ D525 processor coupled with 1GB of high-speed DDR3 memory. This combination of one of the latest Intel Atom processors and next-generation DDR3 memory delivers vastly increased file transfer performance, more concurrent connections, and an overall smoother operating experience. This boosted processing power will come into play when managing the N4200PRO's four SATA bays' worth of storage, which enables a maximum of 8TB of storage space. 

“Many small businesses are deploying network attached storage appliances as their first company solution,” said David Tuhy, general manager, Intel Storage Group. “Our newest Intel Atom processor with integrated RAID storage features enables companies like Thecus to deliver the energy efficiency, performance and data protection required to meet the needs of its customers.”


1.Hardware Platform




Intel® Atom™ Processor D525 

System Memory


LAN Interface

RJ-45x2 : 10/100/1000 BASE-TX Auto MDI/MDI-X

LCD indicator

  • HDD Power, Activity (Yellow) / Fail (Red)
  • LAN_WAN Activity (Green)
  • USB_COPY_Busy (Blue)
  • USB_COPY_ Fail (Red)
  • OLED Module

  • 2.8” OLED display
  • 4 buttons (ENTER, ESC, UP, DOWN)
  • Multi-lingual supported
  • Power Supply

    External power adapter 19V input (support 2TB and above HDDx4 )

    Disk Interface

    SATA x4 for internal, 2x eSATA for external

    Expansion Slot

    PCI-e x1

    USB Interface

    USB 2.0 host port x6(Front x2, Back x4) (A Type)

    Thermal/Fan control

  • Thermal sensor on system and processor
  • System fan speed controlled according to temperature
  • Real-time clock

    Battery backup system clock


  • Power button
  • Reset to factory default button
  • Chassis

    Metal chassis

    Lithium-ion Battery

    Built-in battery backup module (Mini-UPS)


  • Temperature : 5°C to 40°C
  • Humidity : 0 ~ 80 % R.H. (Non-condensing)

  • 2. Software Functions


    RAID Modes

    RAID 0, 1, 5, 6,10, JBOD





    Hot Spare


    Online RAID Migration


    Online RAID Expansion


    SMART Info


    SMART Test


    RAID Volume Encryption

     AES 256bit


    Power Management

    Configurable automatic drive spin down


    Supports roaming to other N4200PRO NAS

    Bad Block Scan


    Volume Management

    Multiple RAID


    Selectable File Systems

    Ext3/ XFS/ZFS



    Fixed IP address, dynamic IP address

    IP sharing mode

    Can be enabled/disabled

    Link Aggregation

    802.3ad, load balance, failover, Balance-XOR, Balance-TLB, Balance-ALB

    Transport Protocols

    TCP/IP, AppleTalk

    File Protocols

    v3, AFP

    Data Access

    Client OS support

    Windows XP and after
    Windows Server 2003 and after
    Mac OS X


    Web-based file access


    Built-in FTP server with bandwidth  

    Secure FTP

    Built-in Secure FTP server with bandwidth control

    Download Manager (module)

    HTTP / FTP / BT / eMule / NZB

    Printer Server (IPP)

  • Supports USB printers
  • Supports IPP various printers
  • Client can manage print tasks (list/delete) via web user interface
  • TFTP Server

    Users can download and upload files with TFTP programs.

    Data Backup

    USB copy via OLED operation

    Copy USB mass storage device contents to specified locations on NAS

    NAS data backup to external USB disk (module)

    Incremental with schedule supported

    Client schedule incremental

    Acronis True Image (OEM version)

    Client system Disaster Recovery

    Acronis True Image (OEM version)

    Battery Backup Module (Mini-UPS)

    Contingency Battery Power Supply

    NAS Remote Replication

    Via Thecus proprietary Nsync

    NAS Remote Replication (module)

    Via Rsync to replicate data between two systems.



    Mac Time Machine


    Bi-directional USB Copy (Module)


    Block Level Access

    iSCSI Target

    Supports Microsoft/Mac/Linux Initiator

    iSCSI initiator

    For stackable with N4200/ N4200Eco/N4200PRO/ N5200PRO/1U4600/N5500/N7700 series/N8800 series

    iSCSI Thin Provisioning

    Virtual size adjustable up to 16TB

    Multimedia Support

    iTunes Server

    Supported file types: AAC, MP3 w/ ID3 tag, WAV

    Photo Web Server

  • Supported file types: GIF, JPG (JPEG), BMP, PNG
  • Supports EXIF display
  • Supports slide show
  • Media server

    Supports uPnP AV streaming protocol

    User Authentication

    Local User

    Supports built-in user accounts

    Local Group

    Supports built-in user groups

    Windows NT/ADS


    File System


    Journaling file system



    Language Support

    Unicode Support


    Read, Write or Deny options on individual users or groups

    Authorization (ACL)

    Read, Write or Deny options on individual users or groups for shared and sub-folders


    Multi-Lingual Web-based Administration

    Web-based server management interface supports English, Traditional Chinese, Simplified Chinese, Japanese, Korean, French, German, Italian, Spanish, Russian, Polish and Portuguese.

    Utility Program

  • MS Windows / Mac OS X Setup Wizard,
  • Supports multilingual
  • Supports Windows 2000/7/XP/2003/Vista, Mac OS X backup utility
  • Email notification

    Sends system messages via email to system administrator

    SNMP Management


    Power management

    Scheduled On/Off


    Wake-On-LAN (WOL)


    Auto Power On After Power Failure



    Recycle bin


    Dual DOM


    Web Server + MySQL (module)


    ISO Mount


    Web Disk

    Supported with remote access

    Auto Module Installation

    If Thecus IP storage is capable of connecting to the Internet, then it will automatically link to Thecus's official website and list available modules.

    IP CAM Surveillance Server

    Supports up to 5 IP CAM

    Supported Web Browsers

  • Internet Explorer 7 or higher
  • Firefox 3 or higher
  • Package Contents

    Accessory Bag(with key) Ethernet Cable Power Cord Power Adaptor
    Lithium-ion Battery Acronis True Image DVD Universal CD QIG
    Warranty Card HDD Compatibility List Card

    How To

    NAS 101

    Connecting to your NAS

    Backup and Data Security


    Thecus TV

    Discover iSCSI and how to use it with a Thecus NAS

    This tutorial is separated in three parts. The first part will teach you what's iSCSI and how it can be used. The second and third part would be practical demonstration on iSCSI Target/Initiator. Only the second part requires a Thecus NAS!

    NAS: Storage for Home and Small Office

    This video shows how a Network Attached Storage (NAS) solution with Intel® processors can help save time and increase productivity for small business and help organize, share and back-up your data at home. Simply dumping data onto external drives is no longer considered a good practice. Network Attached Storage (NAS) is surprisingly affordable and allows people to actually manage the data they store.

    The basics of Thecus Firmware V5

    Learn more about the brand new Firmware V5 for Thecus NAS. This video focus on UI improvements, user-friendliness features, and the new AMI (Auto Module Installation) which allows you to customize your NAS in a few clics. Live video starts at 2:18

    Thecus® N4200 - Zero-Crash™ with Dual Power NAS

    In the digital age, people are creating and accessing digital content like never before. As such, they require a storage device that is powerful enough to store and serve this content, but friendly enough to manage quickly and effortlessly. Today, digital storage leader Thecus® Technology is proud to announce the Thecus® N4200. Fast, secure, and incredibly easy-to-use, the N4200 is the ideal home NAS for the digital lifestyle.