Seagate NAS OS 4 User Manual
Seagate NAS OS 4 

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Seagate NAS OS 4


Congratulations on your purchase of Seagate Business Storage featuring Seagate NAS OS. Designed to satisfy the data sharing and backup needs of small, medium, and branch offices, Seagate NAS OS is an intuitive interface accessible to a wide range of administrators. Additionally, NAS OS offers a rich set of collaborative and data protection tools to help manage your content.

New 4.3 feature: App Button replaces Home Page

The default Home Page in NAS OS 4.2 has been replaced by the App Button, located in the top left corner of the screen and available at all times while browsing the NAS OS Webboard.

When logging into your NAS OS device, it will now default to the Filebrowser for immediate access to your files. The App Button can then be used to access all the apps you use (such as the Device Manager and Backup Manager) with just a few easy clicks.

The Filebrowser itself has been substantially updated to include drag and drop folder uploads, added Advanced Settings for a more personalized experience, and other improvements to functionality and performance.

NAS OS 4.3 also introduces a new method for accessing your Seagate NAS OS device remotely. The Seagate Access service is available to access your device using Sdrive, and this service’s functionality has been enhanced to include a Web Manager that can be accessed both locally and remotely. The Web Manager lists any NAS OS device added to your new or existing Seagate Access account, giving you easy access using any web browser with Internet access using the following web link:

See NAS OS 4.3 New Features for further information on features added to NAS OS 4.

New 4.2 feature: App-based management

Among the many features added to NAS OS 4.2, experienced administrators will notice a new look to the interface as well as a critical update to NAS management: apps. Core NAS OS 3 features have been divided into default apps for NAS OS 4.2:

  • Backup Manager: Formerly the Backup setting for NAS OS 3. Launch Backup Manager to create and manage backup jobs.
  • Device Manager: Formerly the NAS OS 3 interface. Launch Device Manager to change the settings, add users, create shares, and much more.
  • Download Manager: Formerly the Download setting for NAS OS 3. Launch Download Manager to create and manage download jobs.
  • Filebrowser: Formerly the File Browser setting for NAS OS 3 and NAS OS 4. The new Filebrowser is a web-based file viewer. Launch it to view and share files stored on your NAS device.

The administrator can add new apps to the Seagate NAS device using the all-new App Manager.

See NAS OS 4.2 New Features for further information on features added to NAS OS 4.

Content for this manual

This manual will guide you through the process of configuring NAS OS on your Seagate NAS and assist you in troubleshooting any issues that might arise. If you encounter problems, check Getting Help and the Seagate support page. Note that most problems can be resolved by resetting the product to factory conditions (see NAS OS Rescue and Repair ).

Minimum system requirements

Client OS:

  • Windows 10 (32-bit/64-bit)
  • Windows 8 (32-bit/64-bit)
  • Windows 7 (32-bit/64-bit)
  • Windows Server 2012
  • Windows Server 2008 R2
  • Windows Server 2008
  • Mac OS 10.6 and later
  • Linux 2.6 and later

Web browsers:

  • Internet Explorer™ 7.0 or higher
  • Firefox™ 3.0 or higher
  • Safari™ 3.0 or higher
  • Chrome 2.0 or higher


  • Computer with an Ethernet network adapter
  • Ethernet switch or router 10/100/1000 (Mb/s)
 Important info:
  • External forces such as network activity, hardware, distance, and setup can affect your NAS’s performance.
  • For optimal performance, use Gigabit Ethernet equipment.