Changes to Nano Server in Windows Server Semi-Annual Channel
Applies To: Windows Server, Semi-Annual Channel
As described in Window Server Semi-Annual Channel Overview, Windows Server, version 1803 is the latest release in the Semi-Annual Channel.
If you're already running Nano Server, this servicing model will be familiar, since it was formerly serviced by the Current Branch for Business (CBB) model. Windows Server's new Semi-Annual Channel is just a new name for the same model. In this model, feature update releases of Nano Server are expected two to three times per year.
However, with this release of Windows Server, version 1803, Nano Server is available only as a container base OS image. You must run it as a container in a container host, such as a Server Core installation of Windows Server. Running a container based on Nano Server in this release differs from earlier releases in these ways:
- Nano Server has been optimized for .NET Core applications.
- Nano Server is even smaller than the Windows Server 2016 version.
- PowerShell Core, .NET Core, and WMI are no longer included by default, but you can include PowerShell Core and .NET Core container packages when building your container.
- There is no longer a servicing stack included in Nano Server. Microsoft publishes an updated Nano container to Docker Hub that you redeploy.
- You troubleshoot the new Nano Container by using Docker.
- You can now run Nano containers on IoT Core.
When the Insider Program starts, find more information in the Windows Container Documentation.