Should I Choose Windows OS or Linux OS for My ECS?

Difference Between Windows OS and Linux OS

The following table shows the difference between Windows OS and Linux OS. Select an OS based on your service requirements.

**Table 1** Differences
OS	Developer Language	Database
Windows	ASP.NET, MFC and C#	ACCESS and SQL Server
Linux	Shell	MySQL and SQLite
Both Window and Linux support developer languages HTML, C, Java, and PHP.

Windows OS

Windows Server 2012, Windows Server 2016, and Windows Server 2019 have some advanced features, such as network performance and system compatibility optimization. For the best performance, Windows Server 2019 is recommended.

Linux OS

There are a variety of Linux versions. You can select an appropriate version based on your service requirements.

OS Change

If you want to change the OS of your ECS, perform the following operations:

Select the target ECS and click Stop in the upper left corner of the ECS list.
Locate the row that contains the target ECS, choose More > Manage Image/Disk/Backup > Change OS in the Operation column.
The Change OS dialog box is displayed.
Select the target image type and image.
Set the login mode. You can select Password or Key pair.
Set the other parameters and click OK.
After the application is submitted, the ECS status changes to Changing OS. The OS changing has been successfully completed when the ECS status changes to Running.