EulerOS

EulerOS is a commercial Linux distribution developed by Huawei based on CentOS source code for enterprise applications. 
Huawei has released a community edition of EulerOS, OpenEuler, along with the source code on .
KunLun Mission Critical Server.
EulerOS 2.0, running on the Huawei KunLun Mission Critical Server, has been certified to conform to The Open Group's Unix 03 standard, being the only Linux distribution certified for Unix 03.
EulerOS/KunLun allows replacing central processing unit board modules and memory modules without stopping the OS. Hot swapping of CPU and memory is provided by EulerOS.