Thanks for the answer.
Although it is strange to me why installing the OS on the SSD does not speed up the boot.
Still, I can try it in practice.
I am just wondering if the data on the RAID HDD will be saved and if the NAS will be able to work with it after installing on the SSD?
And another question.
Before TS-462, I had a QNAP HS-210.
It was not audible at all.
With TS-462, the HDD is constantly audible.
I read the questions in the thread M.2 NVME Caching on a TS-262 Nas
where you answered the user.
There, the user said that after installing the OS on the SSD, he got a very quiet NAS.
QUESTION: Can installing the OS on the SSD stop the HDD from constantly working?