Thanks for the support, in the end I opened the server removed the raid smart array controller and connected the drives directly to main board. Checked within the BIOS and I see them perfectly.

If you are looking for a HPE P440ar Smart array controller to buy hit me up :)

I read online that the controller failure is a thing and not that uncommon. I really don’t want to rely on HP hardware tbh.

Well fuck me now I’m scared. So, for him the problem is hardware raid?

Mmm I personally rather avoid closed source software if I can. Afaik unraid is a whole os system that does all the work, so I also rather have different tools that do well their job than 1-in-all system. Decentralisation is always king. Plus I’m okay with not having a real time redundancy but just an easy snapshot system with Snapraid.