On 21/10/17 16:43, Francesco Tomadin wrote:

Thanks to a guy on IRC after some check he told me to use

mdadm --assemble --scan
and IT worked! I can access again my drive!

Thanks for everythiing!

Do still do that "smartctl -x"! If your NAS dos have the wrong sort of 
drives in it, this is just going to happen again ... If it comes back 
and says SCT/ERC *is* supported, then your disks are good and you're fine.

Cheers,
Wol