marek
Thanks @Satoshi !
In this case it was RAID5, there was a good chance that it could be rebuilt. I just needed to find the right disc model. And that was the biggest problem.
Personally, I make an additional one-to-one copy on an external USB disk once a year. And in my home storage system I have two disks in RAID1 :)
Satoshi T You did well! I once stored my photo data in a RAID 01 configuration, giving priority to speed😎. But two stripes were broken at the same time💥 !! So I lost my data 😖. After that, I never use RAID 01 configuration.