Hi and thanks for reply.

When everything were working, I had only 1 raid set 00.
Now I have 2 Raid set 00. (this is wrong)

The missing disks of the first Raid 00 (disk 2- disk 3 - disk4)
are in the second Raid set 00.

How I can bring back Raid set to initial condition?

Best Regards
Nanni