Raid5 creation failure

Hello everyone,

I tried to create, with the sata hat, a Raid5 with 3 hard drives of 1 TB. The process starts, but after few moments, it stops and at least two of the hard drives change name.

The hard drives before:
Hard%20disk%20prima

The command I used and the output during the process:

The output after stops:
dopo

And the name of the drive after it stops:
hard%20disk%20dopo

I can’t find no clue of what happened.

Thank you very much!