pw@studiopulto-ubuntu-1:~$ sudo fdisk -l /dev/md0

Disk /dev/md0: 3,7 TiB, 4000526106624 bytes, 7813527552 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 524288 bytes / 1048576 bytes