Create volume groups combining multiple mass-storage devices. See also: lvm. More information: https://man7.org/linux/man-pages/man8/vgcreate.8.html.
lvm
/dev/sda1
vgcreate vg1 /dev/sda1
vgcreate vg1 /dev/sda1 /dev/sdb1 /dev/sdc1