Knowing UUID is quite essential if you wish to mount the drives using /etc/fstab especially for more current version of Linux. The advantage of using UUID is really identify the disk correctly and mitigate mounting issues caused by reordering of HDD
First thing first, you may want to list all the detected devices by UUID
# ls -l /dev/disk/by-uuid/
To list the UUID of a particular disk For example /dev/sdb1, you can use blkid command
# blkid /dev/sdb1
Much thanks to fstab with uuid by Linux by Example
