Which of the following is NOT true about Just a Bunch Of Disks $($JBOD$)?$

Question $22$ options:

Two or more disks are abstracted to appear as a single disk to the OS

JBOD isn't arranged in a specific RAID configuration

JBOD allows the addition of a physical disk to a storage pool, with existing volumes growing into the new space as needed

JBOD supports the addition of external disks from different vendors