Not mounting after restart?

I am mounting a drive via SSH, and then editing the fstab to reflect the changes, however after I reboot, the drive doesnt mount? I dont understand what I'm doing wrong? This is my fstab and its /md0 that isnt mounting after reboot, am I missing something? # /dev/md4 / ext3 errors=remount-ro,usrjquota=quota.user,jqfmt=vfsv0 0 1 /dev/md0 /BACKUP ext3 defaults 0 1 /dev/md1 /boot ext3 errors=remount-ro 0 1 /dev/md2 /var/tmp ext3 usrjquota=quota.user,jqfmt=vfsv0 1 2 /dev/sda3 swap swap defaults 0 0 /dev/sdb3 swap swap defaults 0 0 proc /proc proc defaults 0 0 sysfs /sys sysfs defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts defaults 0 0