Filesystem            Size  Used Avail Use% Mounted on
/dev/md3              721G  3.5G  681G   1% /
udev                  3.9G  8.0K  3.9G   1% /dev
tmpfs                 1.6G  856K  1.6G   1% /run
none                  5.0M     0  5.0M   0% /run/lock
none                  3.9G  328K  3.9G   1% /run/shm
/dev/sda3              59M   50M  5.6M  90% /boot