lshw -class disk -short
apt-get install smartmontools
cat /proc/mdstat
smartctl -c /dev/sda smartctl -t short /dev/sda smartctl -t conveyance /dev/sda smartctl -a /dev/sda
smartctl -c /dev/sdb smartctl -t short /dev/sdb smartctl -t conveyance /dev/sdb smartctl -a /dev/sdb