Check to see if smartmontools is installed

rpm -qa | grep smart

# You should get the following or similar result:

If it is not installed then run:

apt-get install smartmontools

Edit /etc/smartd.conf :

If it doesnt exist copy the sample like this:

 cp /usr/share/doc/smartmontools-5.33/smartd.conf /etc/smartd.conf

Add or change the following lines to look like this:

/dev/hda -a -r 194
/dev/hdc -a -r 194

Adjust Accordingly to the number of hard disks on your system. If you have a RAID/SATA drive it might look something like this:

/dev/sda -a -r 194

Proceed to PDC Docs "Reboot machine so only necessary services are running."

PDC Docs