What I meant with enabling S:M.A.R.T. is, that it's always a good idea to uses this, because you will be warned on the BIOS startup screen, if something went wrong with the hard drives.
Mostly, when one gets a message from the S.M.A.R.T. system, one can get a backup of the whole drive or at least the necessary data and also in most cases, the hard drive dies within a few hours or days.
But anyway, PaulPaul can figure out, whether there is a problem on the hard drives in a simple way.