HDD S.M.A.R.T what to monitor parameters

Hello All.

Some time ago discovered exidently that one of my HDDs show S.M.A.R.T alarm with KillDisck(free version) software, I started to deap what is this mean and found this page where can discover what parameters are realy mater and show that disck can die soon.
https://en.wikipedia.org/wiki/S.M.A.R.T.

So I sujjest all SNO time to time check S.M.A.R.T parameters to discover if HDD start to die.

You just reminded me to re-check all my hard drives !
Maybe a short recap of the most important parameters to look for would be good for people with a bit less experience (and willingness to dig into it).

ling i provided has all needed information with marks that are realy maters.