[CentOS] Hardware raid health?

I just had an IBM in a remote location with a hardware raid1 have both
drives go bad.  With local machines I probably would have caught it
from the drive light before the 2nd one died...  What is the state of
the art in linux software monitoring for this?   Long ago when that
box was set up I think the best I could have done was a Java GUI tool
that IBM had for their servers - and that seemed like overkill for a
simple monitor.    Is there anything more lightweight that knows about
the underlying drives in a hardware raid set on IBM's - and also
recent HP servers?

-- 
   Les Mikesell
     lesmikesell at gmail.com