I use RAID 1 but when i do restart or turn on system , after post and in RAID status, system show Smart Event with yellow text for one of hard disks.
I have formatted HDD that show smart event but the problem doesn't solve.
S.M.A.R.T. = Acronym for Self-Monitoring, Analysis and Reporting Technology
It is detecting something wrong with one of your hard drives.
Download "HD Tune Pro Trial", that will tell you a report of whats going on. http://www.hdtune.com/download.html