\Device\AFA0 : SMART WARNING: & PERC 3/Di Controller 0

Can anyone tell me what the following two errors indicate?

They are showing up in my event log every 30 minutes or so.

I listed the error for disk 0, but i'm also getting the same errors on disk 1 and 2.

I have a poweredge 2500.

Thanks

ERRORS BELOW:

PERC 3/Di Controller 0

On Array Disk 0:0 the failure prediction threshold exceeded due to test-No action needed.

&

\Device\AFA0 : SMART WARNING: ID (0:0:0)=FPT_EXCEEDED(Test)