[Q] How to check bad I/O block on disk???

[bbaa aaa]

I checked our ORACLE database log and found "I/O error on block".  I like to 
check all the local disks and SAN disks no "bad block".  Does there has way 
to do it?  The RedHAt version we user is AS 2.1

_________________________________________________________________
Add photos to your messages with MSN 8. Get 2 months FREE*. 
http://join.msn.com/?page=features/featuredemail