Hard Disk Failures

[Dennis Kubes]

Can anyone who is running large clusters (50+) tell me what you are 
seeing with hard disk failure rates.  Something that we are seeing is 
that certain machines will consistently have double or triple the load 
of other machines with the same tasks.  I believe that it is due to some 
hard disks beginning to fail, just wanted to know if anyone else is 
seeing similar behavior?

Dennis Kubes