after the two disk-related papers at FAST07 from Disk Failures in the Real World to Google's Disk Failures, netapp responds to disk failure.
RAID5 is crap, SMART isn't, MTBF is a lie, and consumer-grade disks are A-OK.
I don't know what that means for the gigantic gaggle of ancient hardware in my basement, but certainly I'll grind it until it gives up...