It’s not a Y2K bug but the enhancement and new innovations causing this. I found this story reported on ZdNet blog few days back. You might find it interesting.
While disks are incredibly reliable devices, they do fail. Our best data – from CMU and Google – finds that over 3% of drives fail each year in the first three years of drive life, and then failure rates start rising fast.
With 7 brand new disks, you have ~20% chance of seeing a disk failure each year. Factor in the rising failure rate with age and over 4 years you are almost certain to see a disk failure during the life of those disks.
But you’re protected by RAID 5, right? Not in 2009.