[pm-h] study of disk drive longevity

[rlharris at oplink.net]

http://blog.backblaze.com/2013/11/12/how-long-do-disk-drives-last/

This is an interesting real-life study  (bank of 25,000 drives on-line
24/7) which, incidentally, explains why drive warranties typically are
1-year or 3-year.

RLH