There were lots of posts on here about people buying external hard drives, "Shucking" them and using them internally when prices skyrocketed due to the flooding.
An interesting post on how Backblaze dealt with the situation - They needed a dozen of these a day and plenty of stores had a 2-drive limit or were sold out.
http://blog.backblaze.com/2012/10/09/backblaze_drive_farming…
Now that was a very interesting read!