I'm currently running a 5 or 6 year old backup of my web site. Luckily, the data is current, since I'm running nightly SQL Server backups, and since the site is mostly data driven, things are still mostly working. We had some construction in the house, and the server filled with dust causing one of the drives to fail -- the main data drive. Backups failed too, so I'm left with an old copy. It's possible that the problem was not the dust, but there was a LOT of dust in the machine. It's about 7 years old, so I was due for a new hard drive, but I'd rather control the circumstances myself.

Update: Hard drive restored, back to normal.