I would troll around for a good data recovery question that's already been thoroughly answered and make that one the canonical example.  We've answered the question more than once in the past

It gets a bit more complicated with Data Recovery as sometimes it's physical damage where other times it's accidental erasure, and the process for tape versus HD may be a little different (more you can try with tapes before shipping them off), so maybe something like the [Capacity Planning][1] question that then links to physical versus digital questions might be sensible...


  [1]: http://serverfault.com/questions/384686/can-you-help-me-with-my-capacity-planning