I'm not sure if having a hard copy of irreplacable data would count as a back-up to most people, but it does to me[1] ;) My Part II thesis now only exists as a hard copy due to computer death.
Is irreplacable still irreplacable if it was unique but you don't really care that you lost it? Just out of interest :)
[1] But yes, I'm a techless artsy type who's compiling PhD data by hand anyway. In fact, the most irreplaceable things I have are photos (meticulously backed up on CDs) and stories (not backed up, but usually swimming in cyberspace somewhere retrievable).
no subject
Is irreplacable still irreplacable if it was unique but you don't really care that you lost it? Just out of interest :)
[1] But yes, I'm a techless artsy type who's compiling PhD data by hand anyway. In fact, the most irreplaceable things I have are photos (meticulously backed up on CDs) and stories (not backed up, but usually swimming in cyberspace somewhere retrievable).