I've bought three over the last two years, and only one of them has lasted longer than 18 months. I think one of them may have been damaged in a fifteen hour flight, but it still works (albeit too slow to the point that it's unusuable.) My .5 TB monster just died last week, which had almost all of my video files from the last year, totaling 300 GB in data loss. What can I do to avoid such situations? Should I maybe get a 1 TB disk for everyday use to replace my .5 TB disk, then a 2.5 TB disk (or bigger) just for backups? What sort of backup software should I use? (not Time Machine, I'm not interested in backing up my entire computer several times, just my FCP files.) How long do external hard disks last for you? Is your luck with them better or worse than mine?