Strange thing happened today, I booted my MP and found that my Barracuda 1TB drive (mounted internally on sled 4) vanquished all of my archived files. To include several hundred apps., data files, photos, misc. documents, etc... I ran the DU and found nothing wrong with the drive. TechTool7 and DiskWarrior report no problems with the drive. When I powered the MP down last night, everything was fine and the drive contents were undisturbed. When I powered up today, it took longer than normal (slightly), and when I was looking for a file, I found the whole drive was empty. It's as if someone deleted EVERYTHING (but of course that didn't happen). Luckily (not really luck), I have multiple backups of all my drives, so it's just a matter of putting it all back. I just can't figure out how this could happen without any indications that the drive or file system is failing. Restoring 599GB now... EDIT: There is no stalling, access issues, or SMART errors prior to this incident, or after replacing the data. I'm still going to replace the drive though.