First off, I don't want any crap about data recovery, I've exhausted that topic here: http://forums.anandtech.com/showthread.php?t=2161566 and never recovered more than .1% of the data I lost, but since they were backups I'm moving on. I want to know why GPT disks are so weak that they will lose their format at the drop of a hat. If no one has any idea, then has anyone else at least experienced this? Essentially, during normal operation (copying to or from), windows will report "error directory does not exist" or whatever, and as soon as I look at the drive it is still mounted with a letter, but just says RAW data and "do you want to format". I am running an SAS server using the ever popular HP expander and an LSI controller: http://hardforum.com/showthread.php?p=1036585197 It has worked nearly flawlessly for maybe 7 months, but with two different 3TB drives, one Hitachi and one WD, I have had this format suicide occur and lost about 1500-2000GB of backed up data each time. I am quite frustrated that I can't seem to find anyone else saying the same thing, but I'm pretty confident that it boils down to the SAS system, since It occurred on two completely different drives, and I had replaced CPU, mobo, RAM, and PSU between times (data corruption worries and the upgrade itch). I plan to look into the SAS firmware, but I'm using the drives as MBR 2.2GB until I can trust them again. Has anyone experienced this? If so why isn't there an outcry against this suicidal technology?