I'm planning to set up a large (probably 6-9Tb) raid-5 array on ubuntu using mdadm, lvm and ext3. Does anyone have any opinions or suggestions on the safety of using a Truecrypt volume for that amount of data with this setup?
I have had a windows Vista laptop drive using Truecrypt whole-disk (System) encryption fail once, however that time I was able to boot off an ubuntu live-cd, save an image of the entire disk to a server over the network using the excellent ddrescue (or was it dd_rescue?), then decrypt the image using truecrypt on the server. It took a long time but I was able to recover almost all of the files. I think I was lucky in that case. Things would be very different with 9Tb of data to copy! Of course, none of this was truecrypt's fault, but encryption certainly adds an extra step to data-recovery.