Meh. Frankly, I don't really trust drives with built-in encryption. Many of them have poorly-implemented algorithms (some actually just use XOR... yes, I'm serious), and I have no way to verify the operation of the ones that do claim to use more advanced crypto.
I tend to trust software crypto a lot more, esp. when it's seen the level of analysis that things like Mac OS X's encrypted images and TrueCrypt have.
Meh. Frankly, I don't really trust drives with built-in encryption. Many of them have poorly-implemented algorithms (some actually just use XOR... yes, I'm serious), and I have no way to verify the operation of the ones that do claim to use more advanced crypto.
I tend to trust software crypto a lot more, esp. when it's seen the level of analysis that things like Mac OS X's encrypted images and TrueCrypt have.
+1. I remember discussion about a drive a while ago questioning the onboard encryption on one drive. Source here. I'm pretty sure the drive maker has corrected it though.
Personally, I like packing my own parachute, so I much rather use something very secure like TrueCrypt. I then place the TrueCrypt container in a sparsebundle volume so Time Machine can back up bands as opposed to the whole container when stuff changes.
For archiving of data, I can use StuffIt Deluxe which has AES encryption built in.