Encrypted Filesystems

Benchmarks
Benchmarks of Software RAID, DM-Crypt, Loop-AES performance.
DM-Crypt
Using the crypt target in the Device Mapper of the 2.6 kernel in order to create an encrypted partition or loopback device. Easy to set up: works with stock debian kernel.
Loop-AES
Using the loop-AES filesystem encryption. Faster, more secure, requires custom kernel.