Full Disk Encryption

[J. Bakshi]

Hello,

I am always interested in Full disk encryption for my laptop ( i5 + 3 GB ), but what makes me stop
is the thinking of performance lag. Recently I have seen an ububtu laptop ( i5 + 4 GB ) with full
disk encryption and it is performing normal, haven't found any lag...

So I am interested to give the FDE a try on my own laptop. How can I proceed ? My laptop is debian wheezy
with lots of important data.. so backup is must.. but what next ? What configuration will give me a better
performance , LVM based or simple partition based ? Presently excluding swap I have 3 reiserfs partition for / ; /home
and /movie ... no LVM. Please sharing your experience

Thanks