Hi Greenapple,
I'd also recommend perhaps backing the same files on another hard drive or an online service as well. Just in case you lose, drop, bash the HDD you'll be carrying. I've come across way too many times over my IT career where files haven't been backed up and safeguarded and individuals, and business have lost out - sometimes to the extent businesses have failed as a result of lost data.
Depending on how much 'irreplaceable' data you have, consider other backup locations of your files. Maybe copy files to blank DVD disks, other flash based storage and online facilities.
Cheers, DtM! West London & Slough UK!