Backing up 200gb project

[Liam Carlin]

Hello all,

I know this will have been covered many times but i cannot seem to find the answer or i have it and am just being silly,

i have just recently worked on a project that is 200gb. it is stored on one freecom 400gb hdd and i just wondered what the best way to back it up would be? would it just be a case of another external hdd or are there any other ways?

Thanks

Liam :)