Step 1 - Buy a VPS with 50gig or so in storage, linux ones work great for this.
Step 2 - Session your data (unless you want BMR) to the VPS and store it there. SSH, FTP, SFTP, there are even some nice web-based PHP front ends that you can use if your using a unix based VPS.
Step 3 - Repeat step 2 every couple of weeks.
lowendbox.com is a great resource for this.
_________________
An Old NetSec Engineer. Diag 11/29.
A1: AS 299.80 A2: SPD features 301.20
GAF: 50 - 60 range.
PMs are fine, but my answers are probably going to be weird.