Onan, what sort of volumes are you talking about? Is this "free" web space? If not, wouldn't it be better to increase your local storage capability, now that space is relatively cheap? Perhaps an opportunity to build in more resilience, extra drive etc.
IMHO main reason for using web space, is to share with others.
Are these files important to you? Remember they will be unavailable in the "rare" event that you have problems connecting with your ISP!