No matter how well the network architecture is designed, CDNs and anycast servers can support the network and maximize user experience. Did we say redundancy yet?

Microsoft Research India has developed host server technology for reducing redundancy on wide-area networks.

You probably want a combination of redundancy (which in your case would be some sort of RAID, but stay away from RAID5!) and backup. Your upload kinda sucks, so you need to think about what you ...