Online Backup Proiders and Hyper V support

I am looking at changing from a local tape backup solution to a Online Backup Provider. The driver is a change to using MS 2008 with Hyper V Virtual Servers. I want to back up the Virtual Machines in their entirety to Removable NAS storage and critical date with teh Virtual Machines to an online source along with the Controlling 2008 servers.

Looking around there appears no-one who provides this functionlity.