Vista Tutorial - Hyper-V Backup/Restore on another computer

Hello everyone
I am currently trying to create a backup strategy for our network.
I know that in order to move a hyper-v guest server from one host to
another you have to use the export command in order to move it. I am
currently using Windows Backup to backup the hyper-v gues and have
sucessfully restore the virtuals on the same machine. But my problem
is that I cannot restore the same virtual to another Hyper-V server.
This is quite promblamtic for me because if one of our Hyper-V servers
fail. I would like to quicklly migrate our virtuals over to a second
Hyper-V server. And importing/exporting is not a option since the
virtuals need to be online 24/7 Does anyone have any ideas as a good
way to restore a virtual on another server without using import/
export?
Thanks for your help !