Backup with HA

Hello All,

I am trying to find a way to have high availability while doing backups and restores. If I have 2 media servers with msdp, I would like to do a backup to any of them and duplicate to the other. It could be done using a slp with storage units, but if I choose a storage unit group for backup, how can I choose the partner for the duplication?

Any ideas would be appreciated :-)