Solstice Backup / OnBar Setup

We're currently using Solstice Backup with OnBar to backup 2 large OLTP databases. We have both database servers running their own Solstice Backup server and client, with their own tape library attached. We were considering changing our setup to have a single Solstice Backup server installed on a 3rd machine, with the 2 tape libraries attached to it instead. We would then setup a private gigabit network between the "backup server" and the 2 large database servers, running the backup over the private gigabit network to the 2 tape libraries on the backup server. I was wondering if any of you are using a similar setup? The goal of the above strategy would be to allow us to backup any system to the 2 tape libraries, not just the 2 large OLTP databases, by simply putting any system on the private gigabit network. Is anyone doing something like this? -FPL