You must be aware that when you backup the server at the remote sire, the data flow from the remote server to the media and then back to the NAS which is connected to the server at the remote site.  You ae using your VPN tunnel twice.  It may be better if you back up to the NAS at the central site.

Yes I would agree with you on that. But I am trying to backup central site servers from the central site to an offsite storage device at the remote site via a VPN tunnel.

If you only have servers locally and want to backup to a NAS, then data flows once across your VPN. In this case, your link must be strong enough to handle this traffic, but it would be possible.

You could either backup to a \\Share where your B2D is hosted, or if the NAS is capable of iSCSI, then carve out iSCSI LUNs, present to the media server and create your B2D there. Using iSCSI does away with potential authentication errors you might get when connecting to a share on a NAS.

Thanks!

I have been doing a little bit more checking. Would it be better for me to also have a media server at the remote site too? I'm thinking that the communication between the servers would be more direct and it would also use compresssion.

As Craig said it still comes down to your throughput. Having a media server at the remote site will really work better for you if your backup clients were at the same site. In this case it won't matter.