I was reading a post about how some one had a second BM server configured to act as a "Backup" BM Firewall server incase the primary failed. I wanted to verify that this is the proper way of configuring it.

Currently I have a second BM server that is just running VPN services. If I configure all the Filter and Proxy settings on this server to mirror the current BM Firewall and Proxy server then all I would have to do to bring this one "online" as the "Primary" would be to issue the "SECONDARY IPADDRESS x.x.x.x" command on the VPN server and it would start processing as if it were my BM Firewall and Proxy server?

What about all the services I configured on the VPN server, would they cause my VPN server to slowdown? Would they cause it any problems?