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No, server certs are not bound to the server. You can simply copy/move certs around between servers. In a load balanced environment you would be using the same certs on the different web servers. In a backup scenario you can use the same certificates.
I keep getting this error how do I fix it?
[Thu Jan 26 19:13:25 2012] [warn] RSA server certificate CommonName (CN) `domain name' does NOT match server name!?
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References
https://help.ubuntu.com/10.04/serverguide/C/httpd.html#https-configuration - trying this one first.
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