Quoting Mike Kercher <mike@xxxxxxxxx>:
I am about to lease another server to be a backup web/mail server with a replicated mysql database. The current live server is a dual Xeon 2.8Ghz. Would I do better to get another Xeon server or an Opteron based server? My concerns are compatibility of the database and the SSL certificate currently running on the Xeon machine. Are these concerns unfounded?
If compatibility of MySQL database and certificates are your only concerns, it doesn't matter what you get. You can even get something with UltraSPARC or Alpha processor. Or you could get Cray supercomputer. It'll just work.
The certificates are normally just text files. You can move them between machines or operating systems, as long as name of machine (and/or IP addresses) match the names and/or IP addresses for which the certificate is issued. This would be whatever is stored in CN and AltSubjectName fields in the certificate. You can use "openssl x509 -in certfile.txt -noout -text" to dump out certificate in human readable format.
MySQL is just an application. If the hardware and OS are supported by MySQL, you are fine. Linux is supported on all Intel and AMD processors. So you are fine there.
There is only one thing to watch out for both Xeon and Opteron. If your current Xeon is 32-bit, and the new processor (even if it is Xeon) is 64-bit, *and* you install 64-bit version of Linux *and* 64-bit MySQL binaries, you can't just copy binary database files to the new machine. It probably won't work. Well, maybe it would, but I would very strongly recommend against it. Use mysqldump to dump database into file, and re-imort it on new machine. Or setup replication between two machines. This is recommended even when moving database between two identical machines anyhow.
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