I've got two crucial servers, each located at a different datacenter, that I will have resolving to one domain. I will need a carbon copy of each server's hard drive on the other server at any given time. Meaning, each server is an instant backup of the other server; the hard drives on each server mirror each other at all times.

What's the best way to accomplish this?

Thanks,

--JCA Justin

As long as the content is static (not DB driven) and the content doesn't update that often, it is pretty easy.

Use rsync:
http://samba.anu.edu.au/rsync/

Originally posted by janderfox
I've got two crucial servers, each located at a different datacenter, that I will have resolving to one domain. I will need a carbon copy of each server's hard drive on the other server at any given time. Meaning, each server is an instant backup of the other server; the hard drives on each server mirror each other at all times.

What's the best way to accomplish this?

Thanks,

--JCA Justin

This depends on your application, but it is not it's usually done. Access logs for example doesn't have to be copied.

If it is a database application, you might wanna check your database system for "replication". It is is a feature that allows you to do that. Then all you need to copy from a machine to the other is the data in the database. All the other files are just system files and programs that are copied manually when they are changed.

Thanks to the both of you.

Well, the information is dynamic, not static, using MySQL. Does MySQL have the replication feature avaliable?

Thanks,

--JCA Justin

On Win2k - Try Octopus (think it is called Replistor) from Legato - Bit pricey but does a good job and is industrial strength.

Try this link:

http://www.mysql.com/doc/R/e/Replication_FAQ.html

I haven't read this page or used replication before, so might also want to search the manual for more about replication.

Make sure you use rsync over SSH!