I have uploaded an article on wbitt.com. Re-producing it here for your comments.

Easing your web-hosting life with XEN Virtualization.

For all system administrators, there is a (pretty painful) frequently occurring incident, which they hate the most. That is: Migrating a server, for one reason or the other!

For those who still couldn’t get it, assume you have a fully functional web/mail server working flawlessly for more than two years (which you take pride in). One morning, you find a mail from your service provider, that the server you were using for your web/mail services, has reached end-of-life (EOL) and it is advised to move your services to another server. There may be other reasons too, like faulty hardware, such as hard drive crash, etc. You quickly feel your stomach throwing up, because you recall, that how much pain it was to setup qmail, anti-spam, the Apache web-servrer with all those extra modules and MySQL tweaking, hosting 200+ websites, mail boxes, etc etc. And now it is obvious that you have to redo the whole thing again. (Oh my God!). Plus the migration. If it was your own personal server, it might not be such a gruesome picture. However, if this is one of your clients’ server, then you might be cursing yourself to be a system admin at the moment. It is not fiction! This happens to every sys admin. For some (strange) reason, the system admin throws his head down again, and starts building up the new server.

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