Hello, I am wondering if it is possible to set up a "backup website"! In case the server or host of your website is down, and instead of getting the message: "connection timed out" (or sth. like that-not possible to connect), the same website would come up, from diferent host for example. So basicly webiste http address would have to redirect or open a mirror in case the primary server is down? Possible? And mybe where to learn how to do it?
Learn about DNS pools. Shortly, your DNS server has 2 IPs (primary and secondary HTTP servers). On resolution requests it returns either primary or secondary IP, if one of servers goes down, DNS returns only working IP.