>>385617
>When you build a cluster like that, you don't need to put all the servers in one data center. It is the software and the network communication between the computers that makes them useful. So if they are not all in one location it can be challenging to turn off or take over a computer like that.
Yes, the 'connected' servers which make up the cluster could be physically located anywhere. One here, one in North Korea, one in Switzerland, etc. etc. and the software manages the relationship. With redundancy, if you unplug one in Switzerland, for example, it's backup in say Kenya becomes primary and there is no interruption whatsoever. Aside from killing the software with a virus or getting command over the program, there is no easy way to stop such a cluster.