– How are servers maintained/repaired? When a server gets taken down for maintenance, what happens exactly?
In: Technology
For the most part, it’s updates. Like when your own laptop nags you for a reboot. Some updates to the OS can’t be made while it’s running, so get scheduled to be done over a restart. While this isn’t usually a massive problem on your laptop, a server obviously can’t “serve” while it’s restarting. In a well-designed system, multiple servers would share the load of serving, so that any single one of them could be taken down for a reboot without taking the whole system down. However, there are circumstances in which you’d still need to take down all the servers – for example if you needed to update or fix the mechanisms that run the servers, or if the update you need to apply has to be on all servers at the same time because it changes the way they talk or fulfill their function as servers.
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