Ok that must be a commen misconesption because most of the time you hear about people trying to get really long uptimes and hosts are always saying they have 99% uptime and things like that.

You can still have 99.9% uptime and reboot your server as many times in a month as you need. It takes what 2 minutes tops for your server to reboot. I am not sure on the exact amount. But I am pretty sure 99.9% uptime is 1hr+ down time per month.

Edit: Those servers with 100+ days of uptime are very insecure servers. You want to update your server as much as possible. And its best to do it early morning. When there are few users on the server.

But you do not have to restart the server for all updates do you? I know you have to restart the services or unless it is a kernal update then you have to restart.

This is true you don't have to restart the server for all updates. But a new kernel comes out pretty often. If you keep up on the latest kernels. Your never going to make 100 days uptime. ;)

OK. But if a service is updated then you have to restart that service for the change to take affect?

Yes if a service is updated all you have to do is restert the service for it to take effect. :)

OK. Thanks for the help.