You only really need to worry about those things if you are with some cheapie one man army type host. If you run any kind of a serious business I hope you are with a well known, honest, established host that actually has a staff. A 1 man army can't help you when there sleeping or taking a shit...LOL
Just like aftershock media i also host with Techiemedia and because of that i can sleep well at night. They monitor all server 24/7 and typically catch and fix any major issues before i even know it happened. They also have a sweet back up option that backs up all my shit offsite and it's pretty cheap.
