web hosting reliability

[suwunk]

The availability of a website is measured by the percentage of a year in which the website is publically accessible and reachable via the internet. This is different than measuring the uptime of a system, as uptime refers to the system itself being online, however does not take into account being able to reach it – as in the event of a network outage.
Check it out!
Reliability & Performance You Can Trust | myhosting.com (http://myhosting.com/exchange/reliability.aspx)

[BigTimeHockeyMom]

When people talk about a web hosting company's "reliability," are they mainly referring to uptime, or are there other factors involved here too?