Web Hosting - % Uptime

What % of uptime is acceptable to you?

[percentages]

I would like some feedback on how webmasters/clients feel about hosting uptime.

Is 99% uptime good for you? Or 99.9% uptime good?

Is anything less than 100% uptime totally unacceptable to you?

How do you feel about how your sites should be represented by these third party hosts?

[iamlost]

Sheesh you folks must be tolerant.

There are 24hrs * 365days = 8760hrs in a (non-leap) year so...
99% uptime means over 87hrs downtime per year.
99.9% uptime means over 8hrs downtime per year.

Zero downtime is 'best' but realistically I require guaranteed/insured maximum 1-hr downtime per year (approx. 99.99% uptime). I find the premium for 100% uptime rarely cost effective. In practice that 99.99% is usually 100%. Which is nice.

Of course it depends on where a sites graphed cost of service and revenue rate lines cross. The less you make the greater tolerance you can afford.