Uptime is the amount of time your website is fully operational for use.
When choosing a hosting company you want to make sure that you get the maximum amount of uptime possible, this will impact how often your website is available for use.
Since Uptime represents the amount of time your site is available for business, viewing, updating, etc., choosing a webhosting provider that cannot guarantee their 99.9% uptime promise is an easy way to have your website fail.
Many providers don't have their own data centers, and have little or no control over their environment, their networking, or their equipment. Not only do we control our own state of the art data center in the US, but our entire company is housed right alongside systems administrators, customer relations, marketing and all.
At IX Web hosting we have our own tier 3 (n+1) redundant data center... that means we have everything that's required to maintain the maximum uptime possible + 1 extra back up for all your data, so if one of the servers power source gets heated it will automatically transfer the power to the extra power source and this way your site is able to have maximum uptime.
And in case of any extended commercial emergency power outages, we have two industrial diesel generators standing by, which can run for 24 hours.