On second thought though, I can name at least one service with a 100% uptime:
DNS roots.
There are so many mirrors of them, and the multicast/anycast routing they use, makes it so that a failure is nigh undetectable by end users because client applications and backend routing will automatically adapt to any faults.
I guess it is possible, cloudflare offers a service that they say would give you 100% uptime, though you have to pay big..
They too don't offer 100% uptime (in fact, the entire CloudFlare network has gone down before), and their services really only work for static content, as it serves cached data during downtime. If your physical server is down, CloudFlare won't do anything to help. Sure, it might serve static pages from cache, but what good is that? Is there any website out there these days that doesn't use dynamic content? You'd be hard-pressed to find one.
And yes, they do offer 100% uptime
Really? Then can you explain the downtime their entire network had just a couple months ago???
Secondly, this thread isn't about "dos protection layer 7", whatever the heck that is. As I already mentioned, CDNs cannot serve dynamic content. They simply cache content from your server. If your server is down, nothing is going to work, period.
What does this mean for a host? Cloudflare will be serving static content of your site, but clients will not be able to log in to cPanel, check their email, send email, use FTP, purchase your services, etc. Is that really considered 100% uptime because some static content will be served? You've got to be kidding me! I'm sure it looks great for the stats you give people, but your clients will be gone. You seriously need to research what CDNs do and how they work.
But clients will not be able to log in to cPanel, check their email, send email, use FTP, purchase your services, etc.
1st. Downtimes ARE usually caused by DDoS, well then cloudflare's a good solution for it.
2nd. I too do not know what DoS protection layer 7 means, but it sounds convincing, try reading the description of that protection layer SH!T.
3rd. Cloudflare has a lot of features not just caching static contents, they have rocket loaders to speed up your page loads, Asynchronous resource loading to optimize your HTML contents, actually they do have tons of features you can use for your website optimizations. May it be security modules, optimization modules, etc. etc.
4th. The 100% uptime only applies for business and enterprise cf accounts, did you checked the link I posted ? It says:
"Service Level Agreement (SLA) - 100% uptime
Industry standard SLAs often feature 99.999% uptime, also known as the five 9s. At five 9’s your website could be offline for as long as 5 minutes and 26 seconds each year. All CloudFlare Business and Enterprise plans offer guaranteed 100% uptime because we know that anything less than 100% is an impediment to your organization’s success."
https://www.cloudflare.com/business
Uptime checker records 99.999% as 100%
5th.
I do not know if you're joking or something, just simple remove the TTL/NS for cPanel record then that's it. ACTUALLY they still can access the cPanel, they just have to simply go to cpanel.URLHERE.com or throught the dedi IP.
6th. OP was just asking if 100% uptime is possible, I answered him with the yes through CF as the solution.
6th. OP was just asking if 100% uptime is possible, I answered him with the yes through CF as the solution.
And again, you are completely incorrect. CloudFlare has had plenty of downtime (on the business/enterprise level as well). I don't think you understand what an SLA means. It means that if that number (in this case 100%) isn't reached, they refund a portion of your money. It doesn't mean they actually achieve 100% uptime. I have 100% SLA from every one of my datacenters as well, but they still have occassional downtime for network maintenance, etc.
Coming from a host (judging by your name), it's kinda scary you don't understand that.