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  Post #31 (permalink)   02-25-2012, 12:32 PM
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Quote:
Originally Posted by Artashes View Post
Wouldn't cloud hosting guarantee 100% uptime, if connected to multiple network providers?
No, and with most "clouds" just being cheap VPS with no real "separation" between users, your uptime can be directly affected by factors way outside your control.

100% uptime is possible assuming no other requirements to reboot/restart on dedicated hardware - we had a cobalt raq acting as 2ndary DNS which was up for over 5 years until we decomissioned it
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  Post #32 (permalink)   02-25-2012, 12:52 PM
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It's debated - I say not possible, look at Amazon when Minecraft 1.0 was released?
 
 
 


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  Post #33 (permalink)   02-25-2012, 01:43 PM
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Quote:
100% uptime is possible assuming no other requirements to reboot/restart on dedicated hardware - we had a cobalt raq acting as 2ndary DNS which was up for over 5 years until we decomissioned it
Even then, uptime depends on 100% availability of energy, 100% network uptime, neither of which is actually 100% stable. One natural disaster is all it takes.
 
 
 


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  Post #34 (permalink)   03-01-2012, 08:01 AM
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It depends on how much time its based on. The way i see it, during the time i've been typing this my websites achieved 100% uptime.
 
 
 


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  Post #35 (permalink)   03-01-2012, 12:28 PM
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Originally Posted by VLStream View Post
It depends on how much time its based on. The way i see it, during the time i've been typing this my websites achieved 100% uptime.
That doesn't mean others are able to connect to it. The network could be up but what happens if the other person ISP providers router can't find a path to the host of the website. Then you got routing issues and the client/viewer thinks the sites down. Tons of things play a role in this subject. Depends on the way you look at it and what your definition is of 100% uptime.
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Last edited by Aim2Colo : 03-01-2012 at 12:33 PM.
 
 
 


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  Post #36 (permalink)   03-01-2012, 02:43 PM
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Originally Posted by Aim2Colo View Post
what happens if the other person ISP providers router can't find a path to the host of the website. Then you got routing issues and the client/viewer thinks the sites down.
this scenario is the fault of the ISP as their router failed, but your site/server was up, so no downtime was recorded.

a good client would not argue the point if you can provide evidence the server was up as if they had router issues then this would 100% effect them viewing other sites and may even prevent them from connecting to the internet.
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  Post #37 (permalink)   03-01-2012, 08:28 PM
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Quote:
Originally Posted by Aim2Colo View Post
That doesn't mean others are able to connect to it. The network could be up but what happens if the other person ISP providers router can't find a path to the host of the website. Then you got routing issues and the client/viewer thinks the sites down. Tons of things play a role in this subject. Depends on the way you look at it and what your definition is of 100% uptime.
Happened to me at least a few times years ago when my local ISP has problems reaching the site, but that doesn't mean the server the website is on was down. However, I wouldn't take this against the web host provider as the responsibility clearly lies somewhere locally.
 
 
 


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  Post #38 (permalink)   03-02-2012, 12:08 AM
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With the data center I use from what I understand, 100% uptime is achieved because of several factors. Firstly, these data centers have backup generators that will run the entire facility in the event of power failure. They use redundant servers that run back to back, each retaining a copy of your site and running dual DNS. It's more complicated than that, but that's the short description. 100% uptime has no relevance to network connectivity or availability, it's dependent on your site simply being up 100% of the time.
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  Post #39 (permalink)   03-02-2012, 05:23 AM
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i had to laugh at a host-tracker report i received which stated my server was down 12 day(s) 6 hour(s) (see below) which i told them if this was true i would have noticed and i dare say i would have had some angry clients, so this is a false positive, but their reply was as more than 1 of their stations reported this then they were right and the server was down

[Delta Server] **.**.**.** now OK.

Current time 01/03/2012 04:43:41 PM

Operation restored at 01/03/2012 04:43:31 PM

London, United Kingdom - Ok
Istanbul, Turkey - Ok
Amsterdam, Netherlands - Ok
Noida, India - MostPingFailed (1)
San Jose, CA, USA - MostPingFailed (1)
Dallas, TX, USA - MostPingFailed (1)

Url was down as a result of:

MostPingFailed

First error was detected at 18/02/2012 10:26:23 AM

Last error was detected at 01/03/2012 04:43:31 PM

Downtime total 12 day(s) 6 hour(s).

Check failures total: 4822.
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  Post #40 (permalink)   03-02-2012, 08:34 AM
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Originally Posted by koddos View Post
I wonder if it's possible to provide 100% uptime, I mean server uptime?
I think there have been some providers who have had 100% uptime. It is by no means impossible but all key equipment must be in place and I think luck is a big factor. Like everybody mentioned above eventually it is all a time issue. Given enough time every provider will experience down time at some point. But 100% up time in a year I think is possible.
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  Post #41 (permalink)   03-07-2012, 02:47 PM
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Quote:
Originally Posted by TransIP VPS View Post
I think there have been some providers who have had 100% uptime.
They were lying then.

Quote:
Originally Posted by TransIP VPS View Post
It is by no means impossible but all key equipment must be in place and I think luck is a big factor.
It is impossible.

Quote:
Originally Posted by TransIP VPS View Post
But 100% up time in a year I think is possible.
No, it's not. Any reputable hosting company will not offer 100% uptime as it's unrealistic. Updates to hardware, software, and OS need to be done. That's going to cause some downtime but minimizes issues down the road. Hardware can crash or have faults. That can cause downtime. Internet connections can go down...

I could go on and on, but a good host does everything in its power to minimize downtime for its customers, but totally prevention in even the best data centers is not possible.
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  Post #42 (permalink)   03-10-2012, 12:55 PM
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As far as uptime of shared host or dedicated host is concerned , there may require reboot for server either for software upgrade (kernel), hardware upgrade or in case if there is network issue.

In such situation server uptime will certainly affected. But It is possible that you can achieve 100% uptime for week, month or for months.
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Last edited by storminternet : 03-10-2012 at 12:57 PM.
 
 
 


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  Post #43 (permalink)   03-11-2012, 12:43 AM
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100% is very difficult to achieve. If you need extremely high uptime, then start looking at geographically diverse redundant clusters.
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  Post #44 (permalink)   03-13-2012, 04:27 AM
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100% uptime is really hard to have but it's possible IMHO.
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  Post #45 (permalink)   03-13-2012, 09:27 AM
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It is possible but you have to have a lot of assets for it to happen
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