uptime of the host

Generally I would say around the 99% mark, but you never know as there can be several types of issues.
 
Average *shared-hosting* server uptime (across all systems)
* 100% (last 3 months)
* 99.93% (last 12 months)

100% network availability for over 5 years
 
100% uptime is becoming more and more available as well on some networks. Cloud also manages to be able to claim 100% uptime. Yet, even the best systems can fail. 100% will begin to become a more standard claim.
 
100% whatever the claims may be.. it just does not exist. Yes, you can stack backup on backup on clouds but it wont get you 100% uptime. I'm actually afraid that some hosts will claim 110% uptime in the future. All you (the host) can do is get premium multihomed bandwidth and good solid hardware. Our newest server is running for 11 months straight now. Not a single second in downtime but i will NOT claim an unreasonable uptime percentage based on that.
 
I think 99.9% is more than adequate for most websites (IMHO). Honestly, if your website can't afford to ever go down (not even for 1 min.), then you need to be paying top-dollar for 100% redundancy and NOT use shared hosting in the first place. :thumbup:

It still baffles me when I see people cry that their website is critical and they can't afford to ever have downtime because they make $xxxx daily from said website(s), yet they use a $5/mo shared hosting account to host such an "important" website... :shocked:
 
Sorry but calling 100% is insane, its trying to predict the impossible. Anything can and will at some point happen to a host. I have yet to see anyone claim 100% without having a poker face on.
 
100% uptime within a certain time frame (1 year for example) is absolutely possible. When we discuss uptime it is important to specify the level of service. It is very different for Shared, VPS, Dedicated and other kind of virtualized (Cloud) infrastructures.
 
100% uptime is nearly impossible. 5ESS Telephone switches were designed with 99.999% uptime over 40 or 50 years, which amounts to a few seconds a year of downtime. However there was a lot of redundancy built into those systems to ensure that.

Network reliability in the datacenter can be at 100% if designed correctly, but once your connections are in any kind of range of a backhoe that reliability can go out the window. Even a datacenter that brings in fiber from two different directions who did not do their homework to ensure those connections never share a facility to their final destination are at risk of an outage someday.

TCP/IP was never designed for 100% network uptime, it was designed to make sure the packet arrived in one piece.

Trying for 100% server uptime is not really good in the long term, eventually a reboot needs to be done unless you're looking to find one of those uptime bugs that may strike after so many days which can be disastrous. A reboot every 6 months is generally a good way to flush out any bad memory and also let fsck do it's thing every once in awhile.
 
100% uptime may be a struggle in the long term, but with the rate that technology is evolving 100% uptime can be achieved for longer periods than it could 5 years ago.

100% uptime is fuly possible for 1 day, 1 week, 1 month, 3 months, and possibly 12 months now, any longer can be a struggle but not impossible with the correct hardware and setup
 
To have exactly 100% up-time is impossible or maybe it isn't but I never seen 100% up-time and I am not talking about anything lower than that..... Now 99.0% - 99.89% is understandable and is possible. I personally think every year a server expects atleast 1-3 mins of downtime due to anything could be upgrades or just a natural reboot.
 
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