Home
>
Web Hosting
>
How Multiple Server Hosting impacts your websites uptime

How Multiple Server Hosting impacts your websites uptime

This article describes the technology behind multiple server hosting and how you may utilize it to maximize your site's security and uptime

Hosting of web sites has essentially become a commodity. There is very little distinguishing one hosting company from the next. Core plans and features are the same and price is no longer a true determining feature. In fact, choosing a host based on the cheapest price can be more expensive in the long term with respect to reliability issues and possible loss of sales as a result of website downtime.

Selecting a host from the thousands of providers and resellers can be a very daunting task, which may result in a hit and miss approach. But although hosting may have become a commodity, one distinguishing feature that you must always look out for is reliability.

At the heart of any hosting company's reliability is redundancy. This ensures that if a problem exists at one point, there will be an alternative which ensures continuity as seemlessly and transparently as possible.

Most hosts do employ redundant network connections. These are the high speed pipes that route data from the server to your web browser. But, redundant 'multiple web servers' have been extremely rare and very expensive, requiring costly routing equipment which has previously been used only in mission critical applications of Fortune 500 companies.

However, a very neat but little known Domain Name Server(DNS) feature called 'round robin' allows the selection and provision of a particular IP address from a 'pool' of addresses when a DNS request arrives.

To understand what this has to do with server reliability it's important to remember that the Domain Name Server (DNS) database maps a host name to their IP address. So instead of using a hard to remember series of numbers (IP address) we just type in your web browser www.yourdomain.com, to get to your website.

Now, typically it takes at at least 2 to 3 days to propagate or 'spread the word' of your DNS info throughout the internet. That's why when you register or transfer a domain name it isn't immediately available to the person browsing the web.

This delay has stymied the security benefits of hosting your site on multiple servers, as your site would be down for a couple of days if something went awry with one server. You would have to change your DNS to reflect your second server and wait days before the change was picked up in routers on the internet.

However, the round robin DNS strategy solves this predicament, by mapping your domain name to more than one IP address.

Select hosting companies now employ the DNS round robin technique in conjunction with'failover monitoring'.

The DNS round robin failover monitoring process starts by a web hosting company setting up your site on two or more independent web servers (preferably with different IP blocks assigned to them). Your domain name will therefore have 2 or more IP Addresses assigned to it.

Then the failover monitor watches your web server(s) by dispatching data to a URL you specify and looking for particular text in the results. When the system detects that one of your IP addresses is returning an error, and the others aren't, it pulls that IP address out of the list. The DNS then points your domain name to the working IP address/s

If any of your IP's come back online they are restored to the IP pool. This effectively and safely keeps your site online ? even if one of your web servers is down.

The average failure detection and recovery time with a system like this can be as low as 15 minutes. This time varies depending on the speed of your site and the nature of the failure and also how long other ISP's cache (save) your DNS information.

The time taken for other ISP's caching your information can be manipulated in the failover monitor by lowering the "time to live" (TTL) cache settings. These are the settings that other ISP's will use to determine how long to cache your DNS information.

Of course you must bear in mind the matter of how frequently data is synchronized between your website's servers. This will be the hosting company's responsibility, and this may become complicated where databases and user sessions are involved.

The very expensive hardware based failover monitoring systems that point a virtual IP address to other ISP's, while behind the scenes juggling a number of unique IP addresses on different servers, is of course the most 'elegant' solution to multi server hosting.

That way, the whole issue of ISP's caching your information does not come into play.

Therefore, for site's that need to have true 99.99995% uptime, without huge outlays of money, the technology is readily available and certain proprietory failure monitoring systems are now relatively cheap to apply.

About The Author

Godfrey Heron is the Website Manager of the Irieisle Multiple Domain Hosting Services company.Signup for your free trial, and host multiple web sites on one account: http://www.irieisle-online.com

recurring maid service Buffalo Grove ..

In The News:

The iconic Mary Kay pink Cadillac goes electric with the Cadillac Optiq, available only to the company's top 1% of sales force performers.

Cybercriminals abuse trusted Intel driver to gain kernel access and shut down Windows Defender, enabling undetected malware deployment since July 2025.

Using email aliases for online shopping and subscriptions can protect your privacy by preventing companies from linking your activity across websites.

New research shows AI overlap does not equal job replacement, with knowledge-based roles seeing most integration while physical jobs remain least affected.

Scammers target seniors who avoid social media by exploiting public records like obituaries and real estate filings to steal personal information and money

Recovery team in Italy use AI-enabled drones to detect missing hiker's red helmet, leading to successful recovery after months of ground searches

Google Salesforce system breach exposes business data while scammers use incident to target users with fake security calls and phishing attempts.

Google announces Pixel 10 lineup with Tensor G5 chip and Gemini Nano AI, introducing Magic Cue, Pro Res Zoom up to 100x and satellite emergency support features.

C San Diego study reveals 86% of school safety companies monitor students 24/7 on personal devices, raising privacy concerns.

Users can now add their favorite outlets' coverage to the Top Stories section of Google search results by utilizing the 'preferred sources' feature. With just a few clicks, you can add Fox News.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight reflection or standard cometary outgassing.

Receiving order confirmations for purchases you never made could mean your email address is being exploited in fraud operations targeting multiple retailers.

First wireless brain implant works with Apple's official protocol, enabling hands-free control of iPhones, iPads and Vision Pro through thought alone.

Data brokers sell personal details that scammers use to target retirement funds through fake financial advisor calls and convincing phishing attempts

Ten innovative tech solutions from gait sensors to smart pill dispensers help adults 65+ track fall risks and prevent injuries before they happen.

Meta AI internal documents revealed chatbots were allowed to flirt with children and engage in romantic conversations until the company was exposed by Reuters.

ChatGPT will avoid giving direct mental health advice under new OpenAI rules following instances where the AI model provided harmful or misleading responses.

Your phone tracks you in more ways than that little GPS icon suggests. Here’s how to find and clear hidden location logs on iPhone and Android.

Authorities in France and the Netherlands have been notified. Meanwhile, impacted customers are being told to stay alert.

Apple just rolled out a redesigned Blood Oxygen feature to specific models, following a recent victory in a legal dispute.

Kidney dialysis provider DaVita experienced a ransomware breach by the Interlock gang affecting 916,000 people in the second-largest U.S. healthcare attack of 2025.

A Chinese-made Unitree R1 robot walked Manhattan streets and shopped for shoes as part of KraneShares' $28 million AI robotics fund promotion campaign.

The ShinyHunters cybercriminal group breached Google's Salesforce system through vishing attacks, stealing business contact details and customer data.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

How Multiple Server Hosting impacts your websites uptime

Web Hosting