Know-how

Server failure: risks, consequences, countermeasures

Server failures can be devastating for businesses, especially if central business areas are controlled by IT systems since the longer the server is down, the costlier is it for the company. This can result in loss of sales and in the worst case, the loss of business or customer data. Here we demonstrate the internal and external sources of danger that can lead to server failure, explain the consequences for the business, and provide you with some possible countermeasures. [...]  

DNS server unavailable? Here’s what to do

‘DNS server not responding’ is a typical error response on Windows. Its presence indicates that some sort of problem is occurring with your internet connection. This phenomenon can be the result of many different causes. In addition to network problems, routers, Windows Firewall, and the web browser are also taken into account when troubleshooting. [...]  

Alternatives to ownCloud: an overview of the best hosts

When it comes to cloud storage services with synchronisation functions, many users see ownCloud as the most reliable option. That being said, it is also worth broadening your perspective, as the best alternatives to ownCloud also offer some other interesting features, which cloud storage service enthusiasts should not be missing out on. This article is here to help you find the alternative to ownCloud that is right for you. [...]  

What is a web server? And which web server software is there?

The equation is simple - without it, there’s simply no web content: when a web server is out of order, then it’s no longer possible to call up any websites that are connected to it. Web servers are what allow online presences to reach the internet in the first place. But just how do these systems work? Which functions do the programmes responsible for this task offer? And what’s an example of a good web server software? [...]  

What is a floating IP?

IP addresses are essential for modern digital communication. They are the 'connection numbers' of all devices in the network and this is why they are one of key foundation elements of the internet as well as other networks. Communication is based on a common 'language': the internet protocol. But what exactly is a floating IP and what is it used for? What is the difference between a floating IP of static and dynamic IPs? [...]  

What is a VPS (virtual private server)?

A virtual private server (VPS) is a compromise between shared hosting and a dedicated server. The VPS product allows web hosts to combine the strengths of both hosting models in one, cost-efficient IaaS solution. We’ll take a closer look at this hosting solution, demonstrating how a virtual private server works, exploring the advantages and disadvantages of it, and deciding who the model is best suited for. [...]  

Deduplication vs. compression: two concepts in data reduction

With the mass of data constantly increasing, ever more efficient storage techniques are required to reduce storage requirements with as few losses as possible. For this purpose, there are two compression techniques that are currently in use. While data compression identifies and eliminates redundant information within a file, deduplication is a cross-file method that is particularly suited to backup processes where files are only partially replaced. [...]  

IPv6: All about the new internet standard

IPv6 is the newest version of the internet protocols, and should overcome the central issues of its predecessors. Included in these issues is the impending shortage of IPv4 addresses as well as the violation of the end-to-end principle by the strict separation of public and private IPs. This article gives an overview of the functions of IPv6 as well as the structure and distribution of address space. [...]  

Apache Hadoop: distributed storage architecture for data quantities

Are you looking to execute complicated computing processes with large amounts of data? This is exactly what the Big Data framework, Hadoop, focuses on. The open source Apache software offers a Java based frame with which various Big Data applications on computer clusters can be parallelized. Hadoop’s modular expandability, which offers users an enormous range of functions, is a particularly advantageous feature of this system. [...]  

What is gzip? – the compression tool in focus

If you want to optimise your website in terms of performance and usability, you need to know a thing or two about compression. Whether it’s the HTML pages, the embedded media content, or CSS and JavaScript files: compressing this data doesn’t just save valuable web space, but also improves your website’s average loading time. A useful tool is gzip, a compression process, which all current webservers can take advantage of. [...]