The answer to this question largely depends on two factors. Are you new to server technology and not very interested? In this case, Windows is the easiest option to get where you want to go. Do you already have experience with Linux or would you like to familiarize yourself with this operating system? If so, Linux gives you more freedoms to configure your server, and you will be using an operating system that is less vulnerable to attacks from the Internet. Linux is also open source and therefore free.
Ample RAM (5GB or more), e-commerce options for selling products, 24/7 customer service, and unlimited monthly data transfers are highly sought-after features, too. Many web hosts cap their dedicated monthly data transfer offerings at 16GB, which is probably fine for most users. Some web hosts offer unlimited monthly data transfers, but they are few and far between, and you need to read the terms of service very carefully to understand just what "unlimited" means to the host in question. In addition, companies that offer dedicated web hosting typically offer daily backups, security options, and malware detection and removal—all very important factors in your website's day-to-day operation.
A dedicated server, or computing server, is a server where all the physical resources of the machine are available. Unlike a virtual server, which uses a portion of the resources to run its virtualisation technology, a dedicated server allows you to benefit from all of the machine’s available RAM, storage, and computing power. With cloud computing, we can also define this type of solution as "bare metal", highlighting the physical availability of the machine’s resources, in contrast to standard solutions based on virtual instances.
What are your plans for the server? Do you want to set up a blog to post about your life or build an info page for a charitable cause or NGO? It is unlikely that these ventures will place excessive demands on the CPU (processor) and RAM (working memory), and thus hard drive storage should certainly be enough. The same applies to smaller online games and to installing a TS3 (Teamspeak 3) server as a communication platform. A vServer will be perfectly sufficient for these projects. What’s more, the IONOS VPS grants you root access, giving you a lot of freedom.
Building your website on a shared server means that your pages may be affected by a neighboring site that devours too many server resources. For example, if that site receives a huge spike in traffic, your pages might load slowly—or not at all. Investing in a dedicated server greatly reduces this potential problem, plus it gives system administrators greater control over the apps and scripts that they can install on the server, too. Shared hosting is far more limited when it comes to what you're allowed to do, because everything you do could potentially affect the other sites with which you share the server. When you've got the server all to yourself, your scripts and apps won't impinge on anyone else's bandwidth or RAM.
All of these features may look impressive, but if you don't know what Dedicated Hosting is in the first place, these features probably don't matter much to you at all. When you purchase a Dedicated Server from A2 Hosting, you are getting all of the resources listed with the server plan of your choice. You do not share these resources with any other user or customer. The bandwidth, RAM and data transfer are for your use exclusively. With all of these resources at your disposal, you can expect your hosting service to be both highly reliable with top performance.