With the increasing influence of the Internet, every day more and more users go online shopping and order services of any kind over the entire Internet. For these companies to function, they need powerful servers with predictable performance. For many years, we used to see that the solution was a metal server, but these things are changing.
Before, if you had to dedicate resources to your site, say a large e-commerce site, you would rent a metal server or buy the server yourself and assemble it in a data center. This, as you might imagine, is not scalable, difficult to maintain and manage and expensive. VDS servers are a solution to these problems.
Why Virtual Dedicated Server (VDS)?
Thus, hypervisor technologies made it possible to run multiple virtual machines on the same machine. Completely separate virtual servers, each with its own resources such as CPU, RAM, disk storage, etc. This is how Virtual Private Server (VPS) came into being. The difference between the VPS and VDS is that one or more resources are shared between virtual machines. When using the VDS service, you receive a virtual server with the guaranteed resources. You have 100% of the CPU which you can cycle 100% on the clock. RAM and other resources are reserved for you, too. It’s like a dedicated server, but it’s virtual and better. This is how the acronym VDS (Virtual Dedicated Server) appeared.
And it’s even better because with these new generation servers, you have the flexibility to upgrade your resources anytime and instantly: increase or decrease the number of AMD EPYC CPU cores, increase or decrease RAM size, increase or decrease native disk storage space. This can be done the hard way when we are talking about a physical server. First you have to buy the parts, and then install them and these results in more downtime compared to VDS. Downgrading the credit rating is even more difficult.
When is a Virtual Dedicated Server useful and appropriate?
A dedicated virtual server is ideal for sites that go beyond the capabilities of traditional hosting and high-load network services as well as for software design, development and testing. Closed corporate projects with increasing requirements for security and data confidentiality also mostly rely on dedicated virtual servers, especially for small businesses for which there is no access to purchasing or renting a physical server.
For example, you can use a less expensive option (such as shared hosting). However, keep in mind that in this case, you will only be able to use the software installed by your service provider. And your site’s performance will depend entirely on the load from your shared hosting neighbors. It may become very noisy.
How reliable is a Virtual Dedicated Server?
As we said earlier, the VDS server has allocated dedicated resources. This makes it powerful because performance is predictable and guaranteed. Your plan gives you 4 CPU cores, and you will receive 4 physical CPU cores completely for you. If your application uses CPU intensively, this service gives you credibility that it will work 100% of the time.
A separate server gives you complete control over the system, from managing user accounts and installing software to configuring network interfaces and firewall rules. In order to perform these actions, you must possess a certain level of qualification as a System Administrator. It is valid for both virtual servers and devices.
How diverse are VDS offerings?
Nowadays, you can get the services of various types and models (SaaS, PaaS, IaaS, etc.). A dedicated virtual server is part of the IaaS (Infrastructure as a Service) model, which is the most diverse cloud service consumption model. Based on a virtual machine, you can create any information system you need, install any operating system and software, configure any network. You can upgrade it/downgrade at any time with just a few clicks.
Conclusions on Virtual Dedicated Servers
Now that you’ve read about VDS and its features, you can decide if it’s your business or you need one personally. To summarize, as you already understood, this service is like a virtual private server but with the guaranteed resources. Because of the benefits of KVM virtualization, it acts as a true dedicated server.
One of the most important differences between the two is that VDS, unlike a bare metal server, allows computing power to be rapidly upgraded or downgraded. A dedicated virtual server makes it easier and more flexible to host and manage your application as long as you have the necessary system administration skills.