How virtualization works in VPS

To answer the question, how virtualization works in VPS, first we need to have an overview of what virtualization and VPS is. We go through the advantages and possible disadvantages of both virtualization and VPS. We provide a detailed and honest outline of this important service.

The data we produce is constantly growing. There has been a huge demand for the last two decades for potent, fast and cheaper solution for data storage and processing. Formerly, companies had to maintain or rent multiple physical servers to accomplish this task. Of course, this entailed increased expenses in the IT department of a company and more burden on manpower. A change was inevitable.

That is where virtualization technology proved to be essential and inescapable. It facilitated the operation of many businesses and is still widely used. VPS, short for virtual private server, is practically a virtual machine created on a physical server. Thanks to virtualization we can create many virtual private servers with their own distributed resources. Thereby we are capable to use a physical server’s utmost power.

What is virtualization?

Virtualization technology started in the 1960s and initially was used to divide the system resources of a computer between various applications. Due to data storage and processing demands in many business sectors, virtualization technology skyrocketed in 2000s and is still widely used. With virtualization we can basically create virtual instances over a computer hardware. For instance, we are able to run multiple virtual machines (VM) with their own operating systems on one computer or server. This means that each VM behaves as a separate computer. Besides this feature, virtualization helps to use physical hardware resources of a computer or server more effectively. 

VPS is a type of virtual machine as well. It has almost all the features of a physical server. There are a given amount of server resources (CPU, memory, storage disk, bandwidth, etc.) attributed to each VPS and can be used as full value servers.

What are the benefits of virtualization?

VPS services use many beneficial aspects of virtualization. The way virtualization works in VPS contributes to the improvement of productivity and business development. Furthermore, it helps cutting back costs and saving precious work time and management.

Management of applications is much easier

Managing more virtual machines means managing various operating systems on the same computer. Nowadays the majority of people and businesses use different applications. These apps have their own software (for example operating system) requirements. Thanks to virtualization you will be able to run different applications on one computer or server at the same time. No matter if you are a desktop user or a developer working on a desktop computer. You can profit from using virtualization. System administrators working with several servers can use virtualization to save time and workload.

Low-cost solution

Before virtualization each application needed its own computer or dedicated server to complete its task. Unfortunately, this was a huge waste of money and valuable resources. A lot of applications use only a certain percentage of total server resources. Not to mention, idle server times when the application is not running therefore the server is not performing. Virtualization technology is cost-effective because it enables you to use far fewer computers or servers by harnessing the most of a server’s capacity. Besides not investing in a lot of servers you are not responsible of buying and keeping spare hardware parts. Furthermore you will need fewer system admins to operate and maintain the servers. 

Efficient use of server resources

With cost-effectiveness we already touched upon the topic of more efficient usage of hardware resources. With virtualization technology you are able to divide the resources of one server among more virtual machines. This way you are able running various operating systems on one server. Thus you can use super efficiently all the resources your server provides. This is a highly powerful tool in the computing world.

Fast provisioning and automation

You have to install and configure hardware for each application that can be a time-consuming and sometimes gruelling process. Now multiply this when you work with several physical servers or computers. Virtualization enables automation of the deployment of many applications. Due to virtualization VPS provisioning for example can be lightning fast. Besides, our VPS plans come with ready-to-use Linux distributions so you can have a running VPS within a few minutes.

Data security

Having several virtual machines or instances on a server imply more secure environment. Applications that run inside of a virtual machine are safe from the processes that happen in other virtual machines. Data stored on a VM is likewise safe from the users of other VMs. Virtualization is super for isolation and security.

Environment and small business friendly

The more servers and hardware you use, the more you have to get rid of as time passes. Decreasing the number of physical servers reduces the carbon footprint of your business. This automatically entails a reduction in power use as well. Nowadays, responsible companies and individuals care for the environment and try to use as many green solutions in their private and professional lives as they can. Moving to virtualization takes you and your business one step closer to achieve this goal.

Additionally, the money you save using virtualization can be invested in other areas of your business development. Let’s be honest, if you have a start-up company or small business extra money to invest into or improve your biz is always gold.

What is VPS?

Before we elaborate on how virtualization works in VPS we have to clarify what VPS means. VPS or a virtual private server is a virtual machine set up on a physical sever. Practically VPS mimics a dedicated server’s environment on a single server. So a VPS provider is able to create multiple VPSs on one server with a hypervisor.

All these VPSs are separated from each other so VPS is a pretty secure service. Moreover, a VPS has guaranteed resources and you don’t have to share them with other users like in shared hosting. Besides that you can scale your VPS easily and fast whenever you need more resources. The best part is that you pay mostly for what you need.

We recommend choosing VPS if your business has outgrown shared hosting solutions. It is ideal for SaaS providers and e-commerce websites. Developers who have to test applications in various operating systems also can profit from it. Companies and institutions may use VPS as a backup server. Depending on what do you need VPS for you can choose from multiple VPS packages in the market. The majority of VPS plans provide only 1-2 CPU cores at a very low-cost combined with a decent amount of memory and storage disk. We, however, offer 3 VPS plans, one with extra number of 8 CPU cores for a smoother performance. If you look for this extra power of resource maxer.ie can help you.

How virtualization works in VPS

Technically a VPS is a virtual machine. These virtual machines are built on a physical server with the help of a hypervisor. A hypervisor is a software that creates a layer that abstracts physical resources of a server from the VM that is created. The hypervisor separates these virtual private servers from each other creating a safe environment for data storage. In a gist, this is how virtualization works in VPS.

Virtual private servers have almost all the features of a dedicated server except for its price. VPS is far less costly than a dedicated server.

Above all this, virtualization brings out the most of server capacity. As a result of this, you and your business don’t have to invest into plenty of physical severs. In addition you can also cut back sys admin costs since you will need less of them to operate VPSs. Virtualization works a magic in VPS.

The most popular virtualization platforms for VPS

XenServer

Xen is a type of virtual machine platform that allows multiple operating systems to run on the same hardware simultaneously. Ideal for application, server and desktop virualization infrastructures. Originally, a University of Cambridge Computer Laboratory development now developed by Linux Foundation.

Pros

  • It is one of the most secure solutions.
  • Easy installation.
  • Live patching, live migration.
  • You are able to move a running virtual machine.
  • Xen allows end users to start, stop, clone and remotely control their virtual machines.
  • You can create easily clones and machine templates then move them within the pool of hosts.
  • You are able to move a VM from one physical server to another easily.

Cons

  • It requires more frequent reboots than other competitors because the DOM kernel gets “hung up”.
  • At times additional storage set up to the host seems a far more complex task to carry out than in competitors.
  • Difficult to upgrade.
  • The order of virtual server startup assignment is not very easy.
  • Difficult disaster recovery solution.
  • Once in a while, when you delete a virtual machine it can leave orphaned vdisks behind.

Microsoft Hyper-V

Hyper-V is a hypervisor created by Microsoft. It enable users to create virtual computer environments on a physical server. Accordingly, Hyper-V allows to run and manage various operating systems on one server as well.

Pros

  • You can create so called checkpoints, a stored version of your VM and go back to it if a test goes wrong.
  • You are capable of creating easily new virtual machines.
  • Live migration is simple.
  • You can backup the vhdx file.
  • If you face any issues you may solve them by searching the web.
  • You are able to control the resources.

Cons

  • Unfortunately load balancing is not available.
  • It is more costly to host more than two instances on one physical server due to new MS licensing strategy.
  • Lack of web-based management.
  • It has poor support for Linux OS.
  • Windows updates might damage your Hyper-V server.
  • Setup is a bit tricky, you need to do some research and look up.

VMware

VMware is a California based company that offers virtualization softwares, among other IT services. Its desktop software runs on Linux, macOS and Windows as well. Its enterprise hypervisor, VMware ESXi runs directly on server hardware.

Pros

  • You are able to migrate easily virtual machines to new storage.
  • Due to its flexibility you are capable to run services across diverse hardware types.
  • Installation is easy.
  • You can manage resources quickly.
  • Dramatically decreases server footprint.
  • Solid server uptime.

Cons

  • It is relatively expansive compared to other virtualization platforms.
  • Upgrade process is difficult.
  • At times it is complicated to integrate with other products.
  • Many features cost extra fees.

KVM

KVM is a kernel-based open source virtualization platform. It allows you to turn Linux into a hypervisor. Thereby a host machine is able to run numerous, isolated virtual machines.

Pros

  • It is an open source technology.
  • The initial setup is simple.
  • Scaling is easy.
  • Fairly secure solution.
  • High-performance IO.
  • Easy backup.
  • It is lower cost compared to other virtualization technologies.

Cons

  • You need more knowledge to manage it.
  • Tech support for KVM needs improvement.
  • You have to use other applications to set up KVM VMs.
  • Networking is complex.