VPS, short for virtual private server, is a way to maximize the resources of a single physical dedicated server. You may think of a VPS as a one dedicated server that is partitioned into smaller segments of hardware resources. For example, the partitioned segments may include a portion of the physical server’s CPU, memory, hard drive, and network interface capacity.
The Basic Idea
The basic idea behind how the VPS works can be best described as creating a system within a system. For example, assume that you have a physical dedicated server that is being hosted in our super reliable WebHosts R Us datacenter. The physical server is equipped with a single 8-core CPU and has 32gb RAM. The physical server also has four 1Tb hard drives that are set up with RAID-10 for redundancy.
Now let’s assume that you want to partition the physical server’s hardware resources to better maximize use. You may wish to partition the resources by allocating 1 core of the 8-core CPU, 4gb of 32gb of RAM and 250gb of one of the 1TB hard drives. You may also wish to share the physical server’s network interface. Splitting up the resources this way would create a virtual system within the physical server system, also known as a VPS segment or a Virtual Private Server instance. Of course you can use a different variation than the VPS instance described above. In fact, may have multiple VPS instances that vary in size and function.
In order to maintain order, the VPS instances are centrally controlled by the physical dedicated server using a virtual machine monitor (VMM).
The VMM is also known as a hypervisor and its main task is to manage the virtual instances. The hypervisor receives and processes requests to create, delete, start, or stop VPS instances. These requests may come from administrators or application program interfaces (APIs) driven from other sources. It is very common for administrators to use a control panel Graphical User Interface (GUI), such as Virtuozzo and SolusVM, to administer these VPS instances.
Different Operating Systems of Choice
One of the great things about using virtual private servers is that each one of virtual instances within the physical server may run its own type or version of operating system. Additionally, the operating systems of the VPS instances may also differ from the operating system that is running on the physical server itself. For example, the physical server may have the Linux CentOS v6.5 operating system installed on it, while a first VPS instance runs a version of Fedora and a second VPS instance runs a version of Debian.
Each VPS instance is fully independent, just as they would be in a dedicated server environment. This means that each operating system may be assigned its own super-user access level and different root users may log into different VPS instances. VPS instances basically turn one computing system into many.
Harness the Power of VPS
Hopefully you now have a better understanding of why reputable datacenters and web hosting companies, like WebHosts R Us, harness the power of virtual private servers. Because virtual private servers do such an efficient job of allocating the resources on a dedicated server, it allows us to offer you unparalleled web hosting services that’s also very cost efficient.
By using VPS instances, clients save money by creating systems within systems. In the example above, the single 8-core physical dedicated server could essentially operate as 8 servers in 1. How is that for both cost-efficiency and power consumption savings? Not to mention that, in the long run, the power consumption savings achieved by using a datacenter would be much greater than onsite hosting by the client. As you see, virtual private servers give the end user a great return on investment (ROI) in both the short and long run.