What is a Virtual Private Server (VPS)?
A virtual private server (VPS), also known as a virtual dedicated server (VDS), is a virtual server that operates as a dedicated server but is installed on a computer serving multiple websites. Each VPS has its own operating system (OS) and runs hosting software for a specific user.
VPS hosting relies on virtualization software, called a hypervisor, to abstract resources from a physical server and provide customers with access to virtual machines (VMs). Each VM runs a complete OS and has limited access to the physical server’s compute, memory, and storage resources. Customers can access the VM’s OS but not the physical server.
While multiple tenants can share VMs on the same physical server, strict isolation prevents interactions between VMs owned by different tenants, ensuring logical privacy without physical separation.
The primary advantage of using a VPS is the subscriber’s full access to the VPS’s OS with unrestricted root or administrator permissions. This enables subscribers to configure the VPS according to their unique requirements. They can also host additional services on the server, such as FTP sites, mail servers, or specialized applications and dependency databases for activities like e-commerce and blogging.
Another advantage is the ability to host multiple websites on a single VPS. Organizations can host production and development sites on the same VPS, while web development companies can host websites for multiple customers using a leased VPS.
In summary, a VPS relies on virtualization software to provide access to virtual machines with their own OS. The subscriber enjoys full OS access and can configure the VPS as needed. Additional services and multiple websites can be hosted on a VPS, making it a flexible hosting solution.