What is a vServer (KVM) and what is it good for?

Short definition

A vServer (VPS) is a virtual server instance with its own OS and root access.

Resources come from a host system but are cleanly separated by the hypervisor.

What is a vServer good for?

vServers are great when you want flexibility and full control without owning hardware.

• Websites, APIs, and smaller SaaS projects.
• Development and test environments.
• Proxy, VPN, monitoring, or backup services.
• Smaller game servers or community instances.

When a vServer is less ideal

For very high sustained load, extreme I/O, or strict latency requirements, dedicated can be a better fit.

• Large databases with constant high I/O.
• Very large game servers with high tickrate.
• Workloads with strict guaranteed performance.

What does KVM mean?

KVM is a kernel-level hypervisor that enables hardware-near virtualization.

Compared to containers, KVM provides clear isolation and a separate kernel environment per VM.

Practical checklist

These points help when choosing a vServer:

• vCPU: does single-core performance fit your app?
• RAM: enough headroom for cache and peaks?
• Storage: NVMe for many small I/O operations.
• Network: sufficient bandwidth and good latency.