Two ways to slice a server
A full-VM VPS (built on a hypervisor such as VMware ESXi or KVM) is a complete virtual machine. The hypervisor emulates hardware, and your server boots its own Linux or Windows kernel, loads its own modules and manages its own memory. A container VPS (OpenVZ 7, Virtuozzo or LXC) is a set of isolated processes on the host's kernel. It looks like a server when you log in, but the kernel, and many of its limits, belong to the host.
Neither design is wrong. Containers are lighter and let a provider pack more customers onto one machine. That efficiency is exactly why the two feel different in practice.
Side by side
| Factor | Full virtual machine | Container VPS |
|---|---|---|
| Kernel | Your own, any version | Shared with the host |
| Operating systems | Linux, BSD, Windows | Linux only |
| Docker and Kubernetes | Works normally | Often limited or unsupported |
| WireGuard, custom modules | Load what you need | Depends on host configuration |
| Memory | Reserved for your VM | Often burstable and shared |
| Isolation | Hardware-level | Process-level |
| Typical overselling | Harder to do | Easy to do |
Where containers fall short
The shared kernel is the root of most container VPS frustrations. You cannot upgrade it, so a distribution that expects a newer kernel may not run. Kernel modules such as WireGuard, certain iptables or nftables features, and FUSE filesystems need the host to enable them. Docker inside a container usually requires nesting features or special storage drivers, and some providers simply block it.
Memory is the other surprise. Many container plans advertise "burst" RAM that is only available while neighbours are quiet. When the host gets busy, your processes are the ones squeezed. Tools such as free may even report figures that do not reflect what you can really use.
Where full VMs cost more
A virtual machine carries a small overhead for its own kernel and emulated devices, and memory you are allocated is held for you whether or not you use it. Providers therefore charge a little more for the same headline numbers. In return you get a server that behaves like hardware: you can install any distribution, change kernels, enable modules, run Windows Server, and know that 4 GB of RAM means 4 GB.
Performance in practice
With paravirtual drivers (virtio on KVM, VMXNET3 and PVSCSI on VMware), full-VM disk and network performance is close to bare metal for most workloads. Containers have a slight edge on raw efficiency, but on an oversold host that edge disappears under contention. Consistency usually matters more than a few percent of peak throughput, and reserved resources are what deliver consistency.
What VeloxMedia uses
Every VeloxMedia plan, from Micro at $5 a month to Max, is a full virtual machine running on a clustered VMware vSphere platform. That means Docker and Compose work out of the box, WireGuard loads without a ticket, and Windows Server is a one-click image. Memory and vCPU are allocated to your server, storage is replicated SSD, and if a host fails the VM restarts on healthy hardware automatically.
How to tell what you are buying elsewhere
If a provider does not say, a few clues help: plans that mention "burst" or "vSwap" memory, no Windows option, Docker listed as unsupported, or a kernel version you cannot change all point to containers. On a running server, systemd-detect-virt prints vmware or kvm on a hypervisor guest and openvz or lxc inside a container.