At Tilaa, our entire cloud platform is built on KVM (Kernel-based Virtual Machine). Unlike container-based virtualization (like OpenVZ or LXC), KVM provides true hardware virtualization.
This means your VPS behaves exactly like a physical server, with its own isolated kernel, memory management, and hardware emulation.
Key Advantages of KVM
1. True Isolation & Kernel Independence
With KVM, you are not stuck with the kernel version of the host node. You can run any x86 operating system (Linux, Windows, FreeBSD, OpenBSD) and install custom kernel modules.
- This allows you to run software like Docker, WireGuard, or specialized VPN software without restrictions.
- Resources (RAM/CPU) are strictly isolated and guaranteed, preventing "noisy neighbors" from stealing your performance.
2. Security (SELinux & sVirt)
Every Virtual Machine runs as a separate process on the host node. We utilize sVirt and SELinux (Security-Enhanced Linux) to wrap each VM in a mandatory access control layer.
- Even if a hacker were to break out of a VM (hypervisor escape), SELinux prevents them from accessing other processes or files on the host system.
3. Live Migration & High Availability
KVM's robust architecture allows us to perform Live Migrations. We can move your running VPS from one physical host to another without shutting it down.
- This enables us to perform hardware maintenance with zero downtime for you.
- It is also the foundation of our High Availability (HA) guarantee: if a host fails, your VM is instantly restarted on another node.
4. Performance (VirtIO)
To minimize the overhead of virtualization, we use VirtIO drivers. These allow the guest OS (your VPS) to talk directly to the hypervisor for network and disk operations, resulting in near-native performance.