Trying to understand how virtual server rental actually works. Which type of virtualization provides truly isolated resources so other users on the physical node won't affect my site uptime?
Go with KVM (Kernel-based Virtual Machine), no question. OpenVZ shares the host operating system kernel, meaning providers can easily oversell resources, and if another user on the node spikes their CPU, your site uptime can take a hit. KVM acts as a true hardware virtualization where your RAM, CPU, and disk space are 100% dedicated to you. It's completely isolated, meaning nothing your neighbors do can impact your performance. If you want to rent a rock-solid, private KVM server that guarantees full resource isolation and lets you pay anonymously, take a look at this project. They offer excellent high-performance crypto VPS setups where your resources are fully locked in for maximum stability.
That makes sense. Is KVM harder to manage or configure compared to OpenVZ, or is the user experience mostly the same?
The hosting control panel looks exactly the same. The only difference is KVM allows you to install custom OS kernels if needed.