HOSTKEY Company blog

The same RTX 4090 with a €150 price gap: what are you really paying for? Learn how to tell a whole GPU from a slice of one, when a GPU VPS is enough, and when it is time to move to a dedicated GPU server.

Step-by-step guide to running DeepSeek, Gemma, and Phi on your own server. Ollama, vLLM, Docker, GPU configuration, and code examples.

The debate over how to install software on a server usually ends in a stalemate because everyone has their own habits. We categorized twelve methods, ran five of them on identical servers with a stopwatch, and discovered that more than half of the time difference is not spent installing the application itself, but installing the tool itself.

Your disk reports free space, and the server still refuses to write a file — that is inodes, not gigabytes, and df -h will never show it. The full diagnostic path from df and du to ncdu, find and lsof +L1, plus what is safe to delete and how to keep the disk from filling up again.

OpenClaw is not a model — it is the layer that decides which tool to reach for, with access to your files, shell, browser and APIs. We cover the gateway, memory and tools architecture, what hardware each scenario needs from a 2 vCPU VPS to a GPU box, and the hardening steps to take before it touches production.