Budget Homelab in Japan 2026: Best Mini PCs, Setup Guide and 20+ Self-Hosted Services

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A comprehensive guide published on DEV Community helps Japan-based users build an affordable home server using budget second-hand mini PCs such as the ThinkCentre M720q, OptiPlex Micro, and Raspberry Pi. The guide covers minimum hardware requirements — including an 8th-gen Intel CPU, 16 GB RAM, and an SSD — and recommends keeping power consumption under 20 watts for cost efficiency. It walks readers through two installation paths: Ubuntu Server 24.04 LTS for a straightforward setup, and Proxmox VE for those wanting virtualisation. Over 20 self-hosted services are listed alongside Docker-based deployment instructions and a step-by-step Cloudflare Tunnel configuration to expose services without opening router ports. Reference prices are provided for Japanese second-hand marketplaces such as Mercari, Yahoo Auctions, and Hard Off, with a caution that costs vary by condition and specs.

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