Milestone: Which server to order for self-hosted Firecracker sandbox in...

Documentation for Sessions

📝 Milestone: Which server to order for self-hosted Firecracker sandbox in...

Date: 2026-02-27
Time: 21:37:44 UTC
Session: gspace1-150.11
Agent: architecture
Confidence: 96%
Status: ✅ Documented

📋 Decision Context

Question:

Which server to order for self-hosted Firecracker sandbox infrastructure?

Task: Order Hetzner dedicated server for sandbox infrastructure

🎯 Decision Made

Chosen:

Hetzner AX42-U: Ryzen 7 PRO 8700GE (8c/16t), 128GB DDR5 RAM (upgraded from 64GB for €16/mo), 2×512GB NVMe, Ubuntu 24.04 LTS, Falkenstein datacenter. Total: €127.33/mo incl. 19% VAT + €127.33 one-time setup. Password auth initially (no SSH key existed), will switch to key-only on first login.

Options Considered:

  1. Hetzner AX42-U 128GB (chosen)
  2. Hetzner AX42 64GB base (€49)
  3. Hetzner EX44 64GB (€39)
  4. Hetzner AX102 128GB (€104 + €269 setup)
  5. OVH Advance-2 ($123)

💭 Reasoning

128GB RAM upgrade for €16/mo is the best value decision: doubles VM capacity (30→60 concurrent users) for 33% more cost. Eliminates need to migrate to AX102 unless exceeding 60 concurrent users. AX42 over EX44 because AMD Ryzen 7 PRO supports ECC-capable memory architecture. Over AX102 because same 128GB RAM at 63% the price (€127 vs €104 base + €269 setup). Default 2×512GB NVMe sufficient for ~350+ user snapshots. Ubuntu 24.04 LTS chosen as host OS — our provision-server.sh is Ubuntu-based. Server showed 'available in a few minutes' despite being customized config.

📁 Files Involved

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