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hardware.md

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+# Homelab Hardware Inventory
+
+## Compute Nodes
+
+| Node | CPU Arch | RAM | Role | Cost |
+|------|----------|-----|------|------|
+| Beelink SER9 MAX | x86_64 | 64GB | k3s worker, ROCm GPU, Longhorn storage | ~£869 |
+| Beelink SER9 Pro | x86_64 | 32GB | Bootstrap: Puppet, DNS, UniFi, Vault, Naemon | ~£300 |
+| Minisforum MS-R1 | ARM (aarch64) | 64GB | k3s node | ~£500-640 |
+| Nvidia DGX Spark | ARM (Grace) | 128GB | CUDA/AI inference | ~£3,700 |
+| Mac Studio M1 Max | ARM (aarch64) | 32GB | k3s server #1 (etcd) | ~£775 |
+
+## Networking
+
+| Device | Specs | Cost |
+|--------|-------|------|
+| USW-Flex-XG x2 | 8x 10GbE ports total (4 per switch) | £458 |
+
+## Summary
+
+- **Total RAM:** 320GB
+- **Architectures:** x86_64, aarch64 (Apple Silicon + ARM + Grace)
+- **GPU compute:** ROCm (SER9 MAX), CUDA (DGX Spark)
+- **Estimated total:** ~£6,600-6,740
+
+## Node Roles
+
+### Bootstrap Node (Beelink SER9 Pro) — Outside k3s
+- Puppet (bare metal config management)
+- DNS (CoreDNS or PowerDNS)
+- UniFi controller
+- Vault (secrets management)
+- Naemon (bare metal, network, black-box endpoint monitoring)
+
+### k3s Cluster
+- **Server (control plane + etcd):** Mac Studio M1 Max
+- **Workers:** Beelink SER9 MAX, Minisforum MS-R1, DGX Spark