RAM is one of the easiest specs to either badly underbuy or badly overbuy in a homelab, because the honest answer to “how much do I need” is “it depends on what you’re actually running,” and most buying guides dodge that and just tell you to get 32GB or 64GB and move on. That’s not wrong exactly, but it skips the reasoning that lets you size correctly for your own setup instead of someone else’s. Here’s how to actually work it out, plus the ECC question that comes up right behind it. ...

Proxmox makes joining a second node to a cluster look almost too easy, one command on the joining node and you’re done, centralized management across both boxes in the web UI. What that quick setup doesn’t make obvious is how much more you need to build on top of it before a cluster gives you the thing most people actually want from one: automatic failover when a node dies. This is the gap that catches people, they cluster two or three nodes, assume they now have redundancy, and find out during an actual outage that a VM doesn’t restart anywhere because nothing was wired up to make that happen. Here’s what clustering actually gets you, what it costs, and an honest read on whether it’s worth doing in a home setup versus running solid standalone nodes. ...

Browser extensions block ads on the device they’re installed on. A phone that isn’t running one, a smart TV, a game console, a guest’s laptop on your Wi-Fi, none of that gets covered. Network-level DNS blocking fixes that by sitting between every device on your network and the internet, and refusing to resolve requests to known ad and tracker domains before they ever load. It’s one of the easiest wins in self-hosting: low resource cost, immediate and visible results, and it protects every device on the network without touching a single one of them individually. Pi-hole and AdGuard Home are the two dominant tools for doing this yourself, and picking between them comes down to a handful of real differences, not just branding. ...

Every data hoarder eventually runs into the same uncomfortable fact: a hard drive can report a read as fully successful while quietly handing back the wrong bits. No error, no SMART warning, no crash. The file opens fine. It’s just wrong. That’s bit rot, and RAID redundancy alone does nothing to catch it, because RAID is built to survive a drive failing outright, not a drive lying to you about data it’s still perfectly willing to serve. ...

“Do I need a GPU for this” comes up constantly in homelab planning, usually attached to one of two very different goals: hardware-accelerated transcoding for Plex or Jellyfin, or running local AI workloads like Ollama or Stable Diffusion. Those two goals point at completely different hardware, and buying for one when you actually need the other is one of the more common expensive mistakes in this hobby. Here’s how to figure out which category you’re actually in before you spend anything. ...

Proxmox sets up a single bridge during install, vmbr0, hands every VM and container a virtual NIC on it, and most homelabs never touch networking again after that. That’s fine right up until you want to keep your NAS traffic off the same broadcast domain as a VM you don’t fully trust, or you add a second NIC and aren’t sure whether to bond it or split it out, or you’re staring at a VLAN dropdown in the VM hardware tab with no idea what happens if you fill it in wrong. None of this is complicated once you see the shape of it, but Proxmox’s networking config is also one of the few places where a bad change locks you out of the box that’s hosting the config, so it’s worth understanding before you’re mid-edit over SSH. ...

A Proxmox Backup Server job backs up entire VMs and containers, which covers you if a whole box dies. It does not, by itself, give you a clean, restorable copy of the actual data living inside your self-hosted apps, the Vaultwarden vault, the Paperless-ngx document store, the dozen docker-compose.yaml files and their bind-mounted config directories that took real time to get right. If your backup strategy stops at the hypervisor layer, you’re covered against hardware death but not against the more common failure: a bad update, a fat-fingered docker compose down -v, or a config file you meant to edit and instead overwrote. This is where an app-level backup tool earns its place alongside whatever you’re already doing at the VM/container level. ...

Proxmox hands you two completely different ways to run a workload, LXC containers and full VMs, and the “New CT” and “Create VM” buttons sit right next to each other in the UI like the choice barely matters. It matters. Pick the wrong one for a given workload and you’ll either waste resources you didn’t need to waste, or hit a wall six months in when something a container fundamentally can’t do turns out to be exactly what you needed. Here’s how to actually decide, workload by workload, instead of defaulting to whichever one you set up first. ...

Ask “what should I run Proxmox on” in any homelab community and you’ll get two camps talking past each other, one pushing a mini PC (an Intel NUC-style box, a Beelink, a Minisforum), the other pushing a custom build in a real case with expansion slots. Both are right, for different homelabs. The question isn’t which is objectively better, it’s which set of tradeoffs actually matches what you’re going to do with the box. ...

Run five self-hosted apps and you’ve got five separate logins, five separate password resets, and five separate places an old account can quietly stay active after you meant to lock someone out. Once you cross that threshold, a single sign-on layer stops being a nice-to-have and starts being the thing that keeps your homelab’s security model from turning into a pile of unrelated logins nobody’s actually tracking. Here’s what an SSO layer buys you, and how the two most common self-hosted options actually differ. ...