Nas

The 3-2-1 backup rule gets repeated so often it’s turned into a slogan: three copies of your data, on two different media types, with one copy off-site. It’s good advice. It’s also advice that was mostly written with a few hundred gigabytes of irreplaceable photos in mind, not the 50, 100, or 200TB array a serious data hoarder ends up running. At that scale, “just keep an off-site copy” stops being a checkbox and starts being a real infrastructure and cost decision. Here’s what each part of 3-2-1 actually means once your data won’t fit on a shelf of external drives anymore. ...

There’s no single right NAS OS, there are three genuinely different philosophies, and the “which one is best” debate mostly happens because people are comparing them against different priorities without saying so. If you know what you’re actually optimizing for, capacity efficiency, mixed-drive flexibility, or full control, the choice mostly makes itself. Here’s what each one actually trades off. TrueNAS: ZFS-first, and it means it TrueNAS (SCALE, the Linux-based version, is the current default recommendation over the older FreeBSD-based CORE for most new builds) is built entirely around ZFS, and that shapes everything about how it works. You get real checksumming, snapshots, and the RAIDZ redundancy levels covered in the ZFS pool layout guide elsewhere on this site, all through a genuinely mature, well-tested web UI with a large ecosystem of documentation and community troubleshooting behind it. ...

10GbE gear has gotten cheap enough on the used market that it shows up in nearly every “should I upgrade my network” thread on r/homelab, usually with someone insisting it changed their life and someone else insisting it did nothing for them. Both are usually telling the truth - it depends entirely on what’s actually slow in your setup right now. Here’s how to figure out which camp you’re in before you buy anything. ...