

More or less exactly this. Most of my servers are company decommission (some companies have a strict upgrade cycle, and I even have like 3 more “spares” sitting around). I’ve found some government liquidation here and there as well which has been great for resale to recoup some of what I spend. I have something like 4TB of Ram sitting in a box somewhere that I should sell somewhere…
Some stuff was “decent” ebay buys. A few items I just had to pony up for. Battery backups was mostly paid at full msrp, but has been worth it. HDDs are mostly “refurb” and built up over time as well, which is why raidz2 and several spares in the zfs pool.
But yeah, about 10 years of building it up. I use it as my playground for professional development, and it’s helped prove a lot of what I say on my resume.
When you have a functional setup like this, and can show that to potential employer. It’s been the best sole investment I’ve ever made. It’s netted me more money in contracts by many many times what I put into it.
Edit: and saved me from countless “cloud” privacy violations, data breaches, etc…
So about that… I actually got solar installed on my house and when the “electrician” (subbed out contractor with dubious credentials but was operating under a legit company) ran dedicated breakers for the servers… the junction box caught fire.
That was a fun 2am to wake up at.
But it’s pretty safe now. Have had several master electricians come in and evaluate it all at this point and all of them are happy with it now.