(Guessing the entire argument below is based on lexical ambiguity in English)

I think you can also register 10 years in advance, or maybe more depending on the registrar, which would cover all other potential snafus like expired card info.

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Sure thing! Yeah the type I cert is an easy choice, same as 609 MVAC. If you’re considering the trade, you might choose universal (I, II, III) to save time. Exam is longer, closed book, and proctored, but not hard.

Among skilled trades, HVAC is notoriously demanding physically (especially residential, where you’ll spend a lot of time in attics and crawl spaces in hot weather) but consensus on hvac forums is that pay’s good and you’ll never be out of a job as long as you take care of your body.

You’ll need to pickup 608 type I certification to legally buy most refrigerants. It’s inexpensive, the exam is open book, and takes an afternoon to complete.

The “textbook” used is actually a useful reference if you’re just starting out. The material familiarizes you with common terminology, regulations technicians must follow, and the procedural basics for typical jobs, but the emphasis overall is how to handle refrigerants safely and avoid venting them into the atmosphere.

Ah! Been there. Allocating lanes on small systems always seems to have more trial and error than I expect.

And here’s that x4 SFP+ card: https://www.trendnet.com/products/10g-sfp-pcie-adapter/10-gigabit-pcie-sfp-network-adapter-TEG-10GECSFP-v2

can’t find any SFP+ card that is x4

Pretty sure mine is x4. I’ll check.

Edit: confirmed.

Maybe yeah. Also got the sense from the strong opinions that this is a preexisting debate, presumably in the context of continuous workloads or cached arrays with minimal spindown intervals. In that context it’s true that rotational disks still often win in energy efficiency and robustness (assuming we’re comparing them to consumer SSDs and not the latest enterprise u.2 stuff that’s rated for continuous work).

Not sure what everyone is arguing about here. Clearly SSD is better for intermittent r/w, whereas HDD can be more efficient at continuous r/w (especially in terms of watts/TB)

Just looking at specs should be enough to see that. SSDs can idle in ready state at close to 0 draw (~0.05w) whereas HDD requires continued rotation to remain ready. So consider an extreme case of writing for 1 minute then maintaining ready state for the rest of the day. For that the SSD will be far more efficient, obviously.

I don’t know, but I’d guess the buffered chipset controller has more stability during certain power state transitions.

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Dammit, I came here hoping to see at least one “I have a very special set of skills.” Oh well.

Yeah I’d cut bait, rebuild from latest tapes. But also…

I’d put the corrupted backups in an eye-catching container, like a Lisa Frank backpack or Barbie lunchbox, to put on the wall in my office as a cautionary tale.

Nice, sounds like you narrowed it down.

You can leave turbo boost on and make more subtle adjustments using command line utilities like cpufreq or with GUI-based unraid plugins like this one.

Before spending time fiddling with settings though, you might try using /sys/devices/system/cpu/cpu*/cpufreq/energy_performance_preference to set one of the built-in profiles like balance_power. If you do need to make manual adjustments, I would try lowering max clock speed first.

Not sure but I’d guess VRM. Would try to localize sound with a mic to be sure. If no RMA or pending FW update, would try disabling problematic c-states and/or dampening with thermal pads.

I liked the mitosis analogy. May I borrow it?