Fujitsu D3643-H MB B360 (Intel,1151,DDR4,Micro-ATX), S26361-F5010-V160

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So I've been looking into second hand. The nice supermicroboards can't be found second hand for a reasonable price at the moment. And as I've come to understand over here, the consumer boards I'd better not use as well. This kinda answers the question already, but I'm gonna ask it anyway. With the very limited budget I can get (both secondhand): Don't use RAID: https://www.truenas.com/community/r...bas-and-why-cant-i-use-a-raid-controller.139/

A: I expect the max 22 harddrives to at most consume 480W at spinup (thats a worst case), which is a little above the recommended load but not too bad. PSU is sized on average expected peak load, not absolute maximum expected load. Hardware recommendations: https://www.truenas.com/community/resources/hardware-recommendations-guide.12/ Partitioning the boot drive: https://www.truenas.com/community/resources/i-have-to-waste-an-entire-drive-just-for-booting.187/ Disks type: If you can manage to get the disk to actually spin down 3.5" is doable, but for power efficiency I would advice 2.5" drives. In both cases the biggest drives you can find, funny enough power consumption does not increase with disk size liniar A: I want to max ram before adding L2ARC and don't really have much need for SLOG at the moment. It's a long-term todo.There have been great improvements in idle power consumption in the past years. As an example, c’t published a build for an 11 Watt PC in December 2016. This i7-8700K build, unfortunately, is not as efficient. The best I observed is a little more than 36 Watts. The typical idle power consumption is around 40 Watts. I had initially run Cinebench before any Meltdown/Spectre OS and firmware patches. Once the machine was fully patched and the BIOS firmware updated, and I had verified that the patches fully mitigated the threats, I ran Cinebench again. Encouragingly, the Meltdown/Spectre mitigation did not affect the Cinebench performance at all. The multi-core benchmark result was even 3% higher. If you need Bluetooth only (without Wi-Fi), take a look at the Hama Bluetooth USB adapter 4.0 + EDR. Assembling the Components

I blame Intel’s Z370 chipset, the only chipset currently available for Intel’s 8th generation (Coffee Lake) CPUs. According to other people’s measurements, the GPU consumes a bit less than 10 Watts when idle. Interestingly, it does not matter whether you connect one or two (4K) displays to the GPU. There is not even a significant change in power consumption if you connect a single display to the mainboard’s Intel graphics instead.

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First thing I was thinking about was the chassis. Considering I don't live in the USA right now I need to buy something that can be shipped to Europe someway. I found some good candidates, even from old posts on other forums like this on LTT, and at the end I think I will go with the Node 304. Maybe or not, surveillance does mean your disks are constantly getting data writen, which changes the chances of spin down to about 0. Which means your "idle" would include spinning disks, which is significant. I just told you my setup, which I refered to as an example of the powerlevel you where looking for.

PSU failures are not a "limit" type thing. If you hit a point where the PSU actually fails, you are already so far over the line that irreparable damage had probably been done at a substantially lower load. HP, for example, built their MicroServer Gen 8 with a 200W PSU for a 4-bay AMD Athlon based system. The supply is incredibly underpowered and there's actually a company that has made a good business out of 350W PSU upgrades for it when the undersized supply eventually fails. That's for a four-drive system. Hard Drive Troubleshooting Guide : https://www.truenas.com/community/r...bleshooting-guide-all-versions-of-freenas.17/ Load of disks: thinking about 12-18 2.5" drives + 3 SSD's for Special allocation classes (coming in TrueNAS core) and 2 SSD's for FreeNAS. I do not have the equipment to measure noise emissions, but I can say that the machine is nearly completely silent. Only when there is no ambient noise at all can a very unobtrusive mid-frequency ventilator humming be heard. This does not even change during prolonged periods of high load. CPU Performance Power supplies: https://www.truenas.com/community/resources/proper-power-supply-sizing-guidance.39/Now, really, I've heard all the stuff about how I'm wrong or how I'm an idiot or how I don't know what I'm talking about, and I can serenely listen to that all day long. If you look at 24-or-more drive arrays, the *lowest* thing I have seen is an 850W nonredundant PSU on the Storinator Q30, which is only possible because they stagger spinup (this is also not their default option, which is a dual 1400W PSU). Your typical Supermicro 846 is a pair of 920W PSU's (1840W available to spin) or 1280W PSU's, HP is IIRC redundant 1460W, etc. I have a hard time thinking all these other electrical engineers are crazy too.