@snorkel Did you make it running, I mean your new build? How do you like it? How is your system overall power consumption? And does Oracle Linux 9 with UEK works on it (yeah, I know its Linux like many other Linuxes but the cool thing is that AFAIK, it almost does not require any reboots, even between kernel updates, thus I like it)?
Still waiting for RAM and HDD in february. And… I received the ITX mobo too, because they didn’t canceled my order. Now I have to build 2 systems. I managed to found a PSU on Amazon, DTK 90W 19V. I hope it’s good.
Please post a short review if you find some time and make it running.
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So after 3 months of running the new build, with 2 Exos 22TB drives, 32RAM, 1 Noctua case fan at base speed, Cyberpower UPS with true sinewave, the average consumption taken for the last month is 35.9Wh, UPS included. The unit is managed through SSH, without display, mouse or keyboard. Maybe the new increased network load will increase the consumption a bit, but for now this is the most accurate reading.
When I have time, I will make an Ubuntu Server setup guide with all the settings I’ve made, for any newbie outthere like me, who dosen’t have the time to read all the man and help pages. 
And you ended up going with the N100 motherboard? 
Yep, the components are mentioned previously.
n100, asrock mobo, 32 GB Samsung DDR4, nvme, 1 noctua case fan… maybe I will put a pic, but I don’t want to move it right now. The main panel faces the wall. It’s the quietest build I have.
It stays near my bedroom, dosen’t make a sound, makes money and it only takes 100$/year to live. Guess what it is? 
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Very cool friend, have fun with it
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Per hour, per month? The unit Wh doesn’t make sense without a time duration. I guess you meant “average consumption taken for the last month is 35.9W”
I don’t know about you, but on my electric bill the cost is based on kWh, meaning you pay x fiat for 1 kW burned in 1h. Also my minicounter displays the consumption in kWh. So in 1 month, more precisely 766 hours, I registered 27.5 kWh, which translates in 35.9 Wh, Watts in an hour.
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Ah, the wonderful, everlasting confusion between power and energy.
It never ends
So if your device used 35.9 Wh of energy in an hour on average over the month, then its power use is 35.9W
So you’re both right! 
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NEW HOT BUILD!
I’m building a new Storj rig that will work (hopefully) without UPS, in countryside. The grid is pretty stable, but once in a while there are power outages, more than 1/month. Can’t use UPS, because of the install location, so I need components with power loss protection (PLP), meaning SSD/NVMe for OS and HDD for storagenodes. The rig must also be quiet, so as little fan movement and drive vibrations as possible.
Reading through the web, there seems to be 2 main PLP categories for SSD: for consumer devices and for enterprise devices, that basically offers more time to flash the preciuous data onto non-volatile memory. Looking to main SSD manufacturers, I only found Kingston DC drives with PLP. If you know of other models, let me know.
As for HDD, Toshiba MG series drives have the Persistent Write Cache Technology for data-loss protection in sudden power-loss events (512e models).
So, the components that I choosed are:
- case: Fractal Design Node 304 black (for 6 HDDs) - I wanted a 2 bay case, with rubberised drive support, but I couldn’t find any;
- mobo: Asrock N100DC-ITX with Intel N100 CPU and passive cooling;
- PSU: DTK DL-90W laptop charger (19V, 4.74A, 90W);
- RAM: Samsung 32GB DDR4 (M378A4G43AB2-CWE);
- M.2 drive: Kingston DC2000B PCIe 4.0 NVMe 240GB enterprise SSD (SEDC2000BM8/240G);
- HDDs: Toshiba MGxx - xx TB.
Another way too expensive build for storagenodes, snorkel style. 
Watt? Watt? Watt? (20 char)
Explain. If you can connect the pc, you can connect the ups.
Forget about those. Buy used enterprise ones.
It won’t be quiet. There is persistent stream of io
Marketing fluff. Ignore brand names and various gimmicks. Get cheap datacenter class used ssd from eBay, they are $20 a pop. Cheap used/recertified hard drives. Under $10/TB. Cheap old server hardware (under $50 for server motherboard and processor, about $60 for 32GB ram). You need IPMI for remote system when it’s invariably fails to boot from your unfiltered power. Server enclosure another is $70.
Especially for a remote system you want to avoid using new parts. Nor consumer parts.
Forget about consumer motherboards and power supplies.
It’s very hard to design a system to withstand abrupt power losses and brownouts, let alone remain performant. Making some storage devices effectively synchronous wont help, unless entire data path is synchronous. At which point you can scrap the whole idea because no hard drive can withstand slightly higher-than-current io load.
There are crutches, like journaling, and aforementioned PLP, coupled with write-through caching can get you close but at the enormous cost in performance.
And then still no one guarantees that the brownout won’t hang your system. Or introduce irreparable filesystem damage. Or a power transient corrupt ram.
Fortunately, there is an easy and cheap solution. A used UPS.
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Is this a real advantage or just a marketing claim? I mean other manufacturers having support for hot-plug as well which includes handling of a sudden power loss in my opinion.
Well, an APC UPS failed on me after 2 years, abruptely powering off a business server. And it wasn’t to much draw from the system. So it’s not fail proof. Also, to keep hunting for battery replacements is an adventure in itself.
Second, the location is not mine, and they allowed me a nice Fractal case to occupy the self. They won’t allow an ugly heavy UPS there.
I will put a picture when it’s installed.
So PLP and no UPS is the way.
And I’m more optimistic about PLP.
I didn’t used them until now. @Vadim uses them, he can share some real expiriences.
I do not have any big problem with them, flash memory dont save from data lost in ram. As today storj not ensure anymore that data was written to hdd. It was tradeoff for speed as i remember. Please correct me if i am wrong.
What UPS?
Lead acid batteries last about 2 years. UPS should have told you when it’s time to replace because it’s supposed to be running self-calibration periodically.
Failed how? Not every APC product is worth buying.
Nothing is. But that does not mean “ups are useless because they sometimes fail”.
Why? They use standard batteries. They are plentiful on eBay and cast almost nothing. Measure the size and buy literally any battery. Even shitty ones are good enough.
But a pretty and lightweight one :). There are models with LiPo batteries — much lighter and last much longer.
Trying to design the system without ups is an uphill battle, entirely avoidable with a keg of beer delivered to the host along with the UPS. Or whatever other arrangements you’ll find.
It’s really strange that they allow noisy grinding box but not silent ups.
No it isn’t. What about ram? What about the rest of the system not expecting power loss? What about hangs due to unfiltered power? Just don’t.
Of course you can do your way, suffer for a few months, and then buy an ups. But why waste time on something with a known outcome…
And then I have a bigger question on feasibility of the whole setup. Who pays for electricity? What else will this machine run? Because dedicated storj computer is a waste of time and money. So I assume it’s also a remote backup target. In which case you also need an ups.
I am not agree, good battery last 3-5 years. Dont buy shitty it can go to fire under havy load.
Battery shold be with F2 contacts minimum.
If a “good” one costs $60 and shitty one costs $10 and lasted twice as short — I’ll continue buying shitty ones.
Btw if you unpeel APC label from their batteries you will find crappiest shittiest brands underneath, whatever they found cheap that day.
Lead acid batteries today is a solved problem. There is no need to overpay for “good” ones. The difference is imperceptible.
If you refer to AGM — those require different charge profile, most UPS don’t support them.