So, if you power down a mining rig with 1000 S19 miners, how long will it take to get the hash rate stable again once you turn them back on?
Now, let’s say you only want to mine for 10 minutes every hour. You’d start the machines, mine for 10 minutes, and then shut them down for the rest of the hour.
What’s gonna happen to those miners? How long will it take each time to boot up and get back to stable operation?
And are there any other possibilities or issues to think about?
I know these questions seem a bit odd, but trust me, there’s a point to them.
Also, how much money could you save on electricity if you completely shut them down versus just pausing mining for 50 minutes?
First, the hashrate needs to become stable locally on the miner itself, most miners go through a warm-up/tune cycle before reaching full hashrate, depending on the miner's model and firmware, this could take anywhere between 1 to 60 minutes, it depends on a lot of factors.
For the hashrate to become stable on the pool, it's a matter of luck and pool difficulty, and whether or not the miners run behind a proxy, but usually 5-10 mins, depends on the pool of course, some of them have 5m hashrate display, some have no less than 15 mins so you can only tell when 15 mins had passed, but rest assured, every share you submit counts even if the chart on the pool page doesn't catch up fast enough.
This will probably reduce their lifespan.
When you shut your gears down, you save 100% of the electricity they use, but then you gain nothing, in fact, you spend more energy by doing so, the warming up, fan check and the rest will consume power for no gain in pool shares, so there is no gain at all, what are you up to anyway?
As mikeywith said, the risk would be to make some serious damages to your hardware with this strategy.
You could power on your ASICs during 3 days per month, you would have the same number of shares submitted, and less risk, less things to do yourself like that.
Or you could just mine with 10% of your S19s h24.
In general my ASICs need 5-10 minutes to mine at their full potential after I've power them on but it depends of the firmware. Sometimes, some pools need some more time to show the shares submitted and the real hashrate you are sending to them. Even if the shares are ok and still accounted, it shows some low values during the first hour.
With stock Bitmain firmware it takes a longer time to run stable and at full hashrate, than with Braiinos for example. But Braiinos is stealing 2% (not sure about this number but it's the one I think I remember) of your shares as a dev fee...
Ya, it's different from one model to another, in fact, I have several miners that take longer than the others despite having bought them in a single batch, stock firmware is always slower than most custom firmware.
It's 2% for Antminer S9 and 2.5% for everything that comes after that (S17 and S19 series), but I think the word "stealing" is wrong! They aren't stealing anything, it's the fees they take for their efforts, it could only be called "stealing" if they did not inform you about it beforehand, however, it's clearly stated in multiple places that they do indeed take x% as firmware fee.
I think you talking about sleep mode where you can switch the miner from low, normal mode to sleep mode.
Even if the miner is set to sleep mode the miner will still consume power not 100% because the fan still running at low speed.
What I guess you might have free power on daylight and you don't want to mine at night because you would end up paying electricity bill?