PCIe lanes, usb 3 controller cards, IRQ - troubleshooting
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@Propagandalf you can run 100 drives off 2 controllers, plus that motherboard has it's own, so 3 controllers
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@Focus Definitely, but if my calculations are right I should be able to reduce reads times even more by having an increased number of controllers. With two cards working it gives me 8 controllers, plus the system has 2 controllers from before. To get optimal readings I should have 2-3 HDDs connected to each controller, I believe.
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@Propagandalf negligeable I would think. I read 213TB in under a minute with one card, and I believe luxe is at 30 seconds with that card
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@Focus Sounds good, but I am trying to build a lightning fast miner =)
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@Focus I have a comparable controller-card like that sonnet one, and on every USB3 port i have a external case with 4 drives ... it also depends on drive size ... with 2TB drives it can be some more.
From my point of view @Propagandalf did everything right, to build a USB based storage solution.
But sure you are right it is quite overpowerd, maybe he has some sweet 10TB drives with 220MB/s :-)@Propagandalf you have gpu in first PCIe next to CPU right? Thats the x16 one.
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@luxe
I have a midi tower with extra fans installed,so no space in PCIe slot 1 for GPU(edit: trying to put GPU here now). So, I have it in PCIe slot 7 instead, and have tried the controller cards in PCIe slot 1-5 (6 is blocked by GPU). Each slot is x16 on this mobo, according to the manual.
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@Propagandalf
7 x PCIe 3.0/2.0 x16 (single x16 or dual x16/x16 or triple x16/x16/x16 or quad x16/x16/x16/x16 or seven x16/x8/x8/x8/x8/x8/x8)
You have to put GPU in slot 1, to get full speed! (if remaining 5 are used)

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@Propagandalf it could be you are drawing too much power from the PSU when the third card is installed. Try the 3 cards with a more powerful PSU to see if that works.
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I now have GPU in slot 1, and two controller cards in slot 6 and 7. That works, but again when I plug another controller card into slot 5, it won't boot. This might be of interest: The Dr debug error code I get is "96", which apparently means "PCI bus assign resources". The signs still point to some kind of non-optimal resource assignment for the PCIe slots. Maybe there are other ways I can tweak the settings?
My PSU is 650W, so I don't think that I'm drawing too much power with these cards, unfortunately I don't have a more powerful PSU to test it with.
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@Propagandalf if the motherboard has a on board gpu, remove the extra GPU to draw less power or else use a less power hungry GPU card if you have one available. If either works then you know for sure its a power issue.
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@iKnow0 I don't have either of those alternatives, unfortunately.
Edit: I think the rx470 uses about 130W during heavy load, which isn't all that bad.
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@Propagandalf borrow a more powerful psu or old GPU, most gamers will have both spare.
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@Propagandalf you could also work it out using math and the specifications for each device.
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@iKnow0
I could do that of course, but this system was built by professionals at a local IT shop, so I find it strange if the PSU is not powerful enough.I did a rough calculation a few weeks ago and came to the conclusion that I'm using quite a bit less than what the PSU supports.
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@Propagandalf do you have any other psu's?
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@iKnow0 Not currently, but I might be able to get hold of one in a few days.
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@iKnow0
OK, so I got hold of a 750W PSU, but when I replaced it, I can't even turn the machine on, there's no action whatsoever unlike before. The PSU worked on my friend's computer, so not sure what is going on.I re-used the cables from the old PSU on the new PSU to save time and fiddling about, was this maybe a bad idea? Are cables universal between different makes of PSUs? If this is the issue I will try again tomorrow with the "correct" cables, but I have run out of time for tonight.
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@Propagandalf double check all cables are secure
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Your problem is not the PSU, you POST fine with 2 cards but not with 3, the 3rd card pulls milliamps at best. You have an interrupt problem, hence your code 96
Go into BIOS, make sure Graphics adapter is set to PCIe, make sure to disable onboard graphics, disable whatever you can that you are not using such as legacy USB, lpt or com ports, etc...
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I think @Focus is right about the PSU, but for what it's worth, cables are not always compatible between different PSUs, even if they have the same connectors. Be careful, don't fry your motherboard or components!

