Thanks! Do you know if gen9 and gen10 are they both Sas3?
Hmm, not encouraging that the person mentioned the gen9 one didn't work (maybe they connected 3.3V and it's acting as spindown control? )
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Adapt a HP DL380 Gen10 NVME backplane to a standard ATX power supply?
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Hmm, not encouraging that the person mentioned the gen9 one didn't work (maybe they connected 3.3V and it's acting as spindown control? )
Hey thanks so much for this info!
In that picture of the connector which pin are you considering pin 1 and pin 5? I'm confused on the pin ordering.
Maybe it's also a silly idea but it's certainly out there to maybe just cut and solder your whatever standard cable that goes into ATX PSU to the backplane? Because that's what i sometimes do when i don't have time to look for a more flexible solution. You can always desolder as well 
The PSU backplane is a 5pin MicroFit 3.0 connector part 0436450500
The connector that goes to the drive cage is a 6pin MicroFit 3.0 2x3 connector part 0430250600
You need to be very careful of building out your own. The ones that HP uses, can do 9A per connection. In fact HP uses 16AWG wire on these, something that I have never seen before.
If you source these on eBay or Amazon you can end up with ones doing 5A and using 22/24 AWG wire. With SAS and NVMe SSDs capable of doing 25W ~ 30W, that is a recipe for disaster.
So apparently the NVME option doesn't seem to work (at least I can't make it work). Tried in a few different boxes and nothing seems to detect despite power getting to the backplane. I probably need to have some HP Tri-Mode adapter to make it work Oh well.
Oh well.Dang. Can confirm this. I just tried with a c-Payne adapter on an X11 DPH-t. The adapter does bifurcate and work when connected to slimsas 8i => slimsas 4i and a drive.So apparently the NVME option doesn't seem to work (at least I can't make it work). Tried in a few different boxes and nothing seems to detect despite power getting to the backplane. I probably need to have some HP Tri-Mode adapter to make it work
But when connecting an 8i => 8i cable to one of the cage ports - nothing happens, can’t see any drives that are in the cage
Any HP experts that can help us ?
Does the cage need an tri mode adapter?
I was looking at the PCIe riser in the HP diagram and they don’t look like they’re attached to any adapter. EDIT: here's an example HP riser. It looks like a 2 x PCIe 16x board, with the NVMe lanes directly coming off the CPU rather than any adapter ...
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This is the cable pinout I have been using:
Which corresponds to
At least for the SAS cage, using just 12V and GND seems to be enough. But for the NVMe cage, I just can't get it to work. Is the 3.3V needed for the NVMe cage? Would be interesting if it was.
The drive definitely gets power with the current layout, but I can't see anything on the NVMe side inside the cage, despite testing it in EPYC and Intel motherboards. The PCIe slot the cage is connected to is fine - it's set to x4x4x4x4 bifurcation and I've tested that drives connected to the slot appear and work fine
@ano - did you manage to measure the voltages on the HP NVMe drive cage you had in your lab?
Which corresponds to
At least for the SAS cage, using just 12V and GND seems to be enough. But for the NVMe cage, I just can't get it to work. Is the 3.3V needed for the NVMe cage? Would be interesting if it was.
The drive definitely gets power with the current layout, but I can't see anything on the NVMe side inside the cage, despite testing it in EPYC and Intel motherboards. The PCIe slot the cage is connected to is fine - it's set to x4x4x4x4 bifurcation and I've tested that drives connected to the slot appear and work fine
@ano - did you manage to measure the voltages on the HP NVMe drive cage you had in your lab?
A few folks on the thread talked about helping and measuring the voltages from a working HPE chassis but didn't hear anything after that. I've tried searching forums, posted here and on Level1Techs, but no one seems to know anything about these NVMe cages ...
I have one of these and I'm pretty sure you need a Tri-mode to run it unfortunately... maybe someone is brave enough to try these on some cheap tri-mode adapters and report back?
That’s weird because judging by the connections from a HP Gen9 - these would work directly from the CPU PCIe lanes and not from Tri-Mode controllers. In fact the HPE forums have techs advising that the cages *need* dual CPUs, ostensibly to provide a sufficient quantity of direct PCIe lanes
Did you try with 3.3V? I might just yolo pin3 with 5v. Also I very much doubt that you need a tri-mode storage controller
I’ve tried with 3.3V and no luck. The only other thing I can think of is that the riser is actually PCIe 16x and not 2 * 16x. Which would mean the SlimSAS 8i connectors are in reality providing 2x lanes instead of 4x. Could explain why it doesn’t work on a “normal” SlimSAS connection