Went back to slot 3 and both drives show up now. sigh, Heisenbug.
3 Likes
I’m just catching up on this and I’m glad to see you are able to get everything working with going back to slot 3
Anyone got a solid handle on how this works?
I have tried SLOT5 and now SLOT2 (as there seems to be added complexity with 5/6). Only seeing single M2 in ProxMox.
BIOS settings as shipped do not work
Following the manual for the AOC-SLG3-M2M
3-3 Additional Settings
Depending on the system, motherboard, and BIOS version, the following BIOS
settings may be necessary for the proper operation of M.2 NVMe drives:
• Having the CPU IOU settings set to x4x4x4x4 PCIe bifurcation. This option may
be found under BIOS Setup -> Advanced -> Chipset Configuration -> North
Bridge -> IIO Configuration -> CPU Configuration -> IOU Setting -> x4x4x4x4.
• Having the NVMe Firmware Source set to AMI Native Support. This option may
be found under BIOS Setup -> Advanced -> PCIe/PCI/PnP Configuration ->
NVMe Firmware Source -> AMI Native Support.
We have three options to change in BIOS IOU0, IOU1, IOU2
Referring to this block diagram I unearthed it appears SLOT2 maps to 0-3 thus i guessed IOU0
Changing IOU0 to 4x4x4x4 - no change still single NVME. Also No HBA in ProxMox to passthrough only the NVME.
Can someone help? The 45Drives guys think this works out of the box. What am I missing?
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I also followed the second instruction i nthe AOC-SLG3-2M2 manual and changed the NVMe Firmware Source settings
Hi @MCMXD ,
There are a few other threads on here with this issue. according to @technotim [quote=“technotim, post:5, topic:991”]
I also wanted to confirm that auto splitting works fine when using an x8 and x16 card however not when using an AOC-SLG3-2M2 in slot5 while slot6 is populated. This card works great in slot 3.
[/quote]
No updated settings in BIOS are needed. “Auto” will work fine. Try using slot 3
@daemon1001 brilliantly fast reply my man. Thank you
Ohh TechnoTim the big guns, I’ll give it a go right now.
Okay not super straightforward
Got a Intel(R) 40GbE 3.9.11 is unhealthy error after POST. Couldn’t boot into ProxMox. Updated the BIOS via IPMI and - sorted!
Have both NVME’s in ProxMox. Although I can’t see a PCIE device for the HBA to passthrough to TrueNAS. I have read that passing NVME’s through is non-ideal.
Is this the only way with this card?