@Markess, that's a remarkable achievement ! The X10DRI build I carried out last summer was pretty quiet but not as quiet as your HomeLab server.My recommendation in a prior post was in response to your original post concerning using a 2U chassis. Along with the cooling solution in the photo, I'd placed a 40mm fan on the onboard RAID/HBA controller's heatsink (X10SRH-CF) and changed the fan profile using IPMI Tool. With 6 SATA drives I could maintain temperatures with the stock fan-wall fans set to 15% idle and about 33% max.... It sat in a rack about 4 feet from my head for a couple years and was almost inaudible at that distance. The disk noise was much more noticable than the fans.
For that project, I used two of these PWS-920SQ PSUs, did the SQ fan changes, converted the passive SM heatsinks to Noctua NH-U12DX-i4, for which I removed the original Supermicro air shroud, and introduced a couple of coolers - one on the south bridge. I had two RAID cards in there, both based on the SAS-3108. I remember attaching fans to both of these cards (one was a Lenovo 530i-8, to power 2 RAID-1 arrays built on 4 SAS3 SSDs) and the other was a Supermicro NVMe RAID card, supporting PCI 3.x speeds, also based on the Broadcom/Avago SAS-3108 (AOC-SLG3-2H8M2 - powering 2x Samsung PM9A3 of 3.84TB - 110mm M.2 version, also in RAID1), an interesting solution - it worked with the X10DRI, although this isn't an "officially endorsed" combination. But why should this NOT work, anyway.
EDIT (2023/FEB/22) - just noticed a slight error. Both RAID Cards feature a SAS-3408, not an SAS-3108 as initially stated by me.
I was able to materially cool down these RAID CPUs on the SAS-3108 cards with dedicated fans. Used a 40mm or 50mm Sunon on the Lenovo 530-8i and a 60mm Papst on the Supermicro AOC-SLG3-2H8M2. I think the temperature reduction at these controller chips (they have a thermo sensor that can be read out) was in excess of 20°C with this arrangement.
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