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Not sure why but my backplane doesn't seem to work with any SAS (DA0S2GTH8B0, LSI SAS2008, onboard SAS/SCU ports). It works with the onboard SATA ports. Edit: I just read through your posts again, are you saying the backplane is the issue? It only works with SATA?

Just FYI, you can't mail anything in a standard envelope that isn't flat as it's non-machinable. They'll send it back (likely crushed by the machine). Ask me how I know... First Class Package (now Ground Advantage) is your best bet but it will be >= $4 iirc.

Has anyone tried 64 GB LR-DIMMs?

WTB 8 of these modules. I only need 7 but I don't presume anyone wants to sell an odd number.

I wonder if someone could design a board w/ a microcontroller that measure the high/low voltage and converts it to PWM duty cycle. If something like that doesn't exist already...

Curious what came of this. I can get quiet enough fans but the coil whine is killing me.

I have a 6450-48P. If you end up trying the 15K do let us know how the coil whine is.

I tried ARCTIC S4028-6K, fans report failed as expected but more interestingly, when they throttle down the board (not the fans) makes an annoying squealing sound (coil whine) :/ Sunon HA40201V4-D000-C99 cause the same board squeal.

Very cool! Please keep us updated.

Could you add some pics of the dual rear drive cage? I should purchase one as well.

If I'm reading you correctly, you can fit another 2.5" rear cage? That's news to me. If so I'll have to buy one and try it out.

I would try flashing it with DOS. Just be very careful, do it from a physical monitor and keyboard, not via the remote console. Make sure you flash either 7.76 or 3.76 depending on your board revision (current version). If it goes wrong, it's not insanely difficult to flash the chip, if you have...

Yikes, that looks bad. I could sell you my Nidec fans if you want. Fair warning, rootwyrm has informed me that any such fans ordered from eBay, AliExpress, Amazon, etc. are certainly counterfeit. The only way to get genuine is order them from an actual distributor (DigiKey, Mouser, Arrow, etc.)...

Pictured are the Arctic fans in my server. I bought these rubber grommets since the OEM ones seemed to be close to wearing out and I didn't want to break them. They work, but you have to cut the tips off after installing them and jam them into the slot.

The physical connector on the mezz is the same but the riser connecting it to the motherboard is different. You can see it in this listing: QS3008-SAS Quanta QS3008 8-Port 12G SAS PCIE Mezzanie Raid Cont. w/board | eBay On second thought, maybe the header just needs to be connected to...

I would actually recommend the Arctic S8038-7K or S8038-10K; they can be had in a kit of 4 on Amazon for about the same price as real Delta fans from Digikey, but with free shipping. They are pretty quiet when PWM'ed down, but I haven't stressed the server and checked the temperatures yet. I...

Damn, I used to have access to a ton of these but no more...

I bought a QS3008 and it did NOT work. Even though the physical connector is the same, the piece that connects it to the board is not. You can see the one I bought here: QS3008-SAS Quanta QS3008 8-Port 12G SAS PCIE Mezzanie Raid Cont. w/board | eBay. I have doubts that te QS3108 is any...

It looks like you can but it's hidden, if you change the URL for one of the navigation items to configure_root.html: Edit: The web console security is pretty bad. It can be used to dump the the SSL cert private key, and probably any other file...

I hope this is helpful for anyone having the fan issue. My fans were always on full blast, all showed 0 RPM and critical in the BMC. The backplane firmware also showed N/A. A while ago I had replaced the motherboard and then swapped it with the original again. I must have plugged in the...