May 30, 20251 yr Author Thank you @Wody for testing the Genuine Modules CAB-8654i8-2x8087 cable and verifying that going directly from a Broadcom 9500-16i and 9600-24i to a 8087 backplane does not work. I will try to email Genuine Modules to let them know.By any chance can you post a picture and information about the 6843+6843-8087 adapter in the working scenario? Edited May 30, 20251 yr by beanmeister
May 31, 20251 yr 1 hour ago, beanmeister said:By any chance can you post a picture and information about the 6843+6843-8087 adapter in the working scenario?This picture isn't very clear because of all the cables, this is an X11SPL-F motherboard with 192GB RAM, 2xConnectX-4 Lx and my 9600-24i. There's also a USB with unraid and a TPM module installed. For cables, it's this ( from HBA to adapter without the baffle and then this to the backplane. Together it's all less than 1m/3 feet so it stays within SATA standards. This is a 2u case with 12 hotswap drives, so there's 2x3 cables and 3 adapters. I also use the same 8654 to 8643 in my other server which has a 8643 backplane.For price comparison, with a 9400 you can get away with these. But, I didn't use these because together with the 8654 cable it was longer than the SATA standard allows. Chenyang now also makes a 6843 to 6843 coupler which is cheaper, but I can't find shorter cables than 0.5m which means together it's already 1m so outside of SATA standards. If you only use SAS drives, you can go to 3m (10 feet) so then it is less of an issue.
May 31, 20251 yr Author Wow, that would mean 6 adapters for me, too messy. What 8087 backplane are you using (make and model)?
May 31, 20251 yr 2 hours ago, beanmeister said:What 8087 backplane are you using (make and model)?No idea, the case is sold by a brand, but its not their design, they just buy the cases from China and market them as their own, without any modifications. It's a dumb backplane, so it only has power-connections and the SFF-8087 connector. Since I found out where it came from, I looked around and got a case out of China directly, also from a reseller but much more modern, that does have a brand-name on the backplane, which is OTT. The one I have comes with 8643 connectors for 12gbit, but they make a backplane with U2 as well now.
May 31, 20251 yr Author So I found two sources regarding a SFF-8654 8i to 2x SFF-8087 cable by CableCC that may work.In this ServeTheHome thread and a user review of the CableCC on Amazon.
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