T7920 NVMe backplane with HW raid

Hi All,

Disclaimer: I understand that this is not officially supported configuration but I would like to check if somebody is aware of any fundamental issues with the setup or incompatibility.

I have T7920 with NVMe backplanes in two Flex bays. Both work as expected when connected directly to motherboard. I have a need for a HW raid-5. 

Perc11/H755 seems  to be reasonable priced for the performance, so I gave it a try and as of right now it doesn't work (doesn't detect nvme and/or backplane)

Questions:

*  Have anyone tried to use Dell T7920 NVMe backplane with any NVMe or TriState controllers ?

* Is H755 "locked" to Dell backplanes ? Can it theoretically work with 3d party backplanes like one icedock ?

P.S

Firware is updated to latest version 

WRT to cable, other users on this forum reported a success with using DiliVing SlimSAS LP 8X to 2*MiniSAS HD 4X,SFF-8654 LP  cables with h755 in Dell servers. So I'm using a pair of these.