I did something similar, I downloaded the Ubuntu idrac service module for a r650 from dells support website and grabbed the OSC.deb and dcism.deb file to install on my servers (a mix of r640s and r650s). After enabling and starting dcismeng via...
I was able to install on PVE9.
I get Systems-Management_Application_WMJ1N_LN64_5.4.2.0_A00_02.BIN from Dell, extracted and installed dcism-5.4.2.0-4048.ubuntu24.deb and dcism-osc-7.4.2.0-221.ubuntu24.deb
No error given and after that i simply ask...