Legacy ISO images

did you attach the ISO to server (via ILO) or did you try with a bootable USB?

I suggest you try with a bootable USB.

if you already tried that, check if the bootable USB is able to boot properly on another computer (VM).
 

Already tried CE works to a point on another machine, and its OK

I have been told by a college that he had same issue and got older ISO image and it worked 

are you attaching the ISO via ILO or via a bootable USB?

both ways, used yumi as i find this the best option for bootable usb images and i was even considering Buring a dvd 

create the bootable usb with rufus. make sure you select mbr if the dell server is using bios. choose gpt if the dell server uses uefi. 

already tried both routes of UEFI and MBR, it boots and bombs out, i was advised that the 2018 or 2020 version of the installer would resolve my issue, as there is no storage presented, as that will be added after as raw drives via 10 gig card

Please create the bootable USB stick with Rufus in Windows. Dont use ilo mounted. And please share are screenshot with the error you have. 

will do :)