Hi, It doesn’t look like the version you linked supports the R740. Try this one  <ADMIN NOTE: Broken link has been removed from this post by Dell>
I tried to install ESXi on a brand new Dell PE R740, but during the installation it does not see my virtual disk. Before installing VMWare, I first created a RAID6 vdisk and did a fast initialisation. When I boot from the VMWare installer on an USB drive, it only shows the USB drive as an option to install to. I have also tried to install it from a virtual disk image using the Dell LifeCycle Controller software (which loads drivers specific for the OS installation), but same result here. Any ideas? BTW: I am using the Dell ISO from location: link [URL]
VMWare ESXi 6.5 does not detect RAID 6 virtual disk on Dell PowerEdge R740