Raid BIOS will be installed only if there has bootable volume existed. If your volumes are created by 4Kn drives, it is not bootable.
Please check the following FAQ link for VMware support 4Kn devices.
FAQ: Support statement for 512e and 4K Native drives for VMware vSphere and vSAN (2091600)
Tags: 4KN drive, BIOS, VMware