I'm using the vSphere client. When I create a new Virtual Machine I have a selection drop-down to choose the OS version. Except 32bit and 64bit version which I understand (because it's hardware related), I am wondering what difference does it make for VMware if I choose a specific version rather than another.
What difference does VMware if I choose RedHat 5 or RedHat 6? Does hardware look different? Is it just for information purpose? Why vmWare even has to know what operating system the guests are running on?