You are thinking right. Do one upgrade at a time. 4.0 and 4.1 also can coexist, with no problem, but the ideal is to upgrade.
http://www.vmware.com/pdf/vsphere4/r41/vsp_41_upgrade_guide.pdf
Good luck with that.
You are thinking right. Do one upgrade at a time. 4.0 and 4.1 also can coexist, with no problem, but the ideal is to upgrade.
http://www.vmware.com/pdf/vsphere4/r41/vsp_41_upgrade_guide.pdf
Good luck with that.