Hi All,
I have an IBM (x3630 7377) server with a USB key with ESXi 5.0.0 . The usb stick was provided by IBM. The server is in the ESXi 5.1 HCL.
I have no HW monitoring (on current ESX 5.0) so I was thinking about upgrading to ESXi 5.1 .
Question is: can I upgrade to 5.1 without starting bare bone (reformatting all disks as happens with first install)? Is there any risk of loosing the VMs already in the server due to the upgrade?