Hi We have 3 IBM X-Series Diskless Servers that came with ESXi 3.5 pre installed. We would like to go to ESXi Version 4 (we have a license to do so).
Can we upgrade the USB Keys?
If so can it be done via the host upgrade option after VCentre Server has been upgraded using a zip file or does it need to be done directly from the host ?
Are there any gotchas with this sort of upgrade?