We have 3 ESXi hosts using VMware 5.1 Update 1 and we just purchased a new ESXi host. A new ESXi host is an HP ProLiant DL380 Gen9. That new ESXi Host will not work with VMware 5.1 Update 1.
Hence, we must update our other ESXi hosts in order for all servers to be on the same version. Every time I have worked on an upgrade with a consultant, the process has been mistake, try again, mistake try again, mistake try again. BY the time we got it to work my head was spinning after the 5th attempt and I am not sure what actually worked.
My questions are:
1. How can I collect the correct software and then install the new version on each ESXI host?
2. Is there a backup that we should do?
3. Will I need to recreate the Network card (VNics) on the ESXi host.
a. What is all involved?