What three actions should be taken before the upgrade from ESX4.x to ESXi5?
backup the host config using vicfg-cfgbackup command
save custom scripts
backup all .vmx files
create host profile using vCenter server
backup local images
A. B. and E.
a. backup the host config using vicfg-cfgbackup command (yes we would like to backup in case we need to revert )
b. save custom scripts (Yes same as above)
c. backup all .vmx files (Why ? They are on VMFS Datastores which will not be touched during upgrade)
d. create host profile using vCenter server (Why do we need host profile for an existing server, we can manage with the backup )
e. backup local images (Yes any local VIBs, ISO or VM template stored local vmfs )