If any of the three ESXi vfat disks are full, then ESXi upgrades will fail with error like:
Upgrading hypervisor.
ESXi upgrade failed on host 192.0.2.1. Failed to apply profile HX-ESXi-6.7U3-15160138-Cisco-Custom-6.7.3.3
HyperCheck can detect this with ESXi command:
df -h | grep vfat | grep 100%
In this failed upgrade instance it was partial files which had to be removed:
/vmfs/volumes//packages//vmtools/.filepart
If any of the three ESXi vfat disks are full, then ESXi upgrades will fail with error like:
HyperCheck can detect this with ESXi command:/packages//vmtools/.filepart
df -h | grep vfat | grep 100%
In this failed upgrade instance it was partial files which had to be removed: /vmfs/volumes/