Hello,
We have many VM's on a number of ESXi hosts configured with network connected serial ports set as listening server. This has been working for years, and today all of the sudden
all the serial ports on all VM's are offline, and in the VM properties windows they all show "Unsupported" and to the right when the port is highlighted it reads,
"This type of virtual device is supported, but the backing for it is not supported on the current host."
"the virtual machine can still be used on this host, but this device will not be present"
"You can remove this device, but if you wish to keep this device for when the virtual machine is moved back to a host where is will function, you don't need to do anything"
What ever happened it's on the vCenter side. I restarted the VC host, and confirmed all the VMware services started and are running, but no change.
Anyone run into this before?
ESXi 5.1
VC 5.1
Thanks
-John