You have a VM that is part of a port group on a distributed switch, however the network adapter is disconnected. When attempting to enable the network adapter for the VM by ticking Connected in Edit Settings, it fails and you get the error message of: Invalid Configuration for device '0'.
I had the same problem and here is how I fixed it…
Once I built my ESXi 5.5 hosts in my test lab and added them to my vCenter environment, they both had a yellow warning prompt stating: “No coredump target has been configured. Host core dumps cannot be saved”
The good news is I was able to fix this, so I thought to document the solution in case anyone else has the same issue. All the details are below…
I wanted to upgrade the memory on my vSphere 5.1 vCenter server to 16GB and I didn’t have hot-add enabled. I powered off the VM, connected directly to the host and re-configured the VM as required and then clicked OK.
At this point, I got an error saying “Access to resource settings on the host is restricted to the server that is managing it: X.X.X.X”.
The host things it is still being managed by vCenter so it won’t let me edit the VM. vCenter server is powered off so that I can edit the VM (as hot-add is not enabled the VM has to be powered off to change the memory amount).
This is how to fix this issue…..
In October 2014, I wrote an article about what I was looking to build in my new home test lab. Since then I have been hard at work setting it up and I have made a number of design changes since then. Here is an update on my progress…
Carrying on the theme from the Active Directory FSMO roles article, I thought I would put a little information around another really important AD component – the Global Catalog server.
The following article covers what is the Active Directory Global Catalog server, why it is important and the best practises around its placement…
Every new Active Directory forest/domain requires certain FSMO roles to be available in order for it to function successfully. The good news is that these roles are automatically installed by default. Although they are installed automatically, it is still important to understand the purpose of each FSMO role and where best to place them within your environment.
The following article outlines the function of each of the Active Directory FSMO roles, their purpose and more importantly some considerations around their placement.