How to fix VirtualBox apt updating when you get the error Requires installation of untrusted packages
When updating VirtualBox on our Ubuntu server today I received the following error: Requires installation of untrusted package. The action would require the installation of packages from not authenticated sources.
It turns out that the authentication key for the repository had been deleted. Run the following command to resolve this problem
NIC teaming and VMware ESX hosts
I was sent a link to a great article on the NIC teaming options available for ESX hosts and how to configure teaming on the ESX Hosts via vSphere. It also provides examples of what needs to happen on the network infrastructure (CISCO used in this example) to make it happen. All to often articles concentrate on a single technology and you end up with only half the story, and more google fu required to get the complete picture.
http://www.tcpdump.com/kb/virtualization/vmware-esx-server/esx-nic-teaming/intro.html