An interesting topic that came to our attention is how to migrate VMware vCloud Director® vApps from one distributed virtual switch to another. Recently, from the experience of one of our field consultants, Aleksander Bukowinski, we received a detailed procedure to overcome the possible service disruptions due to such a move. Aleksander has also authored a whitepaper on this topic that will soon be available for our audience in VMware Partner Central. The paper also covers in detail an additional use case with Cisco Nexus 1000V and provides PowerShell and API call samples.
Depending on connectivity mode, we can have five different types of vApps in vCD: directly connected, routed, connected to routed vApp networks, isolated, and fenced. The migration process would not require shutting down the vApps while the migration happens, but rather could generate brief network outages in case the VMs are connected to a vCloud Director Edge Gateway, or no outage at all if the VMs use isolated networks with no dependency to the Edge. Continue reading