How does VMware vCloud Availability interoperate with vCD Cross-VDC Networking?

I get this question quite a bit due to the new vCloud Director 9.5 Cross-VDC networking functionality – does vCloud Availability for Cloud-to-Cloud 1.5 (C2C) work with stretched networking inside of Cross-VDC networking?

The answer is: yes!

This is another great addition for recoverability considerations as one could fail over between vCloud Director instances without modifying the guest OS IP address. Furthermore, based on the application architecture, one could have active-active applications and ensure replication/failover in the event of a disaster.

Let’s go through my example high-level design I’ve worked up in my lab –

Example Cross-VDC setup with vCloud Availability for Cloud-to-Cloud 1.5

In the above diagram, we can see I have two active vCloud Director instances, Site-A and Site-B. I have two organizations, “Daniel” that resides in Site-A along with “Daniel-B” that resides in Site-B.

C2C is deployed on each site in the combined model and I have multi-site pairing completed so I can easily manage this between my two sites –

Within my Cross-VDC networking setup, I currently have my active egress setup to Site-A as depicted in the diagram above.

Last of all, I ran a protected workflow from Site-A to Site-B for my Stretched-vApp-VM –

From there, one can either migrate or failover the workload and without any guest OS IP changes. I am going to do a video shortly, but here’s a short GIF I created that shows the ease of use of failing over between my Site-A and Site-B –

via GIPHY

After failover, I can then access Stretched-vApp-VM from the new NAT address on Site-B.

An Organization Administrator could also configure active/active or active/passive egress points for additional resiliency. This provides further capability inside of vCloud Director, especially with stretched networking and a complementary availability solution.

Thanks!

-Daniel

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