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Developing DR plan: DR and VM guest migrations over L3

By the end of this year, we will have 4 small data centers at 4 sites, each with 2 VM hosts.

Each site and DC has a unique set of subnet and vlans.

Of the 2 VM hosts at each site, they would provide DR to each other and not DR between the sites.

Our current DR plan is that if Site A goes down and we lose access to datacenter A, then site A is down and we do not attempt to migrate VMs from Site A to Site B.

We expect that migrating guest from Site A to Site B, each with unique subnets would be too complex with too many dependencies.

We would just accept that Site A is down. If Site A is down, then something big is happening anyway.


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