3. After this is achieved and all of the application components’ connectivity paths have been reconfigured and tested, the original server can be safely shut down and all of the references to its decommissioned address from the firewall rules can be removed.
Remember that even in the most poorly documented data centers, firewall rules can provide vital information regarding which applications will be affected when a server is migrated and which groups of servers will benefit the most from being migrated concurrently. Using existing firewall rules in this manner can help get to a private cloud faster, without disruption.
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