Completing Migration › Scenario: Run Your Old Region in Parallel with the New Region

Scenario: Run Your Old Region in Parallel with the New Region

If your existing region uses global mode AUTOMATED to perform desired state management, you can ease your new product regions into production as described in this section.

If you do not want to move directly from your existing regions to the new regions, you can do the following:

1. Create an equivalent region for each of your existing regions, so that you have a mirrored pair on each system.
2. Initially, have the existing region performing automation, and the new region running in the global mode of MANUAL (that is, merely monitoring) but using the same data.
3. Gradually, reverse the global mode of operation between the mirrored pairs until the new regions are performing automation.

This suggested scenario provides you with a hot backup, letting you instantly swap from a new region to the established region if you experience any problems. You can then correct the problem before swapping back to try the new region again.