The customer has successfully completed a Non-Disruptive Migration.
Use the simulator to verify migration sessions and remove the migration environment.

Correct Answer:
See the explanation for step by step solution.
Explanation:
Okay, I understand. The task is to verify the completion of Non-Disruptive Migrations (NDM) and then remove the migration environment using the Unisphere for PowerMax simulator.
Here's a step-by-step guide on how to do this, based on typical Unisphere functionality and the context of the question:
Steps:
1. Launch the Simulator and Navigate to the Migration Section
* Open Unisphere for PowerMax in your web browser.
* Log in to the simulator.
* In the left-hand navigation pane, locate the section related to migrations. This is usually under either:
* Data Mobility
* Migration
* Expand the relevant section and click onMigrations(or a similar option like "Local Migrations" or
"NDM"). This will take you to the view where you can manage Non-Disruptive Migrations.
2. Verify Migration Session Status
* The Migrations view will list all current and past migration sessions.
* Look for the following status indicators to confirm that the migrations have completed successfully:
* Status:The status should typically be "Completed," "Cutover Complete," or a similar status indicating successful completion.
* Progress:If a progress bar or percentage is shown, it should be at 100% or show that all data has been synchronized.
* Important:If any sessions are still in a "Running," "Synchronizing," or other non-completed state, do not proceed with removing the migration environment. Wait for them to complete.
3. Select Completed Migrations for Removal
* Once you've verified that all relevant migration sessions are successfully completed, select the sessions that you want to remove.
* You can usually select sessions by:
* Clicking a checkbox next to each session.
* Clicking on the session itself (if the interface allows it).
4. Remove the Migration Environment
* After selecting the completed migration sessions, look for an action button or menu option to remove them. This might be labeled:
* "Remove"
* "Delete"
* "Cleanup"
* "Remove Session"
* Click the appropriate button to initiate the removal process.
* Confirmation:You will likely be prompted with a confirmation message to make sure you want to remove the selected migration sessions. Verify that you have selected the correct sessions and confirm the removal.
5. Verify Removal (Optional)
* After the removal operation completes, the Migrations view should refresh.
* Verify that the migration sessions you removed are no longer listed.