If you are using the 7-Mode Transition Tool (7MTT) 2.2 or later and Data ONTAP 8.3.2 or later to transition an ESXi host, you can test your transitioned clustered Data ONTAP LUNs to verify that you can bring your host and applications online before the cutover phase. Your source host can continue to run I/O to your source 7-Mode LUNs during testing.
To avoid IP/MAC or UUID duplication or conflicts, test hosts must be configured in a private network.
If transitioned clustered Data ONTAP LUNs are visible to the source host during test mode, you might experience unexpected service disruptions on the source host.
You must maintain hardware parity between the test host and the source host and you must perform the following steps on the test host:
Your clustered Data ONTAP LUNs are in read/write mode during testing. They convert to read-only mode when testing is complete and you are preparing for the cutover phase.
After you complete your test, plan time to shut down the source host connected to your controllers running Data ONTAP operating in 7-Mode. When you click Complete Transition, your source 7-Mode volumes and LUNs go offline and the transitioned clustered Data ONTAP LUNs become read/write.