Exceptions and known issues when transitioning SAN hosts to ONTAP
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You should be aware of certain exceptions and known issues when transitioning SAN hosts from Data ONTAP operating in 7-Mode to later versions of ONTAP.
For transitioning Hyper-Virtual Machine (VMs) with only VHD or VHDX file types, you can use storage live migration instead of the 7-Mode Transition Tool (7MTT).
For details about Hyper-V storage live migration, see the Microsoft documentation.
If you used the same igroup name on both nodes of the 7-Mode controller, the transition tool might fail to resolve the igroup conflict.
Bug ID 769715.