ONTAP Tools for VMware vSphere: How to remove a Cluster from OTV Nondisruptively
Applies to
ONTAP Tools for VMware vSphere (OTV) 9.x
Description
When attempting to remove a storage system from OTV this can be seen:

This is expected behavior when datastores are mounted to ESXi hosts using OTV.
This prompt is one of the safety mechanism used by OTV to prevent users from accidentally removing storage when there are mounted datastores in VMware.
