Orphaned capacity is defined by configuration or by performance. Storage orphaned by configuration occurs when storage is allocated to a host, but configuration errors result in the host not able to access the storage. Orphaned by performance results when the storage is correctly configured to be accessed by a host, but there is no storage traffic.
You can identify orphaned storage using Cloud Insights. Create a query to identify the volumes or <what else look at Kurt’s blog> that have not reported I/O data over an extended period of time.
+The system displays volumes that have had no I/O for 'some period of time"