After adding a new hard disk to a VM that is already configured with vSphere Replication, the target datastore is selected from a datastore cluster. However, after completing the reconfiguration task, a warning appears on the VM stating:
"Cannot find target datastore for disk 'null'."
vSphere Replication
When adding or relocating a disk, the specification only defines the Datastore Cluster. On the secondary site, SDRS is invoked to select a datastore within the cluster. However, the selected datastore does not persist on the primary site.
The issue is resolved in vSphere Replication 9.0.3 release