When you stop a replication, vSphere Replication does not delete the replica directory at the target datastore.
As a result, stale directories remain on VMFS and NFS target datastores, and unused namespaces remain on Virtual SAN and Virtual Volume target datastores. Because the maximum number of directories and namespaces on a datastore is limited, you must manually clean them up to free resources on the datastore.
Prerequisites
Verify that you know the name of the replication that was stopped and its target datastore.