592a819b_ere_PowerCLI_Cmdlets_Reference__Description
[Name] RelatedObject [Type] DatastoreRelatedObjectBase[] [Required?] false [Pipeline Input] true (ByValue) [Description] 
Specifies objects to retrieve one or more Datastore objects that are related to them. This parameter accepts vSphere VirtualMachine, VMHost, Datacenter, DatastoreCluster, and Folder objects, and vCloud Datastore objects.
Get-Datastore - vSphere PowerCLI Cmdlets Reference
Description