I had checked manually ... $backupclient = i was having 4 VMs which needed consolidation.These 4 VMs were running from snapshot disks (-0000**.vmdk) and these 4 VMs base disks were mounted on VMs in $bkpserver .
Note:-
If i run $backupclient | get-harddisk ..then it returns -0000**.vmdk disks
In script ..i want check base disks of VMs in $backupclient which are attached to $bkpserver and then remove these base disks