Hello duahimanshu816, You can’t use the free space for systems that are not part of Vxrail.
Hello Experts, thanks in advance. please we have 26 node stretch cluster, total total capacity of the cluster is 170 TB and free space is 150 TB. question is:- can we use the free space as external storage for other host (out side vxrail cluster)??  
Can we use Vxrail Cluster as external Storage!!!