Hi,
In thin provisioning the system allows to provision storage beyond the physical capacity of the available storage. In case of total capacity of 10TB(10x 1TB drives) you can even create 20*1TB thin provisioned volumes. It is possible with logical volume manager.
Volume groups (VGs) can be resized online by absorbing new physical volumes (PVs) or ejecting existing ones. So if the volume group of 10TB is created, the maximum capacity it can provision is 10 TB. The mapping is 1:1 to the physical address space.
So if we try to thin provision a volume group it will fail.
Refer http://www.tecmint.com/setup-thin-provisioning-volumes-in-lvm/
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