Thin provisioning allows you to allocate a logical disk the same way, except that the storage reports actual usage of the bits in that disk rather than the fully allocated capacity. So a newly allocated 1TB disk uses zero actual disk space.

Why is thin provisioning used?

What are the advantages of thin provisioning? Thin provisioning uses disk space more efficiently than thick provisioning. It enables the squeezing of more users onto a particular volume of physical storage, while also avoiding excess capacity.

How does thin provisioning help in utilization of storage?

Thin provisioning can aid storage capacity management by allowing storage professionals to optimise their purchases of disk space by allowing a LUN volume to be provisioned without requiring the physical disk space to be present until it is ready to be written to.