Which statement about SmartThin is NOT true?

• A. LUN whose capacity is greater than the maximum physical available capacity of the storage pool cannot be created.
• B. SmartThin implements on-demand allocation.
• C. SmartThin does not allocate all space in advance. It presents a virtual storage space larger than the physical storage space.
• D. SmartThin virtualizes storage resources.

Answer: (A)

SmartThin relies on thin provisioning to present more virtual storage than is currently physically allocated. It allocates actual blocks only when data is written, so you can create a LUN whose configured size is larger than the pool’s currently free space. The pool’s total physical capacity is the ceiling, but creation of a larger-than-free-space LUN is allowed because allocation happens on demand. That’s why the statement claiming such a LUN cannot be created is not true. The other points align with how SmartThin works: it implements on-demand allocation, does not allocate all space upfront, and it virtualizes storage resources.