Yes - this is what we call oversubscription and you can do that with thin devices. Once allocated, you will want to monitor the allocated capacity of the thin device to ensure that it stays under 1TB of allocated space in your example because your pool only has 1TB of physical capacity on the data devs that back it.
Hi, for example I have a thin pool capacity of 1 TB and can I create a thin device capacity of 1.5 TB and allocate it to a server ?
Can size of thin device more than size of thin pool ?