You create a 150 GB thick-provisioned volume. In that volume, you create a 50 GB LUN with space-reserve enabled. You create another 50 GB LUN with space-reserve disabled. Before any data is written…

This is incorrect because one of the LUNs has space-reserve enabled, which immediately consumes space from the volume, reducing the available amount.

The 150 GB thick-provisioned volume immediately allocates its full size. The 50 GB LUN with space-reserve enabled consumes 50 GB of that volume space upfront, even before data is written. The other 50 GB LUN with space-reserve disabled is thin-provisioned, meaning it does not reserve space from the volume until data is actually written to it. Therefore, 150 GB - 50 GB = 100 GB remains available in the volume for additional LUNs.

This is incorrect as it implies more space is reserved than technically necessary given that only one LUN has space-reserve enabled.

This is incorrect as it implies a much larger portion of the volume is reserved upfront, which is not true for the thin-provisioned LUN.