CMMVC6972E The command cannot be initiated because the maximum number of extents for an MDisk would be exceeded.
Explanation
Each MDisk has a limited number of extents, which
varies according to the extent size set by the mdiskgrp, this limit
would be exceeded by this command.
User response
Create a different pool with a larger extent size by using mkmdiskgrp. Then, retry
the command by using mdiskgrp.
Ensure that you are familiar with the maximum configurations of the SAN Volume Controller. Search for the term "configuration limits and restrictions" in the Search support and downloads search box at the www.ibm.com/support website. The relationship between extent size and the maximum MDisk capacity is shown in the Extents table.