They have mostly the same features, so in this case the V2 doesn't have much significance.
From the User Guide at http://www.intel.com/support/motherboards/server/mfsys25v2/sb/CS-032891.htm, the closest thing I see is:
Expand Expands the size of an existing virtual drive using any unallocated
space within the storage pool in which the virtual drive resides. Note:
This function is only available when the Intel® Modular Server
Storage Management Pack feature is activated.