I have an existing thinpool on ourr vmax - R5-15K. Apparently, it's using disk groups 2 and 5. I have an available disk group 3 with 40 drives that i wanted to added to this thin pool (R5-15K) but I receive the following error trying to create the data devices and add them to  the pool:

The selected disk group doesn't match the selected pool's technology.the available disk groups for  the selected pool are 2,5.

I'm not sure how to rectify this, if it's possible.