How to exclude certain disks from BMR backup [Not at PTR but while backup]?

  Is this possible? A lot of my bmr sparc clients are failing with code 1 due to prtvtoc failing on certain external disks. In a particular case of few clients it happened to be that they use EMC storage and the disks the prtvtoc fails are EMC gatekeeper disks which OS doesnt have control on.

Is it possible to exclude this type of disks and finish the BMR backup?

Thanks
Naveen