This object represents a bitmap that tracks which zones (identified by zone indices 12289 to 14336) are members of a particular zone set on a specific VSAN (Virtual Storage Area Network). Each bit in the bitmap corresponds to a zone: a value of 1 means that zone is part of the zone set, while 0 means it is not. Network operators use this to manage storage access policies in Fibre Channel networks by defining which storage devices can communicate with specific initiators within a zone.