private Set<InternalDistributedMember> getBuddyMembersInZone(
      InternalDistributedMember acceptedMember, Collection<InternalDistributedMember> allStores) {
    DistributionManager dm = partitionedRegion.getDistributionManager();
    Set<InternalDistributedMember> buddies = dm.getMembersInSameZone(acceptedMember);
    buddies.retainAll(allStores);
    return buddies;
  }
Get buddy data stores on the same Host as the accepted member

@return set of members on the same host, not including accepted member
@since GemFire 5.9
geode-core/src/main/java/org/apache/geode/internal/cache/PRHARedundancyProvider.java