public boolean createRedundantBucketForRegion(InternalDistributedMember target, int bucketId) {
    return getLeaderRegion().getRedundancyProvider().createBackupBucketOnMember(bucketId, target,
        isRebalance, replaceOfflineData, null, true);
  }
Create a redundant bucket on the target member

@param target the member on which to create the redundant bucket
@param bucketId the identifier of the bucket
@return true if the redundant bucket was created
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/PartitionedRegionRebalanceOp.java