# File lib/fog/aws/models/elasticache/cluster.rb, line 42
        def save
          requires :id

          parameter_group     ||= Hash.new
          notification_config ||= Hash.new

          connection.create_cache_cluster(
            id, {
              :node_type                    => node_type,
              :security_group_names         => security_groups,
              :num_nodes                    => num_nodes,
              :auto_minor_version_upgrade   => auto_upgrade,
              :engine                       => engine,
              :engine_version               => engine_version,
              :notification_topic_arn       => (notification_config['TopicArn']).strip,
              :port                         => port,
              :preferred_availablility_zone => zone,
              :preferred_maintenance_window => maintenance_window,
              :parameter_group_name => parameter_group['CacheParameterGroupName'],
            }
          )
        end