Backup plan for MySQL NDB cluster databse not innoDB
You should go through some more articles regarding cluster to make better understanding.
I have put here the steps of taking cluster backup and restore with 4 data node scenario.  

1.MySQL Cluster Native Backup Tool (ONLINE Backup) and Restore

1.1 

ndb_mgm&gt; START BACKUP &lt;Option&gt;

&lt;Option&gt;:NOWAIT, WAIT STARTED, WAIT COMPLETED


NOWAIT - This returns a response to the display immediately and             begins the backup without waiting for responses from the data nodes.

WAIT STARTED - This returns a response to the display only when a response is returned from all the data nodes saying the backup has begun.

WAIT COMPLETED - This returns a response to the display only when a response is returned from all the data nodes saying that the backups have been completed successfully.
In most cases, using the START BACKUP WAIT COMPLETED is the best option:            

 ndb_mgm&gt; START BACKUP WAIT COMPLETED


Files that are created on Disk

1.1.1   .ctl - This group of files (labeled backup-..ctl) is          the metadata from the cluster for each data node.

1.1.2   .log - This group of files (labeled backup-..log)             contain the UNDO log files to keep the backup consistent and to ensure that no locks are needed during the backup process.

1.1.3   .Data - This group of files (labeled backup--                    ..Data) contains the data for the entire system.                 

1.2 To interrupt the backup in progress.

If the abort was successful, a message will be displayed stating this and issuing an error (which is to be expected).If a backup id is entered, but there is no backup occurring that is associated with that id, there is a response but without an error being issued:

ndb_mgm&gt; ABORT BACKUP &lt;backup id&gt; 
ndb_mgm&gt; ABORT BACKUP 6


1.3  ndb_mgm&gt; &lt;node_id&gt; REPORT BackupStatus 

This command provides a status report on a cluster backup at anytime during the backup for node_id, or for all data nodes using ALL. 

1.4  Restoring cluster Backup 

1.4.1 Shutdown the cluster and then Restart Management Node 

1.4.1.1  

 ndb_mgm&gt;SHUTDOWN


1.4.1.2   

/usr/local/mysql/bin/ndb_mgmd 


1.4.2   Start and empty the data nodes:- 

Prior to restoring a backup, it is important to start and empty the data nodes.This is accomplished by starting each data node with the --initial option.   

./ndbd  --initial


1.4.3   Restore the Cluster Backup

1.4.3.1 ndb_mgm&gt; ENTER SINGLE USER MODE [Node-Id of First Free Slot]

1.4.3.2 In an operating system console, enter the following                     command from the /var/lib/mysqlcluster/BACKUP/BACKUP-1/ directory:

ndb_restore -m -r -b 1 -n 2   /* -- For First DataNode*/
ndb_restore -r -b 1 -n 3      /*-- For Second DataNode */


1.4.3.3 

ndb_mgm&gt; EXIT SINGLE USER MODE


2. MySQL Cluster Backup through MySQLDump Utility

2.1 

shell&gt; mysqldump -u root -p --lock-tables Dd_Name &gt; Db_Name-backup.sql


2.2 Restoring mysqldump Files 

shell&gt; mysql -u root -p &lt; Db_Name-backup.sql