about ndb fs size

[Leo Cardia]

when i insert 44Mb of sqldump file to table using ndb cluster engine
the ndb fs size is very bigger than sql dump file

[root@test bin]# ls -alh cq.sql
-rw-r--r-- 1 root root 44M 24 Feb 22:00 cq.sql

[root@test bin]# du -sh /root/mysqldata/ndb_2_fs/
20M /root/mysqldata/ndb_2_fs/

[root@test bin]# ./mysql -u root -p nas < cq.sql
Enter password:
ERROR 1114 (HY000) at line 58138: The table 'zetyx_member_table' is full

[root@test bin]# du -sh /root/mysqldata/ndb_2_fs/
2.0G /root/mysqldata/ndb_2_fs/

( one server instance nodes / sql, ndb, mgm node at one)

so i checked about (22MB) 58138 record using over 500MB's memory
and using 2GB's filesystem

this is a normal?

we have 4GB of myisam database.
when putting 4GB db to ndb then we requires 800GB Memory, 4TB's hdd disk?

[NDBD DEFAULT]
NoOfReplicas=1
DataMemory=500M
IndexMemory=100M
NoOfFragmentLogFiles=4
MaxNoOfConcurrentOperations=5000
MaxNoOfSavedMessages=12
MaxNoOfAttributes=100
MaxNoOfOrderedIndexes=64