NDB Cluster Configuration Files ENGINE NDBCLUSTER; This logfile group is created when the data nodes are started with  --initial . Resources for the initial log file group are added to the global memory pool along with those indicated by the value of  SharedGlobalMemory . This parameter, if used, should always be set in the  [ndbd default]  section of the  config.ini file. The behavior of an NDB Cluster when different values are set on different data nodes is not defined. This parameter can be used to specify an NDB Cluster Disk Data tablespace that is created when performing an initial start of the cluster.  InitialTablespace  is specified as shown here: InitialTablespace = [name= name ;] [extent_size= size ;]  file-specification-list The  name  of the tablespace is optional and defaults to  DEFAULT-TS . The  extent_size  is also optional; it defaults to  1M . The  file-specification-list  uses the same syntax as shown with the  InitialLogfileGroup  parameter, the only difference being that each  file-specification used with  InitialTablespace  corresponds to a data file. At least one must be specified in the file-specification-list . Data files are placed according to any values that have been set for FileSystemPath ,  FileSystemPathDD , and  FileSystemPathDataFiles , just as if they had been created as the result of a  CREATE TABLESPACE  or  ALTER TABLESPACE  statement. For example, consider the following line specifying  InitialTablespace  in the  [ndbd default] section of the  config.ini  file (as with  InitialLogfileGroup , this parameter should always be set in the  [ndbd default]  section, as the behavior of an NDB Cluster when different values are set on different data nodes is not defined): InitialTablespace = name=TS1; extent_size=8M; data1.dat:2G; data2.dat:4G This is equivalent to the following SQL statements: This tablespace is created when the data nodes are started with  --initial , and can be used whenever creating NDB Cluster Disk Data tables thereafter. 4145 • Disk Data latency parameters.   The two parameters listed here can be used to improve handling of latency issues with NDB Cluster Disk Data tables. • InitialTablespace Version (or later) NDB 8.0.13 Type or units string Default [see documentation] Range ... Restart Type S (NDB 8.0.13) CREATE TABLESPACE TS1 ADD DATAFILE ’data1.dat’ EXTENT_SIZE 8M INITIAL_SIZE 2G ENGINE NDBCLUSTER; ALTER TABLESPACE TS1 ADD DATAFILE ’data2.dat’ INITIAL_SIZE 4G ENGINE NDBCLUSTER;