Installing NDB Cluster on Windows 2. A global configuration file from which the management node can obtain configuration information governing the NDB Cluster as a whole. At a minimum, this file must contain a section for each node in the NDB Cluster, and the IP addresses or hostnames for the management node and all data nodes ( HostName  configuration parameter). It is also advisable to include the following additional information: •The IP address or hostname of any SQL nodes •The data memory and index memory allocated to each data node ( DataMemory  and  IndexMemory configuration parameters) •The number of fragment replicas, using the  NoOfReplicas  configuration parameter (see Section 23.1.2, “NDB Cluster Nodes, Node Groups, Fragment Replicas, and Partitions” ) •The directory where each data node stores it data and log file, and the directory where the management node keeps its log files (in both cases, the  DataDir  configuration parameter) 3990 DataDir=C:\mysql\bin\cluster-logs A single backslash character ( \ ) cannot be used when specifying directory paths in program options or configuration files used by NDB Cluster on Windows. Instead, you must either escape each backslash character with a second backslash ( \\ ), or replace the backslash with a forward slash character ( / ). For example, the following line from the  [ndb_mgmd]  section of an NDB Cluster  config.ini  file does not work: Save this file as the text file  C:\mysql\bin\config.ini . Create a new text file using a text editor such as Notepad, and input the following information: Important [ndbd default] # Options affecting ndbd processes on all data nodes: NoOfReplicas=2 # Number of fragment replicas DataDir=C:/mysql/cluster-data # Directory for each data node’s data files # Forward slashes used in directory path, # rather than backslashes. This is correct; # see  Important  note in text DataMemory=80M # Memory allocated to data storage IndexMemory=18M # Memory allocated to index storage # For DataMemory and IndexMemory, we have used the # default values. Since the "world" database takes up # only about 500KB, this should be more than enough for # this example Cluster setup. [ndb_mgmd] # Management process options: HostName=198.51.100.10 # Hostname or IP address of management node DataDir=C:/mysql/bin/cluster-logs # Directory for management node log files [ndbd] # Options for data node "A": # (one [ndbd] section per data node) HostName=198.51.100.30 # Hostname or IP address [ndbd] # Options for data node "B": HostName=198.51.100.40 # Hostname or IP address [mysqld] # SQL node options: HostName=198.51.100.20 # Hostname or IP address