Installing NDB Cluster on Windows As on other platforms, the NDB Cluster host computer running an SQL node must have installed on it a MySQL Server binary ( mysqld.exe ). You should also have the MySQL client ( mysql.exe ) on this host. For management nodes and data nodes, it is not necessary to install the MySQL Server binary; however, each management node requires the management server daemon ( ndb_mgmd.exe ); each data node requires the data node daemon ( ndbd.exe  or  ndbmtd.exe ). For this example, we refer to  ndbd.exe as the data node executable, but you can install  ndbmtd.exe , the multithreaded version of this program, instead, in exactly the same way. You should also install the management client ( ndb_mgm.exe ) on the management server host. This section covers the steps necessary to install the correct Windows binaries for each type of NDB Cluster node. Note As with other Windows programs, NDB Cluster executables are named with the .exe  file extension. However, it is not necessary to include the  .exe  extension when invoking these programs from the command line. Therefore, we often simply refer to these programs in this documentation as  mysqld ,  mysql ,  ndb_mgmd , and so on. You should understand that, whether we refer (for example) to  mysqld  or mysqld.exe , either name means the same thing (the MySQL Server program). For setting up an NDB Cluster using Oracles’s  no-install  binaries, the first step in the installation process is to download the latest NDB Cluster Windows ZIP binary archive from https://dev.mysql.com/ downloads/cluster/. This archive has a filename of the  mysql-cluster-gpl- ver -win arch .zip , where  ver  is the  NDB  storage engine version (such as  8.0.25 ), and  arch  is the architecture ( 32  for 32- bit binaries, and  64  for 64-bit binaries). For example, the NDB Cluster 8.0.25 archive for 64-bit Windows systems is named  mysql-cluster-gpl-8.0.25-win64.zip . You can run 32-bit NDB Cluster binaries on both 32-bit and 64-bit versions of Windows; however, 64-bit NDB Cluster binaries can be used only on 64-bit versions of Windows. If you are using a 32-bit version of Windows on a computer that has a 64-bit CPU, then you must use the 32-bit NDB Cluster binaries. To minimize the number of files that need to be downloaded from the Internet or copied between machines, we start with the computer where you intend to run the SQL node. SQL node.   We assume that you have placed a copy of the archive in the directory  C:\Documents and Settings\ username \My Documents\Downloads  on the computer having the IP address 198.51.100.20, where  username  is the name of the current user. (You can obtain this name using  ECHO %USERNAME%  on the command line.) To install and run NDB Cluster executables as Windows services, this user should be a member of the  Administrators  group. Extract all the files from the archive. The Extraction Wizard integrated with Windows Explorer is adequate for this task. (If you use a different archive program, be sure that it extracts all files and directories from the archive, and that it preserves the archive’s directory structure.) When you are asked for a destination directory, enter  C:\ , which causes the Extraction Wizard to extract the archive to the directory  C:\mysql- cluster-gpl- ver -win arch . Rename this directory to  C:\mysql . It is possible to install the NDB Cluster binaries to directories other than  C:\mysql\bin ; however, if you do so, you must modify the paths shown in this procedure accordingly. In particular, if the MySQL Server (SQL node) binary is installed to a location other than  C:\mysql  or  C:\Program Files\MySQL\MySQL Server 8.0 , or if the SQL node’s data directory is in a location other than  C:\mysql\data  or  C: \Program Files\MySQL\MySQL Server 8.0\data , extra configuration options must be used on the command line or added to the  my.ini  or  my.cnf  file when starting the SQL node. For more information about configuring a MySQL Server to run in a nonstandard location, see Section 2.3.4, “Installing MySQL on Microsoft Windows Using a  noinstall  ZIP Archive” . For a MySQL Server with NDB Cluster support to run as part of an NDB Cluster, it must be started with the options  --ndbcluster  and  --ndb-connectstring . While you can specify these options on the 3988