Introduction of node groups with DB2^® Multisystem

To enable database files to be visible across a set of iSeries™ servers, you must first define the group of systems (node group) that you want the files on.

A node group can have 2 to 32 nodes defined for it. The number of nodes that is defined for the node group determines the number of systems across which the database file is created. The local system must be one of the systems that is specified in the node group. When the system creates the node group, the system assigns a number, starting with number 1, to each node.

• How node groups work with DB2 Multisystem
  A node group is a system object (*NODGRP), which is stored on the system on which it was created.
• Tasks to complete before using the node group commands with DB2 Multisystem
  Before using the Create Node Group (CRTNODGRP) command or any of the node group commands, you must ensure that the distributed relational database network you are using has been properly set up.
• Create Node Group (CRTNODGRP) command
  This section uses two CL command examples to show how to create a node group by using the Create Node Group (CRTNODGRP) command.
• Display Node Group (DSPNODGRP) command
  The Display Node Group (DSPNODGRP) command displays the nodes (systems) in a node group.
• Change Node Group Attributes (CHGNODGRPA) command
  The Change Node Group Attributes (CHGNODGRPA) command changes the data partitioning attributes for a node group.
• Delete Node Group (DLTNODGRP) command
  The Delete Node Group (DLTNODGRP) command deletes a previously created node group.