The Delete Node Group (DLTNODGRP) command deletes a previously created node group.
This command does not affect any files that were created using the node group.
DLTNODGRP NODGRP(LIB1/GROUP1)
Even though the deletion of the node group does not affect files that were created using that node group, it is not recommended that you delete node groups after using them. As soon as the node group is deleted, you can no longer use the DSPNODGRP command to display the nodes and the partitioning scheme. However, you can use the Display File Description (DSPFD) command and specify TYPE(*NODGRP) to see the node group associated with a particular file.