content_image/1008124.jpg
Node testnode3  is again registered on hdisk3 and hdisk4 when it has successfully rejoins testnode4 to form a cluster. You must perform a restart of cluster services on testnode3. 

## 9.4 Changes in split and merge policies in PowerHA V7.2.1 

This section provides a list of changes that are associated with the split and merge policies that are introduced in PowerHA V7.2.1 for AIX V7.2.1: 

GLYPH<SM590000> Split and merge policies are configurable for all cluster types when AIX is at Version V7.2.1, as summarized in Table 9-1. 

<img src='content_image/1008124.jpg'>

GLYPH<SM590000> Split and merge policies are configured as a whole instead of separately. These options can also vary a bit based on the exact AIX dependency. 

GLYPH<SM590000> The action plan for the split and merge policy is configurable. 

GLYPH<SM590000> An entry is added to the Problem Determination Tools  menu for starting cluster services on a merged node after a cluster split. 

GLYPH<SM590000> Changes were added to clmgr  for configuring the split and merge policy. 

