Node distribution policy

You can use node distribution policy for cluster startup to ensure that PowerHA® SystemMirror® activates only one resource group that has this policy enabled on each node. This policy helps you distribute your CPU-intensive applications on different nodes.

The facts about node distribution policy are:

• If two resource groups with this policy enabled are offline at the time when a particular node joins, only one of the two resource groups is acquired on a node. PowerHA SystemMirror gives preference to the resource group that has fewer nodes in the node list and then sorts the list of resource groups based on Resource group ID’s.
• If one of the resource groups is a parent resource group (has a child resource group), PowerHA SystemMirror gives preference to the parent resource group, and it is activated on a node.
• To ensure that your resource groups are distributed not only at startup but also for recovery events (fallover and fallback), use location dependencies.