High availability group policies

Every high availability group has a policy associated with it. This policy is used to determine which members of a high availability group are active at a given time.

The policies that the high availability groups use are stored as part of the core group configuration. The same policy can be used by several different high availability groups, but all of the high availability groups to which it applies must be part of the same core group. Before modifying or deleting an IBM provided policy, see High availability group policy modification guidelines

Policy selection

• The high availability group name

• The policy match criteria

High availability group policy selection process provides more detail about how a policy is selected.

Policy settings

Some policy settings apply for all policy types while others only apply for specific policy types. Some of the policy settings also influence the overall behavior of a policy. Implications of high availability group policy settings describes the various settings, the applicable policy types, and how they influence policy behavior.

Policy enforcement

• A member joins or leaves that high availability group. A member leaves the group if the member fails.

• The state of a member of that high availability group changes. For example, if the state changes from idle to active, or from idle to disabled, the policy rules are reapplied.

Policy changes

The high availability manager dynamically detects policy configuration changes. Therefore, policy setting changes go into affect as soon as you save and propagate these changes. Server restarts are not required.

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