Every high availability group has an associated policy.
The high availability manager uses this policy to determine which
members of a high availability group to put in the active state.
Before you begin
Before you select a policy for a high availability group,
you should review the following topics:
You should also know:
- The name of the core group that you want to associate with the
new policy.
- The name of the high availability group that you want this policy
to control.
- The function, such as transaction log recovery or messaging engine,
that is associated with this high availability group.
- The policy types, such as One of N or Static, that this function
supports.
- The type of policy you want to create.
- The policy settings, such as failback, and preferred servers only,
that you want to configure for this policy.
About this task
You have multiple policies defined for a high availability
group, and you want to specify which of these policies the high availability
manager uses to govern the group.
To select a policy for a high
availability group:
Procedure
- In the administrative console, click core_group_name.
- Click the Runtime tab to determine both the name
of the high availability group, and the name of the policy that is
currently controlling the group. See Viewing high availability group information for more information on how
to perform this step. You must have at least one of the group members
running.
- Click the Configuration tab to determine the match
criteria defined in the current high availability group policy.
- Use the information you obtained in the previous steps
and update the match criteria for the policy you are selecting. The match criterion must contain all of the match criteria from
the original policy, and at least one additional attribute from the
name of the high availability group.
- Click OK and then click Review.
- Select Synchronize changes with nodes, and then
click Save.
Results
The high availability manager uses the new policy to govern
the designated high availability groups.