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.