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Configuring Resource Dependencies
Groups function properly only if resource dependencies are configured correctly. The Cluster
Service uses the dependencies list when bringing resources online and offline. For example, if a
group in which a physical disk and a file share are located is brought online, the physical disk
containing the file share must be brought online before the file share.
Table 5-2 shows resources and their dependencies. The resources in the right column must be
configured before you create the resource.
Setting Advanced Resource Properties
You can configure the advanced resource properties using the Advanced tab in the resource
Properties dialog box. Use the Advanced tab to have the Cluster Service perform the following
tasks:
• Restart a resource or allow the resource to fail.
– To restart the resource, select
Affect the group
(if applicable).
– To fail over the resource group to another cluster node when the resource fails, select
Affect the group
and then enter the appropriate values in
Threshold
and
Period
. If you
do not select
Affect the group
, the resource group will not fail over to the healthy
cluster node.
The
Threshold
value determines the number of attempts by the Cluster Service to restart the
resource before the resource fails over to a healthy cluster node.
The
Period
value assigns a time requirement for the
Threshold
value to restart the resource.
• Adjust the time parameters for
Looks Alive
(general check of the resource) or
Is Alive
(
detailed check of the resource
) to determine if the resource is in the online state.
• Select the default number for the resource type.
To apply the default number, select
Use resource type value
.
• Specify the time parameter for a resource in a pending state (
Online Pending
or
Offline
Pending
) to resolve its status before moving the resource to
Offline
or
Failed
status.
Table 5-2. Cluster Resources and Required Dependencies
Resource Required Dependencies
File share Network name (only if configured as a distributed file system [DFS] root)
IP address None
Network name IP address that corresponds to the network name
Physical disk None
se500wbk1.book Page 62 Thursday, June 16, 2005 4:19 PM