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Using MSCS 63
Resource Parameters
The Parameters tab in the Properties dialog box is available for most resources. Table 5-3 lists
each resource and its configurable parameters.
Quorum Disk (Quorum Resource)
The quorum resource is a common resource in the cluster that is accessible by all of the cluster
nodes. Normally a physical disk on the shared storage, the quorum resource maintains data
integrity, cluster unity, and cluster operations—such as forming or joining a cluster—by
performing the following tasks:
•
Enables a single node to gain and defend its physical control of the quorum resource
—
When the cluster is formed or when the cluster nodes fail to communicate, the quorum
resource guarantees that only one set of active, communicating nodes is allowed to form
a cluster.
•
Maintains cluster unity
—
The quorum resource allows cluster nodes that can communicate
with the node containing the quorum resource to remain in the cluster. If a cluster node fails
for any reason and the cluster node containing the quorum resource is unable to
communicate with the remaining nodes in the cluster, MSCS automatically shuts down the
node that does not control the quorum resource.
•
Stores the most current version of the cluster configuration database and state
data
—
If a cluster node fails, the configuration database helps the cluster recover a failed
resource or recreates the cluster in its current configuration.
The only type of resource supported by the Cluster Service that can act as a quorum resource is
the physical disk resource. However, developers can create their own quorum disk types for any
resources that meet the arbitration and storage requirements.
Table 5-3. Resources and Configurable Parameters
Resource Configurable Parameters
File share Share permissions and number of simultaneous users
Share name (clients will detect the name in their browse or explore lists)
Share comment
Shared file path
IP address IP address
Subnet mask
Network parameters for the IP address resource (specify the correct cluster
network)
Network name System name
Physical disk Drive for the physical disk resource (the drive cannot be changed after the
resource is created)
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