NOTE:

AppleTalk is not supported on clustered disk resources. AppleTalk requires local memory for volume indexing. On failover events, the memory map is lost and data corruption can occur.

Cluster groups and resources, including file shares

The Failover Cluster Management tool (Start > Administrative Tools > Failover Cluster Management) provides complete online help for all cluster administration activities.

Cluster resources include administrative types of resources as well as file shares. The following sections include overview and planning issues for cluster groups, cluster resources, and clustered file shares.

Creating and managing these resources and groups must be managed through Failover Cluster Management.

Cluster group overview

A default cluster group is automatically created when the cluster is first created. This default cluster group contains an Internet Protocol (IP) Address resource, a Network Name resource, and the Quorum disk resource. When the new cluster is created, the (IP) address and the cluster name that were specified during setup are set up as the IP address and network name of this default cluster group.

CAUTION:

Do not delete or rename the Cluster Group or IP Address. Doing so results in losing the cluster and requires reinstallation of the cluster.

When creating groups, the administrator's first priority is to gain an understanding of how to manage the groups and their resources. Administrators may choose to create a resource group and a virtual server for each node that will contain all resources owned by that node, or the administrator may choose to create a resource group and virtual server for each physical disk resource. Additionally, the administrator should try to balance the load of the groups and their resources on the cluster between the nodes.

Node-based cluster groups

Creating one resource group and one virtual server for each node facilitates group and resource administration. This setup allows administrators to include all file share resources under one group. Clients access all of the resources owned by one node through a virtual server name.

In node-based cluster groups, each group has its own network name and IP address. The administrator decides on which node to place each physical disk resource. This configuration provides a very coarse level of granularity. All resources within a group must remain on the same node. Only two IP addresses and network names are required. This configuration creates less overhead for resource and network administration. A possible disadvantage of this approach is that the resource groups can potentially grow large when many file shares are created.

P4000 G2 Unified NAS Gateway User Guide 43

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HP P4000 G2 manual Cluster groups and resources, including file shares, Cluster group overview, Node-based cluster groups