Storage Planning; Network Planning - HP ProLiant 300 Series Administration Manual

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Storage planning

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Network planning

• Protocol planning
Storage planning
For clustering, a storage unit (LUN) must be designated for the cluster and configured as a mirrorset.
This LUN is used for the Quorum disk. The Quorum disk is the shared storage used by the cluster nodes
to coordinate the internal cluster state.
One or more RAID arrays are dedicated to each cluster node for data storage. Each cluster node assumes
ownership of at least one physical disk resource. That owner node serves all shares within that physical
disks resource, until a failover condition occurs. When a failover occurs, the physical disk resource and
all associated shares transition over to the remaining nodes and remain there until the other node is
returned to service. Some types of shares are not cluster aware and are not available during a failover
condition. See the
To prepare a basic disk for use in a cluster, a cluster group for each basic disk should be created
to allow each resource to fail over separately. After the group is created, a physical disk resource is
created in each of the groups. Cluster groups can contain more than one physical disk depending on the
site-specific requirements. This physical disk resource is required for the basic disk to successfully work in
a cluster environment, protecting it from simultaneous access from each node.
NOTE:
The LUN underlying the basic disk should be presented to only one node of the cluster using selective
storage presentation SAN switch zoning, or having only one node online at all times until the physical
resource for the basic disk is established.
In preparing for the cluster installation:
• All software components listed in the SAN Connection Guide must be installed and the fiber
cables attached to the HBA(s) before the cluster installation is started.
• All shared disks, including the Quorum disk, must be accessible from both nodes. When testing
connectivity between server and LUN, only one server should be given access to the LUN at a
time or the non-testing server should be powered off.
• All shared disks must be configured as basic (not dynamic).
• All partitions on the disks must be formatted as NTFS.
Network planning
Clusters require more sophisticated networking arrangements than a stand alone storage server. For
example, because a cluster must be deployed into a domain environment, workgroups are not supported.
A Windows NT domain or Active Directory domain must be in place to contain the cluster names,
virtual server names, and user and group information. A cluster cannot be deployed into a non domain
environment.
All cluster deployments have at least seven network addresses and network names:
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Cluster Administration
"Protocol planning" section for additional information.