HP ProLiant DL585 G2 Storage-Server - Manual (Page 111)

• In a clustered deployment, administer user name mapping on a computer that belongs to a
trusted domain.
If NFS administration tasks are performed on a computer that belongs to a domain that is not trusted
by the domain of the cluster, the changes are not properly replicated among the nodes in the cluster.
• In a clustered deployment, if PCNFS password and group files are being used to provide user and
group information, these files must be located on each node of the system.
Example: If the password and group files are located at c:\maps on node 1, then they must also
be at c:\maps on node 2. The contents of the password and group files must be the same on both
nodes as well.
These password and group files on each server node must be updated periodically to maintain
consistency and prevent users or groups from being inadvertently squashed.
Non cluster aware file sharing protocols
Services for Macintosh (SFM), File and Print Services for NetWare, HTTP file sharing protocols are not
cluster aware and will experience service interruption if installed on a clustered resource during failover
events of the resource. Service interruptions will be similar to those experienced during a server outage.
Data that has not been saved to disk prior to the outage will experience data loss. In the case of SFM,
it is not supported because SFM maintains state information in memory. Specifically, the Macintosh
volume index is located in paged pool memory. Using SFM in clustered mode is not supported and
may result in data loss similar in nature to a downed server should the resource it is based on fails
over to the opposing node.
Adding new storage to a cluster
Present the new storage to one node in the cluster. This can be accomplished through selective storage
presentation or through SAN zoning.
The tasks described below are used to add storage to a cluster. See the online help for clustering for
additional details.
Creating physical disk resources
A physical disk resource must reside within a cluster group. An existing cluster group can be used or a
new cluster group must be created. For information on creating disk resources, see the cluster online
help topic Physical Disk resource type.
NOTE:
•
Physical disk resources usually do not have any dependencies set.
• In multi-node clusters it is necessary to specify the node to move the group to. When a cluster group
is moved to another node, all resources in that group are moved.
• When a physical disk resource is owned by a node, the disk appears as an unknown, unreadable
disk to all other cluster nodes. This is a normal condition. When the physical disk resource moves to
another node, the disk resource then becomes readable.
Creating file share resources
To create a file share resource, see two clustering online help topics:
• Create a cluster-managed file share
• Using a server cluster with large numbers of file shares
HP ProLiant Storage Server 111