3.7.0 HP StorageWorks HP Scalable NAS File Serving Software administration guide - HP Scalable NAS 3.7 for Linux (AG513-96002, October 2009)

9 Configure FS Option for Linux
HP Scalable NAS and FS Option for Linux provide scalability and high availability
for the Network File System (NFS), which is commonly used on UNIX and Linux
systems to share files remotely.
Overview
FS Option concepts and definitions
FS Option uses and manages the following objects to provide scalable and highly
available file service across the cluster: Export Groups, export records, and Virtual
NFS Services.
Export Groups
An Export Group is equivalent in form and function to the /etc/exports file of a
traditional NFS server. However, unlike a traditional NFS server, FS Option supports
multiple Export Groups (the equivalent of multiple independent /etc/exports files)
on a single node.
An Export Group is composed of a name (which must be unique among all other
Export Groups in the cluster), a list of cluster nodes that will participate in the NFS
service for the exports defined by this Export Group, and a list of Export Records
describing the filesystems shared via NFS by the nodes listed in the Export Group.
An Export Group created on one node of the cluster is immediately available to all
cluster nodes defined in the Export Group.
High-availability monitors are provided to watch the health of the NFS service and
vital FS Option processes and to check whether the exported PSFS filesystems are
mounted. These monitors can initiate failover actions when the monitor probe reports
a failure.
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