3.7.0 HP StorageWorks HP Scalable NAS File Serving Software provisioning guide for Oracle HP Scalable NAS (AG513-96013, October 2009)

Suppose, instead of Direct NFS, we introduce only HP Scalable NAS to the scenario
in Figure 8. With the NFS cluster, the Oracle Server uses a Virtual NFS service to
mount storage rather than the physical IP address of the actual NFS server (shown
with a green line). Should a server fail or should the NAS administrator need to move
the service, the service is picked up by the backup server (shown with dotted lines)
transparently. The database will not go down. However, we can still lose the database
should the network fail or should the Oracle server crash. It is possible to create some
network redundancy with bonded NIC cards. It is also possible to spread the I/O
load across multiple mount points within the same filesystem, but this would require
knowledge of the workload down to the datafile level and that might change over
time.
Figure 10 HP Scalable NAS introduced without Direct NFS
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