Device Sharing In Clusters; Static Drives; Direct Library Access - HP B6960-96035 Concepts Manual

Figure 55 Direct Library Access

Device sharing in clusters

Clustering, which is often used in combination with the SAN concept, is based on
sharing network resources (for example network names, disks, and tapes devices)
between nodes.
Cluster-aware applications can at any time run on any node in a cluster (they run on
virtual hosts). To perform a local backup of such an application, you need to configure
devices with virtual hostnames instead of real node names. Configure as many devices
for each physical device as you need, using the Lock Name device locking
mechanism. For details, see

Static drives

Static drives are devices that are configured on a real node in a cluster. They can
be used to back up data from systems with disks that are not shared. However, they
are not useful for backing up cluster-aware applications, because such application
can run on any node in the cluster.
180 Media management and devices
"Device locking" on page 177.