HP B6960-90078 - Manual (Page 644)

Integrations with Other Applications
Cluster Integrations with Data Protector
Chapter 13 614
Figure 13-1 A Typical Cluster
• Cluster nodes (two or more)
• Local dis ks
• Shared disks (shared between nodes)
Cluster Nodes Cluster nodes are computers that compose a cluster. They are
physically connected to one or more shared disks.
Shared Disks The shared disks volumes (MSCS) or shared volume groups
(MC/SG) or shared pools (Novell NetWare Cluster) contain
mission-critical application data as well as specific cluster data needed to
run the cluster. In MSCS and Novell NetWare clusters, a shared
disk/pool is exclusively active on only one cluster node at a time. In
MC/SG clusters, the other node can activate the disk in the read only
mode.
Cluster Network Cluster network is a private network that connects all cluster nodes. It
transfers the internal cluster data called heartbeat of the cluster. The
heartbeat is a data packet with a time stamp that is distributed among