Backup and Restore of HACMP Cluster

HP OpenView Storage Data Protector
Backup and Restore of HACMP Cluster 4
As shown in the figure, an HACMP cluster is made up of the following physical
components:
• Nodes
• Shared external disk devices
• Networks
• Network interfaces
• Clients
Nodes: Nodes form the core of an HACMP cluster. A node is a processor that
runs AIX, the HACMP software, and the application software. In an HACMP
cluster, each node is identified by a unique name. A node may own a set of
resources - disks, volume groups, filesystems, networks, network addresses, and
applications.
Shared External Disk Devices: Each node has access to one or more shared
external disk devices. A shared external disk device is a disk physically
connected to multiple nodes. The shared disk stores mission-critical data, typically
mirrored or RAID-configured for data redundancy. A node in an HACMP cluster
must also have internal disks that store the operating system and application
binaries, but these disks are not shared.