High availability requires:
Two homogenous, network systems with similar configurations in terms of resources such as CPU, memory, and so on.
The high availability package and the associated hardware.
Devices that are accessible to both nodes.
A logical volume manager (LVM) to maintain unique device path names across the cluster nodes.
Volumes or disk suite objects on the multihost disks.
Third-party vendor mirroring for media failure protection.
Logical hostname or floating IP address which can be bound to the primary or secondary node. In a symmetric configuration, you need two logical host names, each corresponding to a primary companion.
For more information about requirements for running Sun Cluster 3.0, see the Sun Cluster 3.0 documentation.
See your hardware and operating system documentation for information about installing platform-specific high availability software.
