More efficient high availability and resource utilization through manageability

Putting it all together—An example

Integrating the building blocks of the HP Virtual Server Environment provides a seamless solution for

high availability, disaster tolerance, workload management, and Instant Capacity. Consider an

environment with two data centers. Each data center has two HP 9000 rp7420 Servers connected to

an HP StorageWorks XP-series disk array. Each server has two nPartitions. Thus, the environment has

a total of eight nodes. Data is replicated from the first data center to the second one through

Metrocluster with Continuous Access XP (Metrocluster CA XP). The first data center is located in San

Francisco, CA and is running mission-critical SAP applications. Fifty miles away in San Jose, CA,

there is a second data center with systems running less critical applications. The systems in the second

data center are also configured to run the mission-critical applications if necessary. The data centers

are clustered together and managed through Serviceguard and Metrocluster. Upon failure,

applications in the first data center are configured to automatically migrate among systems in the

same data center if there is a system in that data center available to run the application and to

automatically migrate to the remote data center if no local system is available (such as the loss of the

entire data center).