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An Oracle White Paper November 2007 - page 7 / 9

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create “virtual” test grids where environments can rapidly be provisioned, tests can occur, and results can be cloned back into an existing system.

Capacity Management

Businesses can improve capacity management by creating a “capacity grid“ that consists of virtual machines. These virtual machines can be rapidly added to environments during different workload needs. The same capacity grid can be leveraged to alleviate discrete performance issues while the issue is being diagnosed.

DEPLOYMENT OF VIRTUALIZATION IN ON DEMAND

When applied to commodity servers, each type of virtualization has its own set of trade offs and benefits. Oracle is deploying what the industry defines as “hardware virtualization”. Oracle chose hardware virtualization because Oracle believes it is the most appropriate technology for the targeted infrastructure. A detailed description of each virtualization method is provided in Appendix A.

In the initial phase of the virtualization rollout, Oracle has opted to implement the virtualization layer solely in servers used for non-production workloads. Oracle has performed extensive tests to determine the impact of virtualization on specific service flows. Although it is possible to deploy many virtual machines on a single physical server, Oracle On Demand has defined configuration standards that specify that only a fixed number of virtual machines will be deployed on a single physical server. Each virtual machine is configured with its own dedicated processor and memory footprint. This deployment model allows proper separation across virtual machines.

From a security standpoint, Oracle On Demand has implemented explicit network virtualization to provide a security level equivalent to physically separated environments. Oracle Corporate Security has certified the deployment model chosen by Oracle On Demand.

SUMMARY

Oracle is providing this document to explain the key drivers around Oracle’s decision to deploy Oracle VM in the Oracle On Demand Managed Services Grid. It is Oracle’s goal to optimize Oracle infrastructure while delivering customer benefits. Oracle has taken many steps towards this goal, from testing to security validation.

Virtualization goes beyond optimizing infrastructure. Oracle views virtualization as a means to enhance Oracle On Demand services. And with the introduction of Oracle VM, Oracle is now the only software vendor to combine the benefits of server clustering and server virtualization technologies, delivering integrated clustering, virtualization, storage, and management for Grid Computing.

CONTACT ORACLE ON DEMAND

To find out more about how Oracle is implementing server virtualization, see the Server Virtualization FAQ or contact your On Demand Service Delivery Manager. To learn more about Oracle On Demand, visit oracle.com/ondemand.

Oracle On Demand Server Virtualization Page 7

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