Consolidation Versus Virtualization
Sometimes the terms consolidation and virtualization are used interchangeably because both achieve the same end, but by different means. Virtualization provides a way to retain a function (for example, two middle-tier servers in a test environment) while optimizing the underlying hardware. Consolidation is a process that completely removes the function and the underlying hardware.
Virtualization in Mainframes
Although new to some, virtualization has been part of the IT fabric for many decades. When first introduced in mainframes, it enabled IT managers to:
More effectively manage computing workloads
Provide a flexible and reliable testing infrastructure without having to fully duplicate the production environment
Create elegant ways to optimize uptime by reducing outages due to changes in the physical infrastructure
Create a separation of workloads that does not compromise security or inject new capital expenditures
Recent advancements in open source virtualization have created an opportunity to optimize the Oracle On Demand Managed Services Grid and lay a foundation that could materially enhance Oracle’s Managed Services. Many such benefits mirror those afforded by the initial mainframe virtualization.
Oracle On Demand Server Virtualization Page 4