Oracle Audio Technologies E10898-02 manual Xen Technology, Oracle VM

Xen™ Technology

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administration costs, fewer computers can be used to achieve the same goal. Administration and physical setup is less time consuming and costly.

Isolation: Virtual machines run in sand-boxed environments. They cannot access each other, so if one virtual machine performs poorly, or crashes, it does not affect any other virtual machine.

Platform Uniformity: In a virtualized environment, a broad, heterogeneous array of hardware components is distilled into a uniform set of virtual devices presented to each guest operating system. This reduces the impact across the IT organization: from support, to documentation, to tools engineering.

Legacy Support: With traditional bare-metal operating system installations, when the hardware vendor replaces a component of a system, the operating system vendor is required to make a corresponding change to enable the new hardware (for example, an ethernet card). As an operating system ages, the operating system vendor may no longer provide hardware enabling updates. In a virtualized operating system, the hardware remains constant for as long as the virtual environment is in place, regardless of any changes occurring in the real hardware, including full replacement.

1.3 Xen™ Technology

The Xen hypervisor is a small, lightweight, software virtual machine monitor, for

x86-compatible computers. The Xen hypervisor securely executes multiple virtual machines on one physical system. Each virtual machine has its own guest operating system with almost native performance. The Xen hypervisor was originally created by researchers at Cambridge University, and derived from work done on the Linux kernel.

The Xen hypervisor has been improved and included with Oracle VM Server.

1.4 Oracle VM

Oracle VM is a platform that provides a fully equipped environment for better leveraging the benefits of virtualization technology. Oracle VM enables you to deploy operating systems and application software within a supported virtualization environment. The components of Oracle VM are:

■Oracle VM Manager: Provides the user interface, which is a standard ADF (Application Development Framework) web application, to manage Oracle VM Servers, virtual machines, and resources. Use Oracle VM Manager to:

–Create virtual machines from installation media or from a virtual machine template

–Delete virtual machines

–Power off virtual machines

–Upload virtual machines

–Deploy virtual machines

–Perform live migration of virtual machines

–Import and manage ISOs

–Create and manage virtual machine templates

–Create and manage sharable hard disks

1-2Oracle VM Server User’s Guide