Ovm3 arch-tech-overview-459307 (1)

An Oracle White Paper
February 2013
Oracle VM 3:
Architecture and Technical Overview

Oracle VM 3: Architecture and Technical Overview
Introduction ....................................................................................... 2
Overview of Oracle VM 3 Concepts and Components....................... 4
Key Deployment Concepts ............................................................ 4
Oracle VM Manager .......................................................................... 5
Centralized Network and Storage Configuration and Management 6
Dynamic Resource Management................................................... 7
Unified Server Virtualization Management for x86 and SPARC ..... 8
Oracle VM Manager Command Line Interface (CLI) ...................... 9
Oracle VM Server for x86 .................................................................. 9
Hypervisor and Management Domain............................................ 9
Cluster File System – OCFS2...................................................... 10
Oracle VM Agent ......................................................................... 10
Types of Virtual Machines ........................................................... 10
Oracle VM Templates and Virtual Assemblies for Applications........ 12
Integration with Oracle Exalogic Elastic Cloud................................. 13
Full Stack Management with Oracle Enterprise Manager ................ 14
Conclusion ...................................................................................... 15
Appendix 1: References .................................................................. 16

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Introduction
Oracle VM is an enterprise-class server virtualization solution comprised of Oracle VM Server
for x86, Oracle VM Server for SPARC and Oracle VM Manager. Oracle VM 3 reflects Oracle’s
strategic commitment to deliver Application Driven Virtualization—Virtualization that makes the
entire enterprise software and hardware stack easier to deploy, manage, and support so IT
and business can be more agile. The paper here will focus on the Oracle VM Server for x86
and Oracle VM Manager; customers can visit Oracle Technology Network for additional
resources to learn more about Oracle VM Server for SPARC.
Oracle VM has been designed from the ground-up for excellent scalability, manageability, and
ease-of-use. Oracle VM 3 delivers significant enhancements to make it faster and easier to
rollout operating systems, enterprise application and middleware across your entire data
center—not just the Oracle software environment—while reducing costs and making your
datacenter or cloud environment highly available and secure.
Oracle VM Server for x86 is the most scalable x86 server virtualization solution in the market
today, and it has been tested to handle mission critical enterprise workloads with support for
up to 160 physical CPUs and 4 TB of memory. For virtual machines, Oracle VM 3 can support
up to 128 virtual CPUs and 2 TB memory per guest VM. Oracle VM supports industry standard
x86 operating systems and servers from Oracle and other leading vendors, and it supports a
broad range of network and storage devices, making it easy to integrate into your environment.
Oracle VM Manager provides an easy-use-centralized management environment for
configuring and operating your server, network, and storage infrastructure from a browser-
based interface (no Java client required), and it is accessible from just about anywhere. Users
leverage the virtualization manager for creating management policies, as well as cloning,
sharing, configuring, booting and migrating VMs. Beginning with Oracle VM Manager 3.2,
Oracle VM Manager offers unified virtualization management for SPARC servers running
Oracle VM Server for SPARC as well as x86-based servers running Oracle VM Server for x86.
Oracle VM helps customers improve server utilization, achieve higher availability and achieve
better performance while reducing costs.
Beyond the virtualization layer, Oracle offers solutions such as Oracle Virtual Assembly
Builder, Oracle VM Templates, Oracle Optimized Solution for Enterprise Cloud Infrastructure,

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and Oracle Exalogic Elastic Cloud that leverage Oracle VM and provide application-driven
virtualization. With these tools you can:
 Quickly configure and provision entire multi-tier enterprise applications onto virtualized and
cloud environments
 Deploy a fully configured software stack with preinstalled and preconfigured software images
 Save application deployment time by up to 98 percent
Oracle VM 3 supports easy integration with Oracle Enterprise Manager to provide
comprehensive management of the full hardware and software stack from applications to disk.
Management of the virtual environment can be handled with the many automated features of
Oracle VM Manager or a combination of Oracle VM Manager and Oracle Enterprise Manager
(see figure 1).
Figure 1. Oracle Full Stack Integration
Oracle VM Server for x86 is the only x86 server virtualization solution fully certified by Oracle,
allowing for the best support and highest availability for the complete software stack. Oracle
products such as Oracle Database, Oracle Fusion Middleware, and Oracle Applications are
officially certified when running in Oracle VM-based environments, and they have all gone
through vigorous real-world testing. Customers who obtain subscription service for Oracle VM
receive access to patches, fixes, and updates via Unbreakable Linux Network (ULN) and 24x7
global support.

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Overview of Oracle VM 3 Concepts and Components
For x86 servers, Oracle VM includes Oracle VM Manager and Oracle VM Server for x86.
 Oracle VM Manager controls the virtualization environment, creating and monitoring Oracle VM
servers and the virtual machines. Oracle VM Manager serves as the only administrative interface to
the Oracle VM servers, unlike previous-generations of Oracle VM that were jointly administered
from the management server, as well as locally from the command-line for each Oracle VM Server.
Oracle VM Manager 3 is an Oracle Fusion Middleware application, based on the Oracle Weblogic
Server application server and Oracle Database. The Oracle VM Manager runs on 64-bit Oracle
Linux 5.5 OS or later. For its management repository, Oracle VM Manager uses an Oracle Database
or MySQL Database as the management repository.
 Oracle VM Server for x86 installs directly on server hardware with x86 Intel or AMD processors and
does not require a host operating system. An Oracle VM Server is comprised of a hypervisor and
privileged domain (Dom0) that allows multiple domains or virtual machines (i.e. Linux, Solaris,
Windows, etc.) to run on one physical machine. The Dom0 runs a process called Oracle VM Agent.
The Oracle VM Agent receives and processes management requests, provides event notifications
and configuration data to the Oracle VM Manager. Oracle VM Server 3 requires 64-bit x86
hardware, but can support either 64-bit or 32-bit guest virtual machines.
Figure 2. Oracle VM Components
Key Deployment Concepts
Multiple Oracle VM Servers are grouped into server pools as shown in Figure 3. Every server in a
given pool has access to shared storage, which can be NFS, Fibre Channel or iSCSI (or a combination
of these). This allows VMs associated with the pool to start and run on any physical server within the

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pool. Note: Local storage can also be configured but is often not appropriate for production
environment since it prevents or sharply constrains the ability for a VM to run anywhere in the pool in
the event of a server failure or live migration event.
When a VM first starts in the server pool, you can specify a start policy for a virtual machine,
determining whether to always start the virtual machine on the server on which it has been placed, or
to start the virtual machine on the best possible server in the server pool based on an algorithm that
takes into account the server CPU, memory and network utilization. Typically the server that is
assigned to host the VM has the most resources available. Then the VM is associated with the server,
but it can be securely migrated to any other server in the server pool by the administrator or can be
load balanced across the pool based on a dynamic resource scheduling policy.
You can set up High Availability (HA) to help ensure the uninterrupted availability of a virtual
machine. If HA is configured and a Oracle VM Server is restarted or shut down, the virtual machines
running on it are either restarted on, or migrated to, another Oracle VM Server.
Figure 3. Oracle VM Deployment
As a result of this architecture, VMs can easily start-up, power-off, migrate, and/or restart without
being blocked by the failure of any individual server or by the failure of multiple servers as long as
there are adequate resources in the pool to support the requirements for all VMs to run concurrently.
Oracle VM Manager
Oracle VM Manager has been significantly enhanced in version 3 to simplify administrative operations,
provide completely centralized network and storage management, and improve dynamic resource
management for the virtualization environment.
Oracle VM Manager 3 is built with Oracle Weblogic Server, providing enterprise-grade transaction
management for operations, including historical event tracking, and the ability to cleanly abort long-
running operations. Every Oracle VM Manager operation is performed as a structured task known as a
“job” in Oracle VM Manager. A job consists of all the steps involved in the successful completion of

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the operation. The information provided for each job can be viewed from the GUI, and includes
status, progress (percent complete and which steps have completed), and the steps remaining. It is
possible to abort a job at any time, or if the job is aborted by the system because of a terminal failure,
the state is rolled back to its original state. Jobs provide a simple way to see who made changes within
the environment and trace failures.
Oracle VM Manager 3 uses Java and XML within the Oracle ADF (Application Development
Framework). ADF generates JavaScripts to accommodate various browser-rendering. Asynchronous
JavaScript and XML (AJAX) and it is used to give the UI a richer look by providing a way to update
aspects of the UI asynchronously and without requiring the user to hit the browser refresh button to
get an updated view. The Oracle VM Manager also includes a fully interactive tree view and automatic
refresh to show the real-time state of both the physical and virtual environment.
Oracle VM Manager 3 provides the only true browser-based user interfaces compared to other
enterprise server virtualization vendors that rely on Java clients to be installed. Oracle VM Manager’s
browser interface makes it easier to access Oracle VM Manager from nearly anywhere on nearly any
device supporting standard browsers.
Beginning with Oracle VM Manager 3.2, MySQL Database is used as the bundled database for the
Oracle VM Manager management repository for simple installations. Support for an existing Oracle
SE/EE Database is still included within the installer so that you can perform a custom installation to
take advantage of your existing infrastructure. Simple installation using the bundled MySQL Database
is fully supported within production environments. In addition, Oracle VM Manager installations
taking advantage of the bundled MySQL Enterprise Edition Database include fully automated database
backups and a quick restore tool that can help with easy database restoration.
Centralized Network and Storage Configuration and Management
Network and storage are key parts of any application deployment. Oracle VM simplifies these steps by
centralizing all configurations through the Oracle VM Manager and by creating pool-level network
settings and logical storage to reduce administrative time.
Network Configuration and Management
In order to provide the highest and most predictable performance, scalability, and availability for the
VMs, Oracle VM is designed to support sophisticated network configurations. The networking
infrastructure in the Oracle VM environment needs to be able to support a number of functions. For
example:
 The guest network supporting IP traffic between Oracle VM Servers and the outside world
 The management network between Oracle VM Servers and Oracle VM Manager
 The storage network between the Oracle VM Servers and their storage sub-systems
Oracle VM provides the ability to separate networks in order to isolate traffic and maintain a
predictable quality of service. Up to five separate network types can be defined from Oracle VM

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Manager: A server management network, live migration network, cluster heartbeat network, virtual
machine IP network, and a storage network.
When you create an Oracle VM network, you map available network ports to a set of logical Ethernet
networks from the Oracle VM Manager GUI. All Oracle VM Server logical network configuration and
management tasks—such as creating networks, setting up NIC port bonding, and configuring VLAN
Networks—are now performed using Oracle VM Manager.
Storage Configuration and Management
The Oracle Storage Connect framework enables Oracle VM Manager to directly leverage the resources
and functionality of existing storage systems in the Oracle VM environment, supporting native storage
services such as SAN or NFS storage creation, deletion, and expansion. This allows the Oracle VM
Manager to automatically discover available storage using Oracle VM Manager and create new storage
repositories or map raw storage directly to virtual machines. To learn more, please refer to the Oracle
Storage Connect white paper.
Dynamic Resource Management
Automating the virtualized environment to improve application quality of service and reduce power
consumption are key enablers for improving operational efficiency.
Figure 4. Policy Based Dynamic Resource Scheduling
Enhancements in Oracle VM 3 include the following:
 Distributed Resource Scheduling (DRS) for capacity management. DRS provides real-time
monitoring of Oracle VM Server utilization with the goal to rebalance a server pool to provide
consistent resources to the running virtual machines. DRS migrates load away from heavily loaded
Oracle VM Servers to servers running lighter loads. (See Figure 4)
 Dynamic Power Management (DPM) to optimize server pool for minimum power
consumption. DPM complements DRS to reduce the servers in the pool when there are periods of
low resource utilization. It can automatically add capacity as needed when resource utilization ramps
up. (See Figure 5)
Server
Pool 1

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Figure 5. Policy Based Dynamic Power Management
Unified Server Virtualization Management for x86 and SPARC
Beginning with Oracle VM Manager 3.2, it has the ability to discover and manage Oracle VM Server
for SPARC (See Figure 6), thus creating a single management console for both SPARC and x86 virtual
machines. Users can create SPARC server pools, virtual machines, as well as manage networking and
storage in the same way this is done for x86 environments. In addition, SPARC users can quickly
provision new virtual machines from assemblies and template in the same simple way as it is done for
x86. This allows deploying applications in minutes and significantly improves productivity for SPARC
users.
Figure 6. Unified Server Virtualization Management for x86 and SPARC

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The nice thing about the unified management capability from Oracle VM Manager is the common
management framework, and it is the same set of APIs that apply to both x86 and SPARC server
virtualization. For example, full command-line support enables easy automation at the Oracle VM
Manager level. Oracle VM Manager Command Line Interface (CLI) supports the same functions as the
Oracle VM Manager browser interface. Common tasks can be scripted and fully automated, saving
time and lowering the risk of human error. You learn one set of APIs, but you have the flexibility to
manage both x86 and SPARC server virtualization.
Oracle VM Manager Command Line Interface (CLI)
The Oracle VM Manager Command Line Interface can be used to perform the same functions as the
Oracle VM Manager Web Interface, such as managing all your server pools, servers and guests. The
CLI commands can be scripted and run in conjunction with the Web Interface, thus bringing more
flexibility to help you deploy and manage an Oracle VM environment. The CLI supports public-key
authentication, allowing users to write scripts without embedding passwords, to facilitate secure remote
login to Oracle VM Manager. The CLI also includes a full audit log for all commands executed using
the facility. See the Oracle VM Command Line Interface User's Guide for information on using the CLI.
Oracle VM Server for x86
Oracle VM Server 3 is installed on bare metal 64-bit x86 servers and supports 32-bit and 64-bit guest
operating systems such as Linux, Solaris, and Windows. Oracle VM Server incorporates an open
source Xen hypervisor component, which has been customized and optimized to integrate into the
larger, Oracle-developed virtualization server. Oracle VM Server includes Oracle VM Agent to
communicate with Oracle VM Manager for management and configuration. While Oracle VM Server
software uses several open source components and is itself open source, it is a product developed and
offered only by Oracle and that is completely unique to Oracle.
Hypervisor and Management Domain
The hypervisor runs directly on the hardware serving as the abstraction layer for all hardware
operations from the guest OS such as CPU, I/O, and disk requests. By separating the guest VMs from
the hardware, the hypervisor is able to run multiple operating systems securely and independently.
There’s a privileged management domain running on the hypervisor with direct hardware access and
guest management responsibilities. This management domain is known as Domain0 (Dom0).
Hardware support (such as support for the network and storage devices) is provided by the device
drivers installed in Dom0.
The Dom0 has unique privileges to access the hypervisor that are not allocated to any other guest
domains, which are known as User Domains (DomUs). These privileges allow it to manage all aspects
of guest domains such as starting, stopping, I/O requests, etc. Users can perform all the management
functions from the easy-to-use Oracle VM Manager 3 interface, and there’s no need to log into the
Dom0 to perform guest management or device configuration.

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The Dom0 of Oracle VM Server 3 is specially built to handle enterprise-class workload requirements.
It leverages Oracle Linux with the 64-bit Oracle Unbreakable Enterprise Kernel (UEK), but has been
customized and minimized for tight security and scalability in a virtualized environment. The Oracle
Unbreakable Enterprise Kernel is a fast, modern, reliable Linux kernel that is optimized for enterprise
software and hardware. Beginning with Oracle VM Server 3.1, the Dom0 kernel has been updated so
that it is now the same Oracle Unbreakable Enterprise Kernel 2 (UEK2) as used in Oracle Linux, for
complete binary compatibility with drivers supported in Oracle Linux. Due to the specialized nature of
the Oracle VM Dom0 environment (as opposed to the more general purpose Oracle Linux
environment) some Linux drivers may not be appropriate to support in the context of Oracle VM,
even if the driver is fully compatible with the UEK2 kernel in Oracle Linux. Do not install any
additional drivers unless directed to do so by Oracle Support Services.
The optimization of the hypervisor and special-built Oracle Linux with Unbreakable Enterprise Kernel
has enabled Oracle VM Server the most scalable x86 server virtualization solution. For example, Oracle
VM Server 3.2 supports up to 160 physical CPUs and 4 TB memory, and each guest VM supports up
to 128 virtual CPUs (vCPUs) and 2 TB memory. Such scalability limits have been tested on Oracle’s
Sun Server X2-8 System.
Cluster File System – OCFS2
OCFS2 (Oracle Cluster File System 2) is a free, open source, general purpose, extent-based clustered
file system that Oracle developed and contributed to the Linux community. OCFS2 provides an open
source, enterprise-class alternative to proprietary cluster file systems, and provides both high
performance and high availability.
OCFS2 has been incorporated into Oracle VM Server 3 as the underlying cluster file system for server
pools as well as the storage repository. In addition, advanced features including thin provisioning and
instant clone in OCFS2 enable significantly faster and more efficient virtual machine provisioning and
cloning.
Oracle VM Agent
The Oracle VM Agent runs on the Dom0 and handles requests from the Oracle VM Manager. It
processes requests by interacting with the Oracle VM hypervisor, Oracle VM Storage Connect plug-in,
the Distributed Lock Manager (DLM), and the HA framework provided by OCFS2.
When integrated with Oracle Enterprise Manager, Oracle’s system management offering for managing
the complete application stack, top-to-bottom, the Oracle VM 3 agent also serves as a proxy agent for
Enterprise Manager to eliminate the need to deploy additional management agents.
Types of Virtual Machines
Guest virtual machines running on Oracle VM Server can be configured to use one of the following
virtualization modes:
 Paravirtualized (PVM). In paravirtualized mode, the kernel of the guest operating system is
modified to distinguish that it is running on a hypervisor instead of on the bare metal hardware. As a

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result, I/O actions and system clock timers in particular are handled more efficiently, as compared
with non-paravirtualized systems where I/O hardware and timers have to be emulated in the
operating system. Oracle VM supports PV kernels for Oracle Linux and Red Hat Enterprise Linux,
offering better performance and scalability.
 Hardware virtualized or fully virtualized (HVM). When support for hardware virtualization
(Intel VT-x or AMD-V) is available in the host server hardware, the guest operating system may run
unmodified and depend on the hardware features to ensure proper operation in a virtualized
environment. However, HVM can introduce additional overhead since it relies on binary translation
and device emulation. But it brings the benefits of compatibility: largely any “unmofidied” operating
system image such as Linux, Solaris, or Windows that is not virtualization-aware can run as an HVM
guest without any changes, making it easy to consolidate existing physical server images, leaving
them essentially untouched. With the recent development in Intel and AMD processors, in some
scenarios, hardware-assisted virtualization will also provide performance benefits.
 Hardware virtualized using paravirtualized drivers (PVHVM). This mode is identical to
hardware virtualized (HVM), but with additional paravirtualized I/O drivers installed in the guest's
operating system to improve virtual machine performance. This allows the operating system to
essentially run unmodified, but uses PV drivers that have been modified specifically to execute I/O
commands efficiently in a virtualized environment to minimize overhead. PV drivers are provided as
part of the operating system for Oracle Linux and Oracle Solaris. Oracle Linux and Oracle Solaris.
Oracle also provides PV drivers for Microsoft Windows, which have been validated as part of the
Microsoft Server Virtualization Vendor Program (SVVP).
For details of comparing the different virtualization modes, please refer to My Oracle Support
Knowledge Note (Doc ID 757719.1): Comparison of Guest Virtualization Modes, HVM, PVM and
PVHVM.
Oracle Linux with the Unbreakable Enterprise Kernel can be run directly on bare metal or as a virtual
guest on Oracle VM.
Tip: The Unbreakable Enterprise Kernel version kernel-uek-2.6.32-100.34.1 added support for
paravirtualized drivers in a HVM guest on Oracle VM. Starting with this kernel version, the default is
to present only paravirtualized drivers when running in a hardware-virtualized guest. To run kernel-uek
– including the drivers – fully hardware-virtualized, an additional kernel boot parameter
“xen_emul_unplug=never” must be added to the boot parameters in /etc/grub.conf.

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Oracle VM Templates and Virtual Assemblies for Applications
Oracle VM provides the ability to rapidly and easily deploy a single pre-built, pre-configured, pre-
optimized, and pre-patched guest virtual machine (or multiple machines depending on the application).
The guest VM can contain a complete Oracle software solution along with the operating system and
related software infrastructure. These guest VMs, called Oracle VM Templates, are available from
Oracle Software Delivery Cloud edelivery.oracle.com/oraclevm website and are ready to download and
deploy. Already configured for production use, Oracle VM Templates can save users days or weeks
learning to install and configure a sophisticated product such as Siebel CRM or Oracle Enterprise
Manager. Instead, users can simply download and start the VM to begin using it right away.
Within these Templates, Oracle software is automatically configured in the same manner as if the
software had been installed and patched manually. The exact same directories and Oracle “homes” are
used, and the package and patch inventories are completely standard and up-to-date so that no changes
to operational procedures are required to maintain the instances over time. Accordingly, Oracle VM
Templates can also be fully customized post-install and then re-saved as “golden image” Templates in
Oracle VM. Such Templates can serve as a user’s enterprise deployment standard to minimize risks and
variation across multiple instance deployments.
All of the existing Oracle VM Templates that were certified with Oracle VM server 2.x are also
certified with Oracle VM Server 3.
Oracle VM 3 introduces Oracle VM Guest Additions that allow the guest to set/get key/value pairs
through the Oracle VM Manager to the virtual machine, thus provide direct integration between guest
software and the virtualization layer, to assist in orchestration of complex, multi-VM deployments.
Facilities have been provided within Oracle VM Manager 3.2 to send messages directly to a virtual
machine in the form of key-value pairs. Sending a message to a virtual machine may be useful during
certain situations, like developing or starting a virtual machine template. Messages are passed to the
virtual machine operating system, and can be any key/value pair that the operating system or template
understands.
Major Oracle application templates have been specifically built for deployment on Oracle Exalogic
Elastic Cloud, adding to the Oracle VM Templates already available for dozens of Oracle products.
An application “assembly” is very similar to an Oracle VM Template except that an additional set of
configuration information and management policies are packaged along with the set of multiple virtual
machines, their virtual disks, and the inter-connectivity between them. These assemblies are packaged
using the industry-standard Open Virtualization Format (OVF) for the configuration and policy
information. Assemblies can be created as a set of .ovf Open Virtualization Format and disk image
(.img) files, or may all be contained in a single Open Virtualization Format Archive (.ova) file.
Oracle Virtual Assembly Builder is a sophisticated development tool for introspecting the current
application environment and creating assemblies or collections of VMs along with all their critical
configuration parameters to allow you to move them to a virtual environment or to replicate easily and
quickly within an existing environment.

13
Figure 7. Oracle Virtual Assembly Builder
Integration with Oracle Exalogic Elastic Cloud
Oracle VM 3 has been integrated into Oracle Exalogic Elastic Cloud, a reliable, scalable and superfast
engineered system for business applications. Exalogic includes support for a highly optimized version
of Oracle VM, which can be used to subdivide a physical compute node into multiple virtual machines,
each of which may run a separate Oracle Linux operating system instance and applications.
Oracle VM has been engineered for tight integration with Exalogic’s Exabus I/O backplane using
Single Root I/O Virtualization (SR-IOV). This approach requires all operating systems running in
these virtual machines (vServer) to have special device drivers for communicating with the outside
world via Exabus. The benefit of this approach is unmatched application performance: in an Exalogic
configuration, the impact of virtualization on application throughput and latency is negligible.
Application running in Exalogic vServers perform on par with deployments on bare metal, but retain
all of the manageability and efficiency benefits that come with server virtualization.
On Exalogic, Oracle VM significantly outperforms comparable server virtualization solutions from
other leading vendors. The substantial performance advantage that Exalogic enjoys results in better
application usability, improved hardware utilization and lower software licensing costs.
To learn more details about Oracle VM with Exalogic, read the white papers below:
 White paper: Oracle Exalogic Elastic Cloud: Advanced I/O Virtualization Architecture for
Consolidating High-Performance Workloads (PDF)
 White paper: Oracle Exalogic Elastic Cloud: System Overview (PDF)

14
Figure 8. Oracle Exalogic System Architecture
Full Stack Management with Oracle Enterprise Manager
Oracle Enterprise Manager provides an integrated and cost-effective solution for complete physical
and virtual server lifecycle management (see figure 1). By delivering comprehensive provisioning,
patching, monitoring, administration, and configuration management capabilities via web-based user
interface, Oracle Enterprise Manager significantly reduces the complexity and cost associated with
managing Oracle VM, Linux, Solaris, and Windows operating system environments. In addition,
enterprises using Oracle Sun hardware can get deep insight into their server, storage and network
infrastructure layers and manage thousands of systems in a scalable manner. Oracle Enterprise
Manager helps customers to accelerate the adoption of virtualization and cloud computing to optimize
IT resources, improve hardware utilization, streamline IT processes, reduce costs.
For more detailed information, read the white papers:
 Oracle Enterprise Manager 12c Cloud Lifecycle Management Overview White Paper (PDF)
 Oracle Enterprise Manager 12c Application-to-Disk Management Overview White Paper
(PDF)
 Making Infrastructure-as-aService in the Enterprise a Reality (PDF)

15
Conclusion
Successful businesses are defined by efficiency and speed. Those companies that use capital more
efficiently and just-in-time generate higher profits and have more to invest in future initiatives. IT is a
critical component of these organizations’ competitive advantage. The back-office functions that
provide critical services can no longer afford to be a rigid and balkanized organization without optimal
efficiency. Application-driven virtualization is a way to improve IT’s speed, efficiency and agility.
By deploying cloud computing, IT is responding to business requirements for increased agility while at
the same time reducing costs and risks from the IT balance sheet. IT becomes much more responsive
to the business, and through this alignment, a part of the business process.
By virtualizing with Oracle VM Server for x86 and taking advantage of unique Oracle tools, businesses
can reduce their total cost of ownership in the datacenter, increase IT flexibility, and achieve greater
business agility.
Oracle VM 3 demonstrates Oracle’s commitment to deliver application driven server virtualization
solutions. The new capabilities introduced in Oracle VM provide increased levels of scalability,
manageability, and ease-of-use to help customers make the most demanding enterprise applications
easier to deploy, manage, and support.
The best way to experience all the benefits of Oracle VM 3 is to download the software from Oracle’s
Software Delivery Cloud at: http://edelivery.oracle.com/oraclevm, and try it out in your environment.
For more information about Oracle’s virtualization, visit www.oracle.com/virtualization.

16
Appendix 1: References
For more information, visit the Web resources listed in Table 1.
TABLE 1. WEB RESOURCES FOR FURTHER INFORMATION
WEB RESOURCE DESCRIPTION WEB RESOURCE URL
Oracle Virtualization http://oracle.com/virtualization
Oracle VM Templates http://www.oracle.com/technetwork/server-storage/vm/templates-101937.html
Oracle Solaris http://oracle.com/solaris
Oracle Linux http://oracle.com/linux
Sun Servers http://www.oracle.com/servers
Sun Storage http://www.oracle.com/storage
Sun Networking http://www.oracle.com/us/products/servers-storage/networking/
Oracle Enterprise Manager http://www.oracle.com/us/products/enterprise-manager/
Oracle Enterprise Manager Ops Center http://www.oracle.com/us/products/enterprise-manager/opscenter/
Oracle Exalogic Elastic Cloud http://oracle.com/exalogic

Oracle VM 3:
Architecture and Technical Overview
February 2013
Author: Honglin Su
Contributing Authors: Adam Hawley, Chris
Kawalek
Oracle Corporation
World Headquarters
500 Oracle Parkway
Redwood Shores, CA 94065
U.S.A.
Worldwide Inquiries:
Phone: +1.650.506.7000
Fax: +1.650.506.7200
oracle.com
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This document is provided for information purposes only, and the contents hereof are subject to change without notice. This
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Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.
Intel and Intel Xeon are trademarks or registered trademarks of Intel Corporation. All SPARC trademarks are used under license and
are trademarks or registered trademarks of SPARC International, Inc. AMD, Opteron, the AMD logo, and the AMD Opteron logo are
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