QEMU is a fast processor emulator. The package currently supports arm, powerpc, sparc and x86 emulation. By using dynamic translation it achieves reasonable speed, while being easy to port to new host CPUs. QEMU has two operating modes: 
1.	User mode emulation: QEMU can launch individual Linux processes compiled for one CPU on another CPU. 
2.	Full system emulation: QEMU can emulate a full system, including the processor and peripherals. This enables testing and debugging of system code in a contained (and quarantined) virtual system. It can even be used to host several virtual machines simultaneously on a single server (given enough host processor power and RAM). 
 
 
Hands-On Labs Session 
In this Hands-on manual, you will learn build from scratch a virtual machine and how to setup and install it on Ubuntu 10.04 LTS (Lucid Lynx). Upon completion of this hands-on lab session you should have gained expertise and skills to plan design implement and deploy your own virtual machines on Linux Ubuntu 10.04 LTS server. You could put your virtual machine for all kind uses: Data storage & backup, web server, database server etc. You can use this knowledge to build VM for cloud computing e.g., when building your own cloud using OpenNebula cloud computing.

Using QEMU To Build and Deploy Virtual Machines (VMS) From Scratch On Ubuntu 10.04 LTS v1.2 PDF

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