1. Virtualization Week 20

2. This week Virtualization – What is it? – Software on different operating systems? Group Presentations – 10-15 minutes per group

3. What is it? “...a technique for hiding the physical characteristics of computing resources from the way in which other systems, applications, or end users interact with those resources. This includes making a single physical resource (such as a server, an operating system, an application, or storage device) appear to function as multiple logical resources; or it can include making multiple physical resources (such as storage devices or servers) appear as a single logical resource." taken from:Mann and Andi (N/Aapplications end usersserveroperating systemstorage device

4. VMWare VMware allows multiple operating systems can run unmodified and at the same time on a standard PC. For developers: – run multiple development environments on your desktop without rebooting – isolate and protect operating environments, applications and data – interoperate among operating systems For users, VMware makes it possible to run Windows applications with Linux.

5. Taken from Nieh and Leonard (2000)

6. It makes a standard PC hardware within a VM appear to run multiple unmodified PC operating systems simultaneously on the same machine. Done by running each operating system in its own VM. Still need a native OS to the machine – host OS. An OS running as effectively as an application on top of VMware is called a "guest OS."

7. Virtual PC Microsoft’s Virtual PC download from: http://www.microsoft.com/windows/downloads/ virtualpc/default.mspx http://www.microsoft.com/windows/downloads/ virtualpc/default.mspx Free Works in a similar way to VMWare

8. Issues http://www.bcs.org/server.php?show=ConWeb Doc.9428 http://www.bcs.org/server.php?show=ConWeb Doc.9428 http://www.bcs.org/server.php?show=ConWeb Doc.18204 http://www.bcs.org/server.php?show=ConWeb Doc.18204 http://www.bcs.org/server.php?show=ConWeb Doc.20446 http://www.bcs.org/server.php?show=ConWeb Doc.20446

9. Storage virtualisation An unlimited number of storage resources over shared physical storage infrastructure, i.e. SAN (Storage Area Network).

10. Desktop Virtualisation desktop operating systems are installed onto emulated hardware. Or, Users accessing a remote desktop on a multi-user operating systems.

11. Network Virtualisation Example, Cisco Systems VLAN technology allowing logical segmentation of network.

12. References Mann and Andi (N/A), Virtualization 101, Enterprise Management Associates (EMA),.Virtualization 101http://www.emausa.com/ema_lead.php?ls=virtwpws0806&bs=virtwp0806 Cited by Wikipedia. Nieh J and Leonard OC (2000) “Examining Vmware” DrDobbs Journal http://www.ncl.cs.columbia.edu/publications/drdobbs2000.pdf http://www.ncl.cs.columbia.edu/publications/drdobbs2000.pdf http://www.bcs.org/server.php?show=ConWebDoc.9428 http://www.bcs.org/server.php?show=ConWebDoc.18204 http://www.bcs.org/server.php?show=ConWebDoc.20446