1. Intro to Virtualization Andrew Hamilton TJ IT Technician

2. Theory Do one thing and do it well (UNIX philosophy) Compartmentalize Services Benefits of many systems in one

3. Advantages Security Access Control Upgrades Potential for High-Availability Clustering Resource management

4. Disadvantages Overhead Proliferation of systems Upgrades

5. Virtualization Types Containers – Very minimal overhead – Only one OS Paravirtualization – Minimal overhead – OS must support the hypervisor Full Virtualization – Runs almost anything – Often high overhead

6. Microsoft Hyper-V Full virtualization / Hypervisor Primarily Supports Windows Server Oses Free version available

7. Solaris Zones/Linux Containers Container Solutions Extremely low overhead Shares kernel with host OS VM Filesystems mounted in host system

8. Solaris LDOMs Full virtualization solution Only available on UltraSPARC servers Support for non-Solaris is iffy

9. Linux Kernel Virtual Machine Full Virtualization solution Leverages hardware virtualization extensions – AMD-V / VT-x Low overhead Works with most operating systems

10. Oracle Virtualbox Full Virtualization Works with most Oses Higher overhead Can use AMD-V/VT-x Primarily for desktop virtualization

11. Microsoft Virtual PC Full Virtualization Works with most Oses Higher overhead Some versions require AMD-V/VT-x Primarily for desktop virtualization

12. VMWare Full Virtualization / Hypervisor Works with most Oses Can use AMD-V/VT-x Well-supported

13. Xen Hypervisor Paravirtualization Low overhead OS must support Xen (primarily Linux) Can leverage AMD-V / VT-x

14. Example TJ Computer Systems Lab Xen Virtualization with Gentoo Linux 6 VM Servers ~25 VMs

15. Any Questions? Contact Info: ahamilto@tjhsst.edu www.tjhsst.edu/~ahamilto/josti2010/