A quick introduction into server virtualisation with XenServer, including a brief architecture discussion and various features that are available.

1. Introducing XenServer Stephen Rice (Lead Software Engineer) June 2010

2. What is server virtualization? What benefits does it have? Citrix XenServer in detail Taking a look at the feature list Agenda

3. Server virtualization enables multiple virtual machines to run on a single physical server.

4. Almost any operating system you want. Q. What can you run as a virtual machine? Windows (XP, Vista, 7, 2000, 2003, 2008…) Linux (RHEL, SLES, Debian, Centos, Oracle…) Many more community supported guests

5. CPU, Memory Disks(storage) Networks What does a virtual machine need? Shared Storage Pool

6. zzz Non Virtual zzz

7. Virtualization

8. Server consolidation Failure recovery Security and sandboxing Resource balancing Backup, restore and clone Simple management Benefits of Virtualization

10. Server cooling costs

11. Space requirements

14. Legacy testing

16. Spread out for periods of high demand

18. Extend existing capabilities

20. Organizational tools

25. Privileged VM called Domain 0

26. Gives commands to the hypervisor

27. Coordinates networking/storage

28. Communicates with external clients

30. Extra server to manage database (Single POF)

31. Binary translation performance cost

32. Mature feature list

33. High costESXi ESXi ESXi vCenter

35. Any server elected as master

36. Free, pay only for enterprise features

37. Free, stateless thin management clientXen Server Xen Server Xen Server

38. Graphical interface VM console access Component integration Plugins and SDKs XenCentermanagement console

39. XML-RPC based Libraries and examples for Java, C#, C, Python, PowerShell XenCenter uses C# bindings http://community.citrix.com/display/xs/Download+SDKs Open source licensing Backwards compatible Software development kit for XenServer

40. 24 hour project using C# XenServer bindings Ask the VMs politely to turn off Knock them out if they don’t Turn off all slaves first before the master Allow the user to set which VMs should wake SleepyLabs example

41. Message board example

42. Hello world example

43. What else might you need?

44. Safety while you sleep Automaticallymigrates VMs Guarantees protection Master failover High availability

45. Specify a memory range for VMs Squeezes and inflates memory Overcommit to run more VMs Dynamic memory control

46. Monitors VM resource use Recommends VM migrations Maximum performance Maximum density Automatic or manual Workload balancing

47. Integrates with active directory Specify a role per user Roles restrict users feature access Role based access control

48. Snapshot disks and memory Revert to any point in tree Running VM Snapshot and revert

49. Summary

51. Citrix Tshirts, come see me afterwards Also free...

52. stephen.rice@eu.citrix.com