9 Virtualization Software - Xen and VMWare

Hello students,

So far we covered the entire classification (taxonomy) of Virtualization. In the business world, Xen, VMWare and HyperV are some of the leading virtualization products.

Xen uses ParaVirtualization technique, VMWare uses Full Virtualization technique whereas HyperV uses the both Para and Full Virtualization techniques together

We dig deeper into Xen and VMWare in this lecture

Xen

Xen uses the ring-based ISA security model to prevent any sensitive priviledged instructions been executed by normal users running their their virtual machines.

Xen also introduces the feature of web http access to configure and manage the virtual machines over the web.

Xen is popularly used by AWS cloud provider.

VMWare

VMWare was the first company to introduce virtualization. When it arrived, it provided a heavy full virtualization where entire operating system had to be loaded in every virtual machine.

VMware also uses ring-based ISA security model.

VMware provides three key flavours of virtualization

  • Desktop virtualization
    • remote desktop virtualization
  • Server virtualization (ESXi servers)
    • load balancing multiple web servers
  • Cloud virtualization (vSphere, vCenter, vCloud, vFabric, Zimbra )
    • virtualization over data centers and physical machines.






Thank you


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