1. Virtualization Virtual Data Center Design

8. Hardware emulation uses a VM to simulate the required hardware

10. Full virtualization uses a hypervisor to share the underlying hardware

15. Paravirtualization shares the process with the guest operating system

17. Operating system-level virtualization isolates servers

22. Linux-related virtualization projects GPL Operating system-level virtualization OpenVZ GPL Operating system-level virtualization Linux-VServer GPL Paravirtualization UML GPL Paravirtualization Xen Proprietary Full virtualization z/VM Proprietary Full virtualization VMware LGPL/GPL Emulation QEMU LGPL Emulation Bochs License Type Project

27. z/VM (full virtualization)

32. User-mode Linux (paravirtualization)

45. Linux KVM (Kernel Virtual Machine)

58. Virtual Infrastructure A collection of storage resources can be partitioned and allocated to virtual servers using raw mappings or virtual hard disks iSCSI, SAN and NAS storage technologies are used for reliable persistent storage Virtual servers connect through virtual NICs to physical or virtual networks Each server can have multiple gigabit Ethernet cards (NICs) to provide required throughput and availability A Virtualized Node consists of a collection of CPUs and RAM that can be allocated to a virtual server Industry standard Intel and AMD servers upon which the virtualization layer is automatically deployed Virtual Infrastructure Physical Resource