*Virtualization*

(data center {before}- high density environment)

server(machine) can store multiple services

virtualization-abstract layer(OS no longer to be bound to the server per PC that it runs on) The OS is abstracted from the hardware.

SErver virtualization- makes possible for the OS of a physical server to run on virtual layer(the hypervisor)

This allows you to run multiple virtual machines(VMS). Each with their own OS on the same physical
server

Virtual Host                                                      Virtual Mchine

physical server with virtualization layer                 Each guest OS running on th HOST

DEFINITION of HYPERVISOR

Create virtualization layer that makws server virtualization possible
contains the virtual machine manager (VMM).

Examples of Hypervisors

VmWare (ESX/ESXI VSphare)>for server
HyperV > for server
VmWare Workstation
Fusion > for apple
Virtual Server > onother player for
XenSErver >Linux

Type 1 vs type 2 hypervisor

Type 1 hypervisors

* loaded directly on the hardware
-hyperV
-ESX/ESXI
-XEN Server

Type 2 Hypervisor( the process is not good as type 1 hypervisor)

* Loaded in an OS running on the Hardware
-VmWare Workstation
-MSFT Virtual Server
-Fusion



ADMINISTER ENTERPRISE VIRTUALIZATION

*Insfracture is what connects resources to your business.

*Virtual Insfracture is a dynamic mapping of your resources to your business.

*Result decleased cost and increased efficiences and responsiveness.


administer enterprise

Private Cloud Resources pools

VMware vSphere

You should turn off the virtual os to add more memory, but in Vmotion its ok to add memory while the virtual os is running.

application servers-V motion
            storage vmotion
           
Other Virtualization

Desktop
Network
I/O
Application
Storage