Overview if virtualization and its products

What is Virtualization what are the products are available in market to achieve this(Typically server, application and Desktop Virtualizations)



Ø  Virtualization provide a layer of abstraction between computer hardware systems and the software running on them. It allows multiple operating system instances to run concurrently on a single computer.

Ø  virtualization system sits  between the guest and the hardware, it can control the guests’ use of CPU, memory, and storage, even allowing a guest OS to migrate from one machine to another.

It means of separating hardware from a single operating system. Each “guest” OS is managed by a Virtual Machine Monitor (VMM), also known as a hypervisor.

Hypervisor virtualization is where the true power in virtualization comes from.

There is two types of hypervisors

Ø  Type 1 Hypervisor(native, bare metal)  à  These are installed on the bare metal of the server. It means directly on the physical  hardware e.g. Citrix XenServer, VMware ESXI, Microsoft
 Hyper-V 2008/2012

Ø  Type 2 Hypervisor(hosted)  à  These are installed on the existing host operating system e.g. VMware workstation, Oracle Virtual box etc…


Type 2 Hypervisors are SLOW.  In most reviews and experience, they perform at roughly 30-40% hardware capability.  That means an OS in a VM run off VMware Workstation will likely perform at           best like it has an 800 MHz CPU if you have 2 GHz physical CPU. You install Type 2 hypervisors onto of an existing host operating system.

If you use a Type 1 Hypervisor, you get much better performance. Citrix XenServer, VMware ESXI are all Type 1 hypervisors - typically get 80-90% hardware capability - so that same VM run off the same 2 GHz CPU should operate more like it has a 1.6 GHz CPU instead of 800 Mhz.

Type 1 hypervisors are installed on the bare metal of the server. It means directly on the physical hardware.


So, as for downloads, take your pick.... Many options, and many free offerings, by VMware, Microsoft, Citrix and Oracle.

Type 2 Hypervisor(hosted) Downloads for Windows OS:

VMware Player 5.0 Free Download [FREE]
http://www.vmware.com/go/downloadplayer/

VMware Server 2.0.2 Free Download (discontinued) [FREE]
http://downloads.vmware.com/d/info/datacenter_downloads/vmware_server/2_0

VMware Workstation 9.0 (60 day trial) [EVALUATION]  à Its duly  available in our PC-COE Licensed version with full features as well
www.vmware.com/go/downloadworkstation

Oracle Virtualbox 4.0 [FREE]
http://www.virtualbox.org/   

Parallels Workstation 6
http://www.parallels.com/uk/products/desktop/pd4wl/


Type 1 Bare Metal Hypervisors( also referred as server Virtualization products):

VMware vSphere Hypervisor (ESXi 5.0) [FREE]
https://my.vmware.com/web/vmware/info/slug/datacenter_cloud_infrastructure/vmware_vsphere_hypervisor_esxi/5_0

Microsoft Hyper-V Server 2008 R2 with Service Pack 1 (SP1) [FREE]
http://technet.microsoft.com/en-us/evalcenter/dd776191.aspx

Microsoft Hyper-V Server 2012 [FREE]
http://www.microsoft.com/en-us/server-cloud/hyper-v-server/default.aspx

Citrix XenServer
http://www.citrix.com/products/xenserver/overview.html

Oracle VM
http://www.oracle.com/us/technologies/virtualization/oraclevm/overview/index.html

Parallel Server Bare Metal
http://www.parallels.com/uk/products/server/baremetal/sp/


There are also products for Application virtualization and Desktop virtualization too as below.

Application Virtualization:

Citrix XenApp
http://www.citrix.com/downloads/xenapp.html

VMware ThinApp
https://my.vmware.com/web/vmware/details?productId=323&downloadGroup=THIN-473

Microsoft App-V
http://www.microsoft.com/en-in/download/details.aspx?id=27760

Desktop Virtualization:

Microsoft Virtual Desktop Infrastructure(VDI)
http://www.microsoft.com/en-in/download/details.aspx?id=20782

Citrix Xen-Desktop
http://www.citrix.com/downloads/xendesktop/evaluations-and-trial-software.html

VMware Horizon View
https://my.vmware.com/web/vmware/details?downloadGroup=VIEW-520-PREMIER&productId=320&rPId=4175


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