Virtualization Technology

Karim KhowajaAsst. Manager IT, Security & Power SupplyPrimatics Financial LLC.www.primaticsfinancial.comkar_khowaja@hotmail.comhttp://www.linkedin.com/in/karimkhowaja

Outline

Background Problem Assessment Virtualization

What it is? Why it is essential? Its types Architecture Market Solutions for Virtualization

Demo

BackgroundSMB organizations contain simple servers as following

BackgroundLarge Enterprises contain a huge number of servers

Problem Assessment

Low utilization metrics in servers across the organization…

Problem Assessment

Heterogeneous Environments

Problem Assessment

High costs and infrastructure needs Floor Space Infrastructure Networking Power Cooling Maintenance Disaster Recovery

Solution

Virtualization Defined

Virtualization is a broad term that refers to the abstraction of resources across many aspects of computing

For our purposes - One physical machine to support multiple virtual machines that run in parallel.

Why Virtualization?

Too many servers for too little work

Aging hardware reaching end of usable life

High infrastructure requirements

Limited flexibility in shared environments

Benefits of Virtualization

Reduce the number of physical machines Isolate environments but share hardware Make better use of existing capacity Virtualize Network and SAN interfaces to

reduce infrastructure needs Ultimately save on maintenance and leases

More options available today than ever before…

Cost Reduction Example

Cost Reduction Example

Virtualization Scenarios

Hardware Virtualization Software Virtualization

Full Virtualization Virtual Machine Monitor (VMM) exports a virtual

machine abstraction identical to a physical machine, so that standard operating systems can run just as they would on physical hardware with no modifications.

Para-Virtualization Calls to the hardware from the guest OS are replaced

with calls to the virtual machine monitor (VMM).

More Software Options

Wide array of virtualization products now available in the marketplace

Partnerships with Operating System vendors (i.e. SuSE, RedHat, Sun) yield tighter integration and better performance.

More Hardware Options

Larger Intel/AMD machines with more CPU and memory

16, 32, 64-bit Intel machines now available with up to 1 TB RAM

X86 Hardware Virtualization Intel VT AMD Pacifica

Core Technology

The Hypervisor A computing layer which allows multiple operating

systems to run on a host computer at the same time.

Originally developed in the 1970s as part of the IBM S/360

Also known as VMM (Virtual Machine Monitor)

The Hypervisor

Conceptual diagram of typical server configuration without virtualization

The Hypervisor

The role of the Hypervisor in supporting Guest Operating Systems on a single machine.

Hardware Virtualization (example) IBM pSeries Servers

http://publib.boulder.ibm.com/infocenter/eserver/v1r2/topic/eicaz/eicaz508.gif

Software Virtualization (example) VMware Server (GSX)

http://openlab-mu-internal.web.cern.ch/openlab-mu-internal/openlab-II_Projects/Platform_Competence_Centre/Virtualization/Virtualization.asp

Marketplace Offerings

Freely Available

OpenVZ (Open Source) VMWare Server (GSX) Xen 5.0 (Open Source) Sun Virtual Box

Commercial

Virtuozzo VMWare ESX Xen Enterprise Microsoft Virtual Server Virtual Iron

OpenVZ

Maintained by SWsoft, Inc (http://www.swsoft.com/)

Branch from their commercial Parallels Virtuozzo product

Supports 64-Bit Guest Operating Systems Linux only, Open Source Product Free open source software http://openvz.org/ http://wiki.openvz.org/Main_Page

VMWare Server (formerly GSX) Maintained by VMWare (http://www.vmware.com/)

Est. 1999 - More mature than many competitors

Supports 32 & 64-Bit Guest Operating Systems Some limitations for clustering and HA imposed by

vendor Windows and Linux Host/Guest OS Support Freely available for download, but has charged

support http://www.vmware.com/products/gsx/ http://www.vmware.com/products/server_comp.html

Xen 5.0

Available from Xen Source (http://www.xensource.com)

In association with University of Cambridge (http://www.cl.cam.ac.uk/Research/SRG/netos/xen/)

Support for 64-Bit and 32-way machines Supports IntelVT Supports Windows & Linux Guest OS Open Source Product – One of the most actively

maintained projects in the open source community Free

VMWare ESX Server

Maintained by VMWare (http://www.vmware.com/)

Supports 64-Bit Guest Operating Systems Advanced clustering and high availability features Windows and Linux Guest OS Support Advance management tools Low-overhead Hypervisor base installation Not a free product

http://www.vmware.com/products/esx/

Virtual Server 2005 R2

By Microsoft Support for 64-bit and 32-way machines Linux and Windows support for Guest OS’s Specialized license rights for relevant products

can help you take advantage of existing and future technologies across the complete Microsoft virtualization platform.

http://www.microsoft.com/windowsserversystem/virtualserver/default.aspx

Current Architecture

Virtualized Architecture

Issues and concerns

Support, integration and compatibility of different operating systems on the multivendor hardware being virtualized.

Network traffic through a single path (NIC), resulting in problems with bandwidth availability and throughput.

The entire environment becomes as critical as the most critical application running on it, so uptime requirements become much higher.

Virtualization Demo

Karim KhowajaAsst. Manager IT, Security & Power SupplyPrimatics Financial LLC.www.primaticsfinancial.comkar_khowaja@hotmail.com(092)344-3800678