Virtualization-the cloud enabler
Pravin Hanchinal Co-founder & CEO
INSPIRE- groups
presentations
What is Virtualization?
Virtualization is the ability to run virtual machines on top of a hypervisor
Virtualization and Cloud Computing
• Virtualization is the ability to run "virtual machines" on top of a hypervisor
• A hypervisor provides a uniform abstraction of the underlying physical machine.
• Abstraction in the key idea in Service Models of Cloud!
Timeline of Virtualization
• 1970s: virtual machines first used
• 1990s: x86 becomes prominent server platform
• 1999: VMWare first product to virtualize x86
• 2006: AMD and Intel offer hardware support
Benefits of Virtualization
• Greatest Cost Savings• Highest Server Utilization• Built-In High Availability• Zero Downtime Failover• Best Performance• Unmatched Reliability• Superior Security• Lowest TCO• Fastest, Easiest Management
* Image source: http://whitehatvirtual.com/blog/bid/334816/Top-5-Benefits-of-Desktop-Virtualization
What is a Virtual Machine (VM)?
• A virtual machine (VM) is a software implementation of a machine that executes programs like a physical machine.
• Each VM includes its own kernel, OS, supporting libraries and apps.
Some scenarios
The desktop user who wants to run a copy of Windows on his Linux computer running simultaneously
Some scenarios
A system architect wanting to run 3 different server OS on one machine or a cluster
Some scenarios
A programmer who wants to test his programs on a platform the customer is using
VMM / Hypervisor
▪ VMM: Virtual Machine Monitor▪ Small special purpose operating system✓ Each process acts like a separate computer or VM✓ Can run a full OS in each virtual machine
Types of hypervisors (VMM)
• Type 1 (or native, bare metal) – run directly on the host's hardware to
control the hardware and to manage guest OS.
• Type 2 (or hosted) – run within a conventional operating
system environment.
How to execute guest instructions on a host?
Interpretation(emulation)
Slow execution speed, but easy implementation
Translation
Dynamic translation (JIT): translation while running
Static translation (AOT): multiple binary problemComplicated but faster execution, especially with optimizations
Run directly on the hardware
When the host and guest ISA are binary compatible
Types of Virtualization
Server VirtualizationDesktop VirtualizationApplication Virtualization
MemoryDataStorageNetwork
Server Virtualization -Vendors
VMWare ESXCitrix XenServerMicrosoft Hyper-VRed Hat RHEV
Desktop Virtualization
VDI (Virtual Desktop Infrastructure)Session Virtualization
image courtesy
Desktop Virtualization -Vendors
Desktop Virtualization - VendorsCitrix XenDesktopCitrix VDI-in-a-BoxVMWare viewVM Ware VDI-in-a-BoxMicrosoft VDIRedhat RHEV for Desktops
Application Virtualization
App on DemandNo installation,Easy upgrade
image courtesy
Application Virtualization -Vendors
Citrix XenAppVMWare ThinAppMicrosoft App-V
Pros and Cons of Virtualization
Pros:SandboxHardware independentOS independentFast RecoveryLive BackupMigrate dataReduced HardwareRun Multiple OS SimultaneouslyCost savingsUse of Multicore processorsSystem SecurityTest and Development
Cons:Less EfficientUnstable PerformanceTools lack abilityRapid DeploymentLatency of Virtual DiskBackup and Data SetsSecurity IssuesHardware compatibility issuesManaging and Securing is difficult
Virtualization: Enterprise Perspective
Reduced cost–Improve server utilization–Reduce hardware costs–Reduce power consumption
Agility–Operational scalability–Rapid provisioning
Security–Isolated Systems
Enough! Lets see in Action
Source: http://www.crackerjackann.net/blog/is-a-lack-of-leads-frustrating-you
Thank you
more presentation atinspiregroups.co.in/presentations/
Stay connected
pravinhanchinal.com
What Next?
Go through this presentation againExplore moreRead DocumentationsExperiment
Useful Resources
http://inspiregroups.co.in/our-blogs/cloud-computing/
https://www.youtube.com/playlist?list=PLBo_x6sCgJ-HkYWzJSI2XqvHZft5Sc1L4
https://www.youtube.com/watch?v=3j3f5l2La7I
http://www.citrix.com/products/xenserver/overview.html
http://www.zdnet.com/virtualisation-suites-compared-7000001456/
http://wiki.xenproject.org/wiki/Xen_Beginners_Guide
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