Virtualization

Virtualization

1. Definition

   • Multiple OS
   • Same Hardware
   • Isolated OS
   • Guest OS
   • Host OS

2. Hardware

   • Virtual BIOS
   • Virtual Machine File System
   • Virtual Config File
   • Virtual Disk and Swap

3. Types of Hypervisor

   • Type 1
     • Bare Metal
     • No Middle Layer
     • Hard Setup
     • eg. VM Esxi
   • Type 2
     • Hosted
     • Middle Host OS
     • Easy Setup
     • eg. VirtualBox

4. Benefits

   • Scalabilty
   • Cost Effective
   • VM Isolation
   • VM Migration
   • Security
   • Testing
   • Disaster Recovery

5. Challenges

   • Compliance and Management
   • Licensing Issues
   • Capacity Planning
   • Hyper Jacking
   • Guest Hopping

6. Cloud Computing + Virtualization

   • Distributed Resources
   • Scalable
   • Secure
   • Parallel/GPU
   • High Availability
   • CLOUD
     • SAAS
     • PaaS
     • IaaS
     • Public
     • Private
     • Hybrid