Azure Classroomnotes 29/Dec/2022

Hypervisor

• Hypervisor helps us in creating virtual machines
• Types:
  • Type I :
    • A light weight hypervisor os installed directly on bare metal
    • Examples:
      • VmWare ESxi
      • Vmware Sphere
        
  • Type II:
    • Installed on Operating Systems and creates the virtual machines
    • Examples:
      • Hyper V
      • VmWare Workstation
      • Virtual Box
        
• Server Virtualization Softwares help in interacting with individual hypervisors and creating vm’s effectively
  
  

6 R’s of Migration

• There are following R’s which define our cloud adoption journey
  
• Re-Host:
  • Lift and shift
  • Here we migrate our application infra into cloud using migration tools
• Re-Platform
  • Lift, tinker and shift
  • Make minor changes in the way applications are hosted to adopt to new platforms on cloud and move to cloud
• Re-factoring:
  • Completely redesign your application into modern/cloud native way.
• Re-Purchasing:
  • Alternative in the cloud available, so purchase it rather than migration
• Retire:
  • Retire the product line
• Retain:
  • Perform the migration after some time due to other priorities.

P2V and V2V Migrations

• P2V (Physical to Virtual):
  • Has to dealt one by one
    
• V2V (Virtual to Virtual)
  • Multiple Vms can be moved/migrated simulataneously with the help of Virtualization Softwares.
    

What can be migrated ?

• Servers:
  • Physical Servers:
    • Not all Operating System versions are supported
  • Virtual Servers:
    • Hyper V
    • VmWare ESxi
  • Clouds:
    • AWS
    • GCP
• Databases:
  • All relational Databases can be migrated
• Storage:
• Modernization:
  • Applications => App Services
  • Applications => Containers (AKS)