Virtualisation

Virtualisation

1. components

   • hypervisor
     • types
       • type 1
         • bare-metal hypervisor
         • direct top installation
         • no middle os
         • advantages
           • performance
           • stability
           • runs outside OS
         • Examples
           • oracle VM
           • KVM
           • Microsoft Hyper-V
       • type 2
         • hosted hypervisors
         • runs on the hardware
         • one software layer
         • Advantages
   • system host OS
   • system host hardware

2. advantages

   • better efficiency and performance
   • isolated
   • minimal hardware cost
   • less space consumption
   • reliable
   • better backup

3. Infrastructure

   • Server containment
   • Development optimization
   • business continuity

4. challenges

   • Depleted resources
   • Lack of application awareness
   • high costs
   • Congested storage network