Virtualization

Virtualization

1. Benefits

   • cost reduction
   • responsiveness
   • flexibility
   • sustainability
   • workload balancing
   • simplification

2. Challenges

   • attacks on infrastructure
   • compliance and management challenges
   • attacks on features of virtualization

3. Drawbacks

   • can have a high cost of implementation
   • costs a lot of time
   • creates a scalability issue
   • creates a security risk

4. Definition

   • way to run multiple OS and user applications on the same hardware

5. Types of hypervisors

   • Type 1
     • runs directly on host machine's physical hardware
     • doesn't have to load an underlying OS
     • Examples
       • Microsoft Hyper-V
       • Apple Boot Camp
   • Type 2
     • installed on top of existing OS
     • relies on host machine's pre-existing OS to manage resources
     • Examples
       • Microsoft Virtual PC
       • Oracle Virtual Box