Virtualization

Virtualization

1. Client side

   • Hypervisors
     • Type1(bare metal)
       • eg: VMWare ESXi
       • Very thin layered software
       • Sits in place of OS(on top of hardware)
     • Type2(hosted)
       • eg: VMWare VSphere
       • Hypervisor on top of OS
       • Indirect resource fetching(virtual resources)
       • Types
         • Full Virtualisation
         • Paravirtualisation

2. Server side

   • eg: VMWare VCenter
   • Manages 500 to 1000 VMs
   • Performs Load Balancing

3. Advantages

   • Server Consolidation
   • isolation
   • Cost effective

4. Limitations

   • Incerase in Overheads
   • Maintanence issues

5. Core 4 resources

   • CPU
   • Memory
   • Network card
   • Disk

6. Similar Tech

   • SDCC
   • VDC
   • Cloud computing