VIRTUALIZATION

VIRTUALIZATION

1. DEFINITION

   • generate virtual instances of computer resources
   • hide real resources
   • run multiple server on a single computer

2. BENEFITS

   • No hardware components for installation
   • can access from a third party
   • no extra cost for supply of servers
   • less power consumed

3. CHALLENGES

   • slow down servers
   • long time to backup and recover
   • for server only

4. DRAWBACKS

   • expensive
   • some applications cannot be virtualized
   • suitable for larger networks
   • complicated system and network management

5. CLOUD+VIRTUALIZATION

   • pooling of resources
   • high speed
   • automatic software updates

6. TYPES

   • Desktop virtualization
     • management becomes more efficient
   • Server visualizaion
     • virtualize server infrastructure
   • I/O Virtualization
     • share i/o devices among multiple virtual machines
   • Network
     • merges resources in a network
     • each channel remain independent
   • Storage virtualization
     • leader on the storage is SAN