Virtualization Discussion #3

• SAN storage

  • File system runs in a host
  • Host sees storage as “disks”
  • Predominant interconnect: Fibre Channel

• NAS

  • File system runs in a storage device
  • Host sees storage as file systems
  • Predominant interconnect: TCP/IP+Ethernet

• A better way to look at it
  • NAS: heterogeneous file access
  • SAN: best I/O performance measured at host

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