Stateful vs. Stateless

• Why is NFS stateless?
  • ND (Network Disk) was Sun's previous method of sharing disks
    • Connection state made recovery a nightmare
    • What if server crashes in middle of an update?
    • Think of surviving an open TCP connection
  • Solution: shove all recoverly logic onto client
    • Current logic: Hang process, timeout
    • Similar to Swarm methodology

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