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  • Loss of machine
    • What does this mean? When we label a misbehaving machine as toast?
    • Multiple machine types: client, master, backup (separate service colocated w/ master), coordinator
  • Loss of rock rack
    • Common failure scenario - must be able to handle gracefully
    • Implies we need # of racks >= # of copies of replicated data for durability
  • Network Partitions
    • Should not lose sanity when these occur.

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