direction: down

Data system: {
  shape: rectangle
}

Reliability: {
  label: "Reliability\ncontinues to work\ncorrectly under faults"
  shape: rectangle
}
Scalability: {
  label: "Scalability\nreasonable ways to\ncope with growth"
  shape: rectangle
}
Maintainability: {
  label: "Maintainability\nmany people can work\non it productively"
  shape: rectangle
}

Hardware faults: {
  label: "Hardware faults\ndisk dies, power fails"
  shape: rectangle
}
Software errors: {
  label: "Software errors\nbugs, runaway processes"
  shape: rectangle
}
Human errors: {
  label: "Human errors\nmisconfiguration"
  shape: rectangle
}

Load parameters: {
  label: "Load parameters\nrequests/sec, fan-out,\nread/write ratio"
  shape: rectangle
}
Percentiles: {
  label: "Performance\np50, p95, p99"
  shape: rectangle
}
Scale up: {
  label: "Scale up\nbigger machine"
  shape: rectangle
}
Scale out: {
  label: "Scale out\nmore machines"
  shape: rectangle
}

Operability: {
  label: "Operability\nops can keep it running"
  shape: rectangle
}
Simplicity: {
  label: "Simplicity\nnew engineers understand it"
  shape: rectangle
}
Evolvability: {
  label: "Evolvability\nfuture changes are easy"
  shape: rectangle
}

Data system -> Reliability
Data system -> Scalability
Data system -> Maintainability

Reliability -> Hardware faults
Reliability -> Software errors
Reliability -> Human errors

Scalability -> Load parameters
Scalability -> Percentiles
Scalability -> Scale up
Scalability -> Scale out

Maintainability -> Operability
Maintainability -> Simplicity
Maintainability -> Evolvability