{
  "slug": "afr",
  "term": "Annualized failure rate (AFR)",
  "aliases": [],
  "definition": "The expected fraction of drives failing in a year, popularized by large-scale field studies.",
  "note": "",
  "status": "shipping",
  "advantages": [],
  "limitations": [],
  "related": [
    "mtbf",
    "nearline-hdd"
  ],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "citations": [
    {
      "id": "c1",
      "title": "Annualized failure rate (AFR)",
      "url": "https://en.wikipedia.org/wiki/Annualized_failure_rate",
      "accessed": "2026-03-26"
    }
  ]
}