{
  "slug": "areal-density",
  "term": "Areal density",
  "aliases": [],
  "definition": "Bits stored per unit of disk surface area, the central metric driving HDD capacity growth.",
  "note": "",
  "status": "shipping",
  "advantages": [],
  "limitations": [],
  "related": [
    "hdd",
    "pmr",
    "hamr"
  ],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "citations": [
    {
      "id": "c1",
      "title": "Areal density",
      "url": "https://en.wikipedia.org/wiki/Areal_density",
      "accessed": "2026-03-26"
    }
  ]
}