{
  "advantages": [],
  "limitations": [],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "updated": "2026-10-16",
  "slug": "idle-read-after-write",
  "term": "Idle Read After Write (IRAW)",
  "aliases": [
    "IRAW"
  ],
  "status": "research",
  "definition": "Idle Read After Write is a research technique that retains completed-write data for comparison with disk contents during idle periods.",
  "note": "The 2008 study evaluates cache and scheduling policies through traces and simulation. It does not certify present-day drives or quantify field failure prevention. [iraw]",
  "related": [
    "read-after-write-verification",
    "write-back-cache",
    "data-scrubbing"
  ],
  "citations": [
    {
      "id": "iraw",
      "title": "Alma Riska and Erik Riedel (Seagate Research). Idle Read After Write - IRAW. USENIX ATC 2008, pp. 43-56; sections 2-5.3.",
      "url": "https://www.usenix.org/legacy/events/usenix08/tech/full_papers/riska/riska.pdf",
      "accessed": "2026-10-16"
    },
    {
      "id": "hesela-verification",
      "title": "HDD write verification: completion, persistence and comparison",
      "url": "https://hesela.com/analyses/hdd-write-verification-iraw/",
      "accessed": "2026-10-16"
    }
  ]
}