{
  "slug": "hmb",
  "term": "Host memory buffer (HMB)",
  "aliases": [
    "HMB"
  ],
  "definition": "An NVMe feature that lets a DRAM-less SSD borrow a small amount of host DRAM for mapping tables and caching.",
  "note": "",
  "status": "shipping",
  "advantages": [
    {
      "text": "Reduces BOM cost versus onboard DRAM while preserving acceptable performance on many client workloads.",
      "citationIds": [
        "c1"
      ]
    }
  ],
  "limitations": [],
  "related": [
    "nvme",
    "consumer-ssd",
    "pcie-storage"
  ],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "citations": [
    {
      "id": "c1",
      "title": "NVM Express — HMB",
      "url": "https://nvmexpress.org/specifications/",
      "accessed": "2026-03-26"
    }
  ]
}