{
  "slug": "e1-l",
  "term": "E1.L",
  "aliases": [
    "EDSFF 1U Long"
  ],
  "definition": "E1.L is the long 1U device form factor in the EDSFF family, with mechanical requirements defined by SFF-TA-1007.",
  "note": "SFF-TA-1007 specifies the device housing, card-edge position, front-panel and latch mounting, and indicator placement for a compatible 1U host. The long form factor is distinct from E1.S rather than an alternative name for EDSFF. [c1]\n\nIts intended use includes high-capacity storage, but the form factor alone supplies no capacity or endurance rating for an individual SSD. [c2]\n\nNominal width and length are 38.4 and 318.75 mm; thickness options are 9.5 and 18 mm. Include latch and front-plate projections when checking the bay. [c1]",
  "status": "shipping",
  "advantages": [],
  "limitations": [],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "updated": "2026-11-02",
  "related": [
    "edsff",
    "e1-s",
    "e3-s",
    "enterprise-ssd",
    "nvme"
  ],
  "citations": [
    {
      "id": "c1",
      "title": "SNIA SFF-TA-1007 Rev 1.3: scope and mechanical requirements",
      "url": "https://members.snia.org/document/dl/26644",
      "accessed": "2026-11-02"
    },
    {
      "id": "c2",
      "title": "SNIA SSD Form Factors: E1.L use cases",
      "url": "https://www.snia.org/forums/cmsi/knowledge/formfactors",
      "accessed": "2026-10-18"
    }
  ],
  "provenance": [
    "Added as a distinct member previously misclassified as an EDSFF alias. No universal device-to-slot compatibility is asserted."
  ]
}