e3-s · shipping · also EDSFF E3 Short

E3.S

E3.S is the short member of the EDSFF E3 device family specified by SFF-TA-1008.

Related Observatory article: E3.S on hesela.com

E3 includes SSDs and non-storage devices such as CXL devices, accelerators and network interfaces. The E3.S designation identifies an enclosure family, not an NVMe command set or performance rating. [1]

The Rev 3.0 changes can make older devices incompatible. Rev 3.0a requires a mechanical key intended to prevent unsuitable older devices from entering direct-liquid-cooled systems and encountering damaging pressure; check the exact enclosure and host revision. [1]

Nominal E3 width is 76 mm; short devices are 112.75 mm long, compared with 142.2 mm for E3.L. Thickness is 7.5 mm for single-thickness devices and 16.8 mm for 2T. These enclosure dimensions do not establish host support. [1]

Relations

related
EDSFF, E1.S, E1.L, U.2, NVMe, CXL memory expansion

Citations

  1. SNIA SFF-TA-1008 Rev 3.0a: revision history and sections 4 and 5.7 (accessed 2026-11-02)
Sources & caveats
  • Added as a distinct member previously misclassified as an EDSFF alias. Specification coverage is not a hardware qualification result.

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Hesela team. E3.S. Hesela. 2026-11-02. https://hesela.dev/terms/e3-s/