E1 form factor
The E1 form factor (previously also called the ruler ) is a design for solid-state drives . The official name is 1U Short SSD Form Factor . These storage devices should initially be connected via the NVM Express interface, ultimately via PCI Express . The form factor was introduced by Intel in 2017 .
The standardization of this design by the SNIA was approved in summer 2018.
Relevant standards:
| Standard number | Surname | Url |
|---|---|---|
| SFF-TA-1006 | Enterprise and Datacenter 1U Short SSD Form Factor | https://members.snia.org/document/dl/26956 |
| SFF-TA-1007 | Enterprise and Datacenter 1U Long SSD Form Factor | https://members.snia.org/document/dl/26644 |
| SFF-TA-1002 | Protocol Agnostic Multi-Lane High Speed Connector | https://members.snia.org/document/dl/27231 |
| Form factor |
size | interface | performance recording |
default |
|---|---|---|---|---|
| E1.S | 111.50 mm x 31.5 mm | PCIx4 | Max. 12 W. | SFF-TA-1006 |
| E1.L | 318.75 mm x 38.4 mm | PCIx8 | Max. 40 W | SFF-TA-1007 |
The aim of the standard is to accommodate as much solid-state memory as possible in a 19-inch rack (1 height unit ), in this case a maximum of 36 units. In 2018 plug-in cards according to E1.S with a capacity of 8 TByte are already available, so up to 288 TByte storage capacity can be accommodated in one height unit. The connector and form factor are also designed to support upcoming bus standards such as PCI-Express 4.0 and Gen-Z.
Individual evidence
- ↑ More details on Intel's Ruler SSDs. Retrieved August 9, 2018 .
- ↑ Intel's Ruler SSDs get expansions. Retrieved August 9, 2018 .