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1.8" SSDs directory on

(also includes MO-297 slim and mSATA)

see also:- M.2 SSDs, SSDs on a chip, hybrid DIMMs
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1.8", MO-297 slim & mSATA SSD manufacturers list
Although not nearly as crowded as the 2.5" SSD market - over 50 companies have, at one time or another marketed 1.8" SSDs. These were mostly aimed at the notebook SSD market (the Cinderella part of the SSD market), the embedded industrial SSD market and more recently in the enterprise SSD market (in RAID systems). The most common interfaces in this form factor are SATA and PATA although there have also been SAS SSDs in the 1.8" footprint.

As to PCIe? It is unlikely that any or many SSD makers will implement PCIe in 1.8" devices. The more natural market flow instead is towards the M.2 form factor.
Addonics

ADLINK Technology

Advanced Media

Apacer

APRO

ATP Electronics

Audavi

Avant Technology

Biwin

Cactus Technologies

CoreSolidStorage

Emphase

Flexxon

FMJ

Foremay

Freecom Technologies

Fujitsu

Greenliant Systems

HGST

Intel
Iomega

KingFast

KingSpec

Kingston Technology

LaCie

Macrotron Systems

MagicRAM

MemoCom

Micron Technology

Microsemi

Mtron

OCZ

PCcardsDirect

PhotoFast

PLDS

PNY Technologies

PQI

pureSilicon

Ramaxel Technology

Renice Technology

Samsung Electronics

SanDisk

SDK

Seagate

SMART

Soligen

Super Talent Technology

Swissbit

TCS

TDK

Team Group

Toshiba

UDinfo

Unigen

V&G

Viking Modular Solutions

Virtium

Waitan

Walton Chaintech

WD

Wilk Elektronik

Wintec
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1.8 still great (after 27 years and still counting)
Editor:- February 6, 2018 - A new blog by Virtium - says that the company thinks "1.8-inch will remain strong in embedded, IIoT and M2M applications for some time to come."

Editor's comments:- 10 years ago there were 22 manufacturers of storage drives listed on . The highest capacity 1.8" SSD at that time in 2008 was 128GB.

The 1.8" storage drive form factor was created for the portable PC market with the first drives being shipped in .

M.2 was the designated successor to 1.8" for SSDs in notebooks. But form factors can have a life of their own.

For example - in 2011 1.8" SSDs with SAS interfaces were a hot product for use in enterprise storage arrays.

Nowadays if equipment designers have gone to the trouble of supporting 1.8 SSDs (solo or arrays) in legacy designs (with interfaces like PATA, SATA or SAS) then it's still easier to continue supporting that in markets where requalifying the box is expensive (like medical) rather than switch to M.2 for no customer discernible benefit. In some markets EOL is an expensive option.
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