A History of SSDBy Andy Zheng

The First SSD SSDS invented by IBM in mid 1950s Charged Capacitor Read Only Store

(CCROS) Predecessor to today’s flash memory Core Memory created at the same

time Used by NASA for it’s stability

Evolution of SSD Used by early supercomputers of IBM

(1970s-1980s) Price of SSD too expensive General Instruments used EAROM in

1970s Early version of NAND flash Life span of this was <10 years

SSD’s now M-Systems introduced flash-based

SSDs, 1995 No batteries required High I/O performance and reliability Not as fast as DRAM Since then SSD successfully replace

HDD Slowly becoming more mainstream