sTec, Inc., was an American computer data storage technology company headquartered in California. It had research and development, sales, support and manufacturing sites in China, India, Japan, Malaysia, Silicon Valley (USA), and Taiwan.

sTec, formerly Simple Technology then SimpleTech, was founded by Manouch Moshayedi and Mark Moshayedi in 1990. The company designs, develops and manufactures solid-state drives (SSDs) based on flash memory and dynamic random access memory (DRAM), providing them to data center environments and original equipment manufacturer (OEM) customers.

Customers include Dell, EMC, Fujitsu, HP, and IBM. sTec also has distributors, resellers and system integrators.

sTec was acquired by HGST, a Western Digital company. Western Digital completed the acquisition of sTec on September 12, 2013.

In 1990, Simple Technology was founded by two brothers from Iran: Manouch Moshayedi and Mike Moshayedi. Using $100,000 of their own savings, the brothers created a company that designed and sold computer memory modules. Three years later, Mark Moshayedi (aged 38 at the time) joined the company as chief operating and technical officer. They are of Iranian (Persian) descent. Mark is related to them.^{[citation needed]} From 1990 to 2007, the company designed and manufactured flash solid-state drives, dynamic random-access memory (DRAM), and static random-access memory (SRAM).^{[citation needed]}.

In 1994, Simple Technology bought Cirrus Logic’s flash controller operation, to enter the flash memory business for consumer electronic devices. In 1998, Simple Technology bought SiliconTech Inc., obtaining that company's business flash memory customer base and operation. In 1999, sTec was first to market the 1 GB solid-state IDE storage devices, SDRAM modules and also 320 MB Type II CompactFlash.^{[citation needed]}

Simple Technology became a publicly traded company on the NASDAQ stock exchange on September 26, 2000, under the ticker symbol of STEC.

The company shortened its name to SimpleTech in 2001.