[1] Unlike Flashcache and other caching solutions, it doesn't use the Linux device mapper.
[1] This means it does not create a new block device and caching can be added to existing disks, without reformatting or even unmounting them.
Late 2012 sTec published code for the Linux module on GitHub.
In 2013, Western Digital acquired sTec Inc.[4] They offered the EnhanceIO product briefly under their HGST brand.
As the project was abandoned, several forks were created with some patches to let EnhanceIO work on later kernels.