is the 2TB fusion literally 2 drives?

[squaredeux]

question: is it literally a 128GB PCIE ssd and then a separate 2tb 7200 HDD that is "fused" via software? meaning, for whatever reason if i decide to unfuse them, i could essentially never use the 2tb HDD and just use the 128gb pcie ssd and achieve nearly the performance of the 256/512 gb ssd?

 

[dborod]

My understanding is that yes, there are 2 separate storage devices, fused through software, to function as a single logical drive.

https://www.google.com/webhp?hl=en#safe=off&hl=en&q=diskutil+fusion+drive
http://www.techrepublic.com/article/pro-tip-how-to-create-and-disable-a-fusion-drive/