Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
It doesn't make sense to do that.
The SSD will run faster as a "standalone" (NON-fusion) drive...
 
  • Like
Reactions: chabig
Why do you ask - do you already have both drives?

I would avoid using a fusion drive. My mini had one and, over time, the mechanical one began to fail. In the case with a fusion drive, if either of them fails then you're in deep do-do.

After Apple confirmed my spinning drive was the issue, I opted to put two SSDs in my 2012 and have been extremely happy.
 
im currently have two the drives, and i want to combine to one 1TB volume
I’m with the others in joy recommending that. Both drives are good sized already. There is no benefit to combining them into a single volume.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.