best 2TB migration/setup in new iMac?

[petercw2]

after a ton of overthinking, I'm going to get a iMac to replace my 2011 which I hacked a 2TB fusion drive into several years ago (after the OEM spinner conked out).

But in ordering a new iMac I really want SSD because, well, anything else just doesn't make sense.

But, a 2TB SDD is $1100!! - so, my question: What is the best way to migrate my existing internal FD/2TB setup to a new iMac w/ a 512 internal SSD and a 2TB external SSD (T5, X5, EVO Raid 0 setup, etc). Also, how much speed loss do I gain to experience if I do this setup vs the OEM route?

thanks in advance, this forum is amazing.

 

[AppleFan360]

My advice would be to keep all the applications on your internal 512GB SSD and everything else on your external SSD's. As far as speed, my internal 2TB SSD gets 2000mb/s both read and write. My external SSD's (2x2TB Raid 0) gets about 800mb/s.

 

[petercw2]

I suppose that is my actual question: how would one best best go about divvying up apps vs libraries to two new separate drives when they currently all live on one? Can that be done via Migration Assistant? Or would I need to manually move stuff over by connecting my old iMac to the new?