if you're insisting on using the cheapest drives on amazon, you probably can't fit 5TB of data into a small room worth of computers.

if you're a reasonable person, you buy 6 1TB samsung SSDs and stuff them into a single 2U case and you're done.

And you're gonna cry when the RAID0/JBOD fails and you lose all your data.

Let's not pretend there is anything reasonable in this setup.

Presumably your data is (1) mirrored to another similar server ready to replace in case of failure and (2) also regularly backed up to two off-site locations...

Why do you want the cheapest drives? Do you value your application data?