Depends what you need.
If just disk then it is eazy. Just slap in some 4 2tb drives and there you go. Separate drive for os.
This option does not have error tolerance if eny drives will fail.
And yes if you try to put same data through “one rope” so to say it will fail compared to internal drives.
Proper way would be with external array with raid 5 or 6.
With hd projects at hand i’d invest a bit or back up often.
—
Margus
https://iconstudios.eu