Building a 10GbE NAS for Video Editing

[TribalHound]

With that requirement you'll be looking at a minimum 6 bay NAS

Bays 1 & 2 with a RAID1 1TB SSD configuration for the system.
Definitely going to need that 10GBe port (standard or optional), or PCIe slots to add 10GBe or pair of 5GBe's
Another PCIe slot for a pair of SSDs for read / write caching - a couple of WD Red SN700's in 500GB / 1TB should be enough - make sure there's extra cooling.
Then if you're 6 bay add 4x10TB (or larger) WD Red Pros in a Raid 10 should give you some pretty nifty speeds & 20TB (or larger) capacity.
If you're 8 bay, you could shrink those down to just what you need for working files and then add a final Raid1 pair for your storage, maybe 2x16TB for a little head room.

Should be able to keep up with your multiple PCs potentially accessing all at the same time, plus will more than keep up with your internet speeds.

Oh yes - you need 'a box' to put this in.
Realistically there's only 3 choices (all QNAP) :
TVS-hx88X (12 or 16 disc)
TVS-x72X (or XT if you need thunderbolt 3) (6 or 8 disc)
TVS-hx74 (6 or 8 disc)

If you've regularly got a 1TB file to transfer and work with, that 10GBe will make all the difference, just make sure any switches / cabling can keep up. If it's multiple smaller files, you could get away with link aggregation with 4x 2.5GBe or 2x 5GBe.

Hope this helps !!