Fastest Video Editing Storage?

Hey everybody,

I've recently upgraded my good old 2012 Mac Pro with a boot SSD, a USB 3.0 card and a GTX 1080 (non-ti; didn't want to deal with the power reqs). The next thing I need to get sorted is storage. No Thunderbolt on the system, so what is the best storage solution y'all have found in the ~6TB range that'd work on my system? Thanks in advance!

With the old Mac Pro (not the trashcan) the fastest option would be internal harddisks as a RAID.
You system SSD is so small, you can put it somewhere else, like into the optical bay.

The second best solution is an e-SATA card connected to an external RAID.

With the old Mac Pro (not the trashcan) the fastest option would be internal harddisks as a RAID.
You system SSD is so small, you can put it somewhere else, like into the optical bay.

The second best solution is an e-SATA card connected to an external RAID.

Forgot to thank you for the advice. Decided to compromise and get a large internal SSD (2TB) for editing, and a USB3 drive for mass storage. I'll keep a couple of small 256GB SSDs in the system for scratch disks, and of course an SSD for boot. I also added a good, calibrated 4k/10-bit monitor and Decklink 4k to drive it as well as up my RAM to 32GB.

If this doesn't keep up with my needs, I'll look into adding a second 2TB SSD and going the RAID route (and moving up to 64GB RAM); but I'm thinking this will be a kickass editing rig that will last a while considering I have no intention of moving to native 8k editing anytime soon.

Thanks again Uli.