You only need it for capture, so when capturing one reel at a time, and with lossless compression, you can get away with using that drive. You just capture until the drive is 80% full, and then copy it off to HDD storage, and then delete it and continue your capture.

I am using 3 x 1TB SSDs in a RAID0 setup, which works great as well, and it also useful as a work drive when doing corrections etc. as it allows you to work in real time when correcting etc.

A pair of SSDs in RAID0 is fast enough, I went with 3 as it allows me the workspace I wanted.

Of course, you could slow the whole shebang down, and capture at say 5-10fps to a normal HDD, or a single SSD, or have a RAID0 of 6 cheap 1TB HDDs or similar, but being able to capture in real time is a great advantage.