If it stays just archival storage, something that is desperately needed....
This is too little, too late.
Anything that requires me to be physically present to swap media during a backup isn't even up for consideration.
300Gb of data per disc means I'd have to swap discs a dozen times to back up my current pile of data data. Not happening.
By the time it reaches 1Tb per disk I'll have even more data to back up. Half a dozen swaps? Still not happening. I want to set the backup going then go to bed while it does its thing.