

They are at 30 presently. The “standard” is somewhere around 300-500 which, again, is acceptable for cold storage at the current tape drive size of 10-30tb.
There are minimums expected as density increases. Cold storage / backup still needs this to be viable.

We are talking theoretical here, of course. For enterprise to even give it a realistic look it needs to outperform very time tested equipment so… Were probably looking at needing to beat on cost, capacity, speed… Or to put it simply its actual value / cost for implementation. Currently there are a few different research grade projects at various stages of lab testing… And this, like those, needs to fundamentally provide (noteworthy) gains over the existing and also be able to be consistent outside of the lab. Were a fair bit away from that yet.
I mentioned earlier that we are in dire need of meaningful, long term, non-magnetic storage… And I genuinely believe that. But while I can be interested in the tech - it still needs to be viewed with a critical eye until it can produce results.