External USB rotated drive questions

[driley]

Hello,
We are researching using USB rotated drives as an extra layer of protection and I have a few questions.
We would probably need 20 TBs in each of the 2 rotated enclosures.
1. Anybody have a favorite vendor of these types of units?
2. Have you used them as ReFS formatted drives?
3 I'm thinking of using these for Backup Copy jobs, can they run along with regular Backup Copy jobs to a "non-rotated" filesystem, or do they need to be scheduled differently?
Thanks in advance!
D.

[veremin]

2. You can do that, but you won't make any use of ReFS intergration.
3. No need to schedule it differently.

Thanks!