What happens if I get apple one but want to keep 2 TB of storage?
What happens if I get apple one (200 of storage) but want to keep 2 TB of storage I currently have?
Question marked as
You keep both the 200GB Apple One storage plan and your existing 2TB iCloud+ plan.
What happens to your iCloud storage when you sign up for Apple One - Apple Support
If the iCloud storage included in Apple One is less than your current plan -
You keep both your current iCloud+ plan and the iCloud storage in Apple One.
If you prefer to keep only the storage included in your Apple One subscription, you can downgrade or cancel your current iCloud+ plan.