> I have some 2TB drives and I'm wondering if leaving 200GB (10%) or 300GB (15%) is overkill.
I don't think so myself. The larger the drive, the more overhead becomes desireable. Ten per cent is a bare minimum, and I've found it to be riskier with larger drive.
Also, going to 10 per cent tends to mean you don't have enough storage for your project(s), period. Especially with files getting bigger and bigger, with more elements and rendering necessary.
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