Yes - it's always best to track to a secondary drive. I don't know of a single professional engineer who would risk a session to their boot drive.
Let your boot drive handle running the OS and the applications. Let a secondary drive handle the session.
FWIW, I like the Seagate drives & use one myself for all my tracking. I buy bare hard drives and use this external dock:
https://eshop.macsales.com/shop/exte...owc-drive-dock
It allows be to swap drives for different projects very quickly.