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Old 01-08-2020, 04:28 PM
jwhitley jwhitley is offline
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Join Date: Nov 2007
Posts: 5
Originally Posted by dnanian View Post
That's referring to the internal SSD, which is controlled by the T2, not the external backup.
Thanks Dave. For posterity, I dug up the relevant Apple Platform Security page Internal volume encryption when FileVault is turned on. Most of the linked page is obviously directed at internal device policy, but at the end it makes this explicit call-out:

Note: Encryption of removable storage devices doesn’t utilize the security capabilities of the Apple T2 Security Chip, and its encryption is performed in the same manner as Mac computers without the T2 chip.
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