zfs get all | grep crypt
TANK encryption off default
In the GUI for the pool & Datasets, (under Storage), the pool will show a padlock icon, indicating some or all of the children Datasets are encrypted. Then for the Datasets themselves, any encrypted ones will show a padlock icon. Either locked because it has not been un-locked. Or un-locked padlock icon for those Datasets that have been un-locked.
Does this mean, I can relocate the disks into a new truenas device without the need for password? What purpose has the "pwenc_secret" file in this case? (contained in backup.tar & located in /data/)