"Write Once" Archive Share/Dataset

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Feb 24, 2018
I'm trying to configure a share which essentially is read-only for the most part (in that files cannot be modified or deleted) but files/folders can be ADDED to the share for archiving purposes.

Currently, I'm manually changing the permission on the dataset while I copy files across, however it's cumbersome and leaves a window of opportunity for someone (or an application, malware etc...) to modify data over the network. In Active Directory, this was easily achieved by allowing write access while denying delete or modify access.

The share contains data that once written, should never change and the original needs to be preserved.

How is everyone else achieving this? The only other way I could think of doing this would be to create an "Upload" share where you dump whatever files/folders in pre-set folders and the FreeNAS server would periodically move these into their proper, read-only shares as root, but I'm not sure how to go about this or if this is even the best method.
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