Datto NAS Access Control List

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Scope

This article explains the Access Control List for files stored in Datto NAS shares.

Background

An Access Control List, also commonly abbreviated as ACL, lists the permissions attached to a file or object.

For example, if a file has an ACL that contains (Alice: read,write; Bob: read), this would give Alice permission to read and write the file and Bob to only read it.

Datto NAS ACL

There are two major permission sets for files on Datto NAS Shares:

  • Write Access for Creator Only (WACO): Provides write access strictly for the creator of the files.
  • Write Access for All (WAA): Provides write access for all.

Below is a chart that explains the following:

  • What happens to the existing files when a share goes from public to private (vise versa)
  • What happens when Write Access for Creator Only gets changed to Write Access for All Users (vise versa)
Change from This... To This Apply Change to Existing Files?
Public Private; WACO No
Private; WACO Private; WAA Yes
Private; WAA Private; WACO No
Private; WACO Public Yes
Private; WAA Public Yes
Pre-existing file permissions are always unchanged when a NAS share changes to private, because the Datto NAS does not know exactly what permissions are needed for what files.

If Enable Write Access for All Users button is showing, that means that the share is set up so that Write Access for Creator Only is enabled. That means that all newly created files will be writable only by the creator of the file. 

If Enable Write Access for Creator Only button is showing, that means that currently the share is set up so that Write Access for All Users is enabled. That means that all newly created files will be writable by all users.


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