Setting up user accounts and permissions properly is one of the most important steps in running a NAS, whether it sits in a family home or a small office. This guide walks you through creating accounts, organising them into groups, and assigning the right level of access to shared folders, so nobody sees files they shouldn’t and nothing gets accidentally deleted.
Getting this right matters more than most people expect. A NAS often holds family photos, financial records, backups, and media libraries, all in one place. Without proper permissions, anyone on the network could open, edit, or wipe out folders that were never meant to be shared. Learning to configure a NAS correctly from the start makes this whole process far easier.
Table of Contents
What you’ll need
- A NAS device that is already set up and connected to your network
- Administrator access to the NAS control panel or admin app
- A list of everyone who needs access, and what they should be allowed to do
- Shared folders already created, or a plan for how you want them organised
- A web browser or the NAS manufacturer’s desktop app on a computer connected to the same network
Understanding users, groups, and permissions
Before diving into the settings menu, it helps to understand how the three main pieces fit together. A user account belongs to one person and controls how they log in. A group is a collection of users who share the same access needs, such as “Family” or “Admin Team”. Permissions are the rules applied to shared folders that decide what a user or group can do once they are logged in, such as read-only, read-write, or no access at all.
Working through groups rather than assigning permissions to each user individually saves a huge amount of time later. If you ever need to change what the whole household or office can access, you simply edit the group instead of every single account.
Step 1: Plan your accounts and groups
- Write down every person who needs access to the NAS, including yourself as the administrator.
- Decide what each person actually needs to do: some may only need to view photos, others may need full read-write access to shared work files.
- Group people with the same needs together, for example “Parents”, “Kids”, “Guests”, or “Staff”.
- Note which shared folders already exist or need to be created, such as Photos, Backups, Media, or Documents.
Step 2: Create user accounts
- Log in to the NAS control panel using an administrator account.
- Open the section of the interface dedicated to users or accounts, usually found under a control panel or privilege settings area.
- Select the option to add a new user and enter a username and a strong, unique password for that person.
- Add an email address if the system supports it, as this is often used for password resets and notifications.
- Assign the new user to one or more groups you planned earlier, if the option appears at this stage.
- Repeat this process for every person who needs their own login.
Avoid sharing a single login between multiple people. Individual accounts let you track who accessed or changed a file, and make it far easier to revoke access for one person without affecting everyone else.
Step 3: Create and manage groups
- Open the groups section of the NAS control panel.
- Create a new group and give it a clear, descriptive name.
- Add the relevant users to that group.
- Repeat for each group you planned, such as separating household members from guests, or staff from management.
Groups are particularly useful once you have more than a handful of users, since permission changes can be applied to the whole group in one step rather than repeated for each account.
Step 4: Assign folder permissions
- Open the shared folder settings area of the NAS control panel.
- Select the shared folder you want to configure, such as Photos or Backups.
- Open the permissions tab for that folder.
- Assign each user or group a permission level, typically read-write, read-only, or no access.
- Set no access as the default for any group that should never see that folder, rather than leaving it unassigned.
- Save the changes and repeat for every shared folder on the NAS.
A simple reference can help keep permission levels consistent across folders:
| Permission level | What it allows | Typical use case |
|---|---|---|
| Read-write | View, add, edit, and delete files | Household admin, work team members |
| Read-only | View and download files, no changes | Guests viewing shared photos or documents |
| No access | Folder is hidden or inaccessible | Private folders, financial records, backups |
Step 5: Set quotas and extra restrictions (optional)
- Open the user or group quota settings if you want to limit how much storage each account can use.
- Set a storage limit in line with how the NAS space is shared between users.
- Consider enabling two-factor authentication for admin accounts, if the NAS supports it, for an extra layer of security.
- Review application access permissions separately, since some NAS platforms manage app access, such as backup tools or media servers, apart from basic folder permissions.
Tips and troubleshooting
- If a user cannot see a shared folder at all, check that their account or group has at least read-only access assigned to it.
- Remember that permissions can be layered from both user and group settings, so a conflicting group permission can sometimes override an individual setting. When in doubt, check both.
- Use unique, strong passwords for every account, especially the main administrator login, since this account controls every other setting on the device.
- Periodically review your user list and remove accounts for anyone who no longer needs access, such as a former housemate or past employee.
- If you plan to access your NAS remotely, double check that remote users only have permissions to the folders they genuinely need, since exposing more of the NAS to the internet increases risk.
- Keep a written record of who belongs to which group, particularly once you have more than a few accounts, so future changes stay organised.
Frequently asked questions
Do I need a separate account for every person using the NAS?
Yes, wherever possible. Individual accounts allow you to control access precisely, track activity, and remove one person’s access without disrupting everyone else on the system.
What is the difference between a user permission and a group permission?
A user permission applies to one person’s account directly, while a group permission applies to every account belonging to that group. Most NAS systems apply the most restrictive combination of the two, so it’s worth checking both if access seems inconsistent.
Can I limit how much storage each user is allowed to use?
Most NAS platforms include a quota feature that lets you cap storage per user or group. This is useful for shared households or offices where one account might otherwise fill the available space.
Should the administrator account be used for everyday access?
No. It is safer to create a separate standard user account for daily use and reserve the administrator login purely for configuration changes, since this account has full control over the entire NAS.
