How to Build an Efficient Raspberry Pi NAS: A Complete Installation and Configuration Guide
Sep 6, 2024

Raspberry Pi NAS
A Raspberry Pi NAS is a specialized type of Network-Attached Storage (NAS) that provides a centralized location for storing and managing data within a home or office network. Unlike traditional external hard drives, which are typically connected directly to a single computer, a NAS is connected to a network, allowing multiple users and devices to access, store, and share files over the network.
Creating a NAS (Network-Attached Storage) using a Raspberry Pi is a fantastic way to build NAS with Raspberry Pi, offering a personalized and cost-effective storage solution for your home or small office. A Raspberry Pi NAS allows you to store, access, and share files across your network, functioning as a centralized hub for your data.
With self hosted cloud storage, your data is where you want it to be: in your home or your cloud of choice. For foundational Raspberry Pi setup guidance, see this Raspberry Pi OS setup guide from SunFounder.
Benefits
Affordability: Raspberry Pi provides an inexpensive alternative to commercial NAS systems, making it a popular low cost NAS solution among enthusiasts.We can set up a NAS with minimal investment, making it accessible for hobbyists and tech enthusiasts.
Customizability: With a Raspberry Pi, we're in control of your NAS configuration, giving us the flexibility to create a customized Raspberry Pi file server.We can choose the operating system, storage setup, and additional services to tailor the NAS to your specific needs.
Low Power Consumption: Raspberry Pi is highly energy-efficient, making it ideal for running a NAS 24/7 without significant impact on your electricity bill. This makes it well-suited for long-term Raspberry Pi data storage applications.
Flexibility: Whether you need a simple file server, a media server, or even a backup solution, a Raspberry Pi NAS can adapt to various roles, all while running on open source software. For example, you can turn a Pi into a secure file server by following this Raspberry Pi Samba file server tutorial.
Remote Access: We can access your NAS from anywhere, turning your Raspberry Pi into a personal cloud server that’s always available — especially when paired with Nextcloud Raspberry Pi solutions.
Requeriments
● Raspberry Pi: Raspberry Pi recommended for better performance
● Raspberry Pi OS: 32-bit is sufficient, but 64-bit can provide better performance
● MicroSD card: 32GB recommend
● Network connection: Ethernet preferred, but Wi-Fi works too — ensuring reliable performance for Raspberry Pi cloud storage.
● External USB Storage: USB 3.0 for better write/read performance
Raspberry Pi NAS Solution

Nextcloud
Nextcloud offers a self-hosted alternative to services like Google Drive or Dropbox, giving us full control over your data while leveraging the affordability and flexibility of a Raspberry Pi — especially through easy NextcloudPi installation.
Nextcloud integrates seamlessly with a variety of other services and platforms, including calendars, contacts, talk and document editing tools.

Main Features as NAS Server
File Sync and Share
Sync Across Devices: Users can synchronize files across multiple devices (desktop, mobile, web) seamlessly.
File Sharing: Easily share files with others, whether they are Nextcloud users or not. You can share via links, set passwords, and expiration dates for additional security.
Collaborative Editing: Integrates with office suites like Collabora Online or OnlyOffice, allowing multiple users to edit documents simultaneously— a key feature of Nextcloud Raspberry Pi deployments for teams.
Security and Privacy
End-to-End Encryption: Nextcloud Raspberry Pi installations offer end-to-end encryption, providing strong protection for your files and ensuring that only you and the intended recipients can access them.
Two-Factor Authentication (2FA): Enhances account security by requiring a second form of authentication.
Mobile and Desktop Clients
Cross-Platform Availability:Native apps for Windows, macOS, Linux, Android, and iOS, allowing for easy access and synchronization across all devices. For a practical example of setting up a Raspberry Pi media server with cross-device access, see this guide on the SunFounder blog.
Installation
NextcloudPi is a Nextcloud instance that is preinstalled, preconfigured and includes a management interface with all the tools you need to self-host your private data in a single package, making NextcloudPi installation fast and beginner-friendly.

Pre-installed Image
1.Visit NextcloudPi Github and download the NextcloudPi Raspberry Pi image versión https://github.com/nextcloud/nextcloudpi/releases
2.Install Raspberry Pi Imager to a computer with an SD card reader. Put the SD card that you will use with your Raspberry Pi into the reader and launch Raspberry Pi Imager.
3.Select the Raspberry Pi as Device
Choose OS and select Use Custom.Browse the NextcloudPi image and flash the Raspberry Pi to build NAS with Raspberry Pi quickly and efficiently.
4.Choose OS and select Use Custom. Browse the NextcloudPi image and flash the Raspberry Pi

5.Complete your custom setting (WiFi Setttings)
6.Put SD Card in Raspberry Pi and power on.
7.Open a web browser and access to https://raspberrypi_ip:4443/activate
Copy and save the credentials and Activate your NextCloudPi.

Basic Configuration
1.Go to Nextcloud Panel https://raspberrypi_ip:4443/
2.Clic on Wizard


External Storage
If we plan to use external storage (e.g., USB drive), for our Raspberry Pi data storage setup, connect it to your Raspberry Pi.

External Access:
If we want to access your Nextcloud server from outside your local network, set up Dynamic DNS (DDNS) and port forwarding— follow this NextcloudPi remote access guide or the Nextcloud community remote access forum for detailed instructions and best practices.
● Enable nc-ddns and choose a DDNS provider.
● Forward ports 80 (HTTP) and 443 (HTTPS) on your router to your Raspberry Pi IP address.

3.Login with user ‘ncp’ and your Nextcloud password generated

Upload and share or open your files with web UI

Use the desktop clients to keep your files synchronized between your Raspberry Pi file server and your desktop. https://nextcloud.com/install/
Troubleshooting Common Storage Issues on Nextcloud on Raspberry Pi
● External Drive Not Recognized
The drive might be in a format that the Raspberry Pi doesn’t recognize. Reformat it to EXT4 using the nc-format-USB option in NextcloudPi, or manually using gparted on another computer.
● Slow Performance with External Storage
Ensure that the external drive is connected to a USB 3.0 port for faster data transfer, which is especially important for a Raspberry Pi backup server.Occasionally, optimize the Nextcloud database by running:
sudo ncp-update-nc
sudo ncp-config
# Select 'nc-database' and optimize it
● NextcloudPi Web Interface Not Accessible
Connect to your Raspberry Pi via SSH and run the following command to check if the NextcloudPi service is running— refer to the Nextcloud occ status documentation or the NextcloudPi official documentation for detailed instructions and examples.
sudo systemctl status apache2
If the service is inactive or failed, restart it to restore your NextcloudPi installation.
sudo systemctl restart apache2
Conclusion
With a well-configured Raspberry Pi NAS powered by NextcloudPi, we now have a powerful, low-cost, and private cloud storage solution. From secure file storage to calendar and contact management, Nextcloud provides a wide range of apps and integrations that you can easily install and configure based on your needs. Regularly update your system and backup your data to keep your Nextcloud server running smoothly.
