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Regardless of whether you’re a data hoarder or just want to preserve important files, building a self-assembled Network Attached Storage (NAS) rig can be a worthy addition to your computing environment. Before setting up your NAS, you’ll need to install an operating system that suits your specific needs.
TrueNAS Core is a stable OS perfect for archiving data, but it may not receive many new features due to iXsystems focusing resources on Scale. Debian-based distros with SnapRAID and MergerFS provide a powerful NAS setup for Linux enthusiasts. Unraid offers easy setup, thousands of apps, and plugins, but comes at a cost.
When choosing an OS, consider TrueNAS Scale, which is perfect for most users despite being free. OpenMediaVault is great for low-end systems and can be installed on top of an existing distro. It’s feature- laden and supports multiple file systems, including Btrfs, Ext4, F2FS, JFS, and ZFS.
In summary, there are many operating systems designed for NAS systems. TrueNAS Core offers stability but may not receive new features. Debian-based distros provide a powerful setup for Linux enthusiasts. Unraid offers easy setup and thousands of apps, but comes at a cost. OpenMediaVault is great for low-end systems, while TrueNAS Scale is perfect for most users despite being free.
Source: https://www.xda-developers.com/best-nas-operating-systems/