OpenNAS vs TrueNAS

OpenNAS is a free NAS operating system for managing files, storage, containers, and virtual machines through a browser-based desktop on your own hardware. It is based on Alpine Linux, targets x86_64, and is licensed GPL-3.0-or-later. File Station handles uploads and downloads, previews for common media and document formats, ZIP operations, recycle-bin restoration, and expiring password-protected public links. Storage tools show S.M.A.R.T. health, RAID status, and per-volume usage, and support disk initialization and configurable storage for virtual machines and containers. Container Manager handles Docker containers and images, logs, resource statistics, and docker-compose stacks. KVM/QEMU virtual machines support ISO booting, qcow2 disks, and an in-browser noVNC console. Package Center offers one-click self-hosted services such as Jellyfin, Nextcloud, Pi-hole, Vaultwarden, Gitea, Home Assistant, Portainer, and Immich. File sharing supports SMB/CIFS, NFS, and AFP, with Time Machine targets. The Free plan is free. The current installer is version 0.9.0-beta.1 for x86_64 and supports UEFI and BIOS boot; it requires compatible 64-bit x86_64 hardware, at least 2 GB RAM, and an 8 GB or larger USB stick.

TrueNAS Community Edition is free storage software that provides file, block, and object storage through one interface. It uses ZFS capabilities including snapshots, replication, RAID-Z, and self-healing checksums. Listed services include SMB, NFS, iSCSI, S3 API compatibility, apps, Docker containers, and virtual machines. Administrators can manage it through a web UI or CLI and use SNMP, syslog, reporting, and the TrueNAS API. Security options include self-encrypted drives, dataset encryption, encrypted replication, WireGuard, OpenVPN, ACLs, and IP filtering. The maker lists integrations or certifications involving Kubernetes CSI, Proxmox, VMware, Veeam, Red Hat OpenShift, and others. The Community Edition is a free software download for x86 hardware, with support through forums, documentation, release notes, and bug ticketing. Professional support is described for Enterprise customers. TrueNAS publishes security advisories and recommends configuring systems according to its security best practices. Moving from TrueNAS CORE to Community Edition is a one-way upgrade.