Abstract The exponential growth of digital data has increased the demand for scalable, secure, and cost-effective storage solutions. Commercial cloud services offer convenience but introduce challenges such as recurring costs, limited storage, vendor lock-in, and privacy concerns. This paper presents the design and implementation of a private cloud storage system using TrueNAS SCALE, ZFS file system, and Nextcloud. The system converts legacy hardware into a cloud server that supports centralized storage, remote access, and multi-user collaboration. The proposed solution ensures complete data ownership, enhanced security, and cost efficiency, making it suitable for small organizations, educational institutions, and personal use. Keywords Private Cloud, TrueNAS SCALE, Nextcloud, ZFS, NAS, Cloud Storage, Data Security