: Based on the FreeBSD operating system, FreeNAS offers a robust and secure storage solution. It supports various file sharing protocols and has features like data deduplication, encryption, and snapshots. Being open-source, FreeNAS is free to download and use.

When downloading any software or operating system for a NAS device, it's crucial to consider security. Ensure that downloads are from official or reputable sources to avoid malware. Regularly updating the NAS operating system and installed packages is also vital for maintaining security and performance.

If you meant something else by "nas it was written zip free download 2021" (e.g., a fan-made project, a documentary, or a remix album), please clarify, and I’ll try to guide you to legal sources for that specific content.

It was a chilly autumn evening in 2021 when Alex stumbled upon a treasure trove. A friend had whispered to him about a legendary hip-hop album that had been making waves back in the day - "It Was Written" by Nas. Released in 1996, this album was a masterpiece, a cornerstone of East Coast hip-hop.