Why I Chose a Local Solution

Cloud services like Google Drive or OneDrive have seen their prices rise, and their privacy policies can sometimes be opaque. As a security-conscious user, I needed an alternative that didn’t rely on a third party. A local backup gave me full control and speed.

The Drawbacks of Public Clouds

Frequent policy changes, extra fees for additional storage, and the possibility of account suspension were all incidents that motivated my switch to a personal server.

The Initial Trial: Copying a Simple Folder

Before diving into a full architecture, I tested copying a Windows folder to a network drive. The result was satisfactory but limited: no optimization or automatic scheduling. That’s when Kopia emerged as a more robust solution.

Why Kopia?

Kopia stands out for its simple configuration, command-line interface, and advanced deduplication capabilities. It allows backing up multiple sources to a single server without extra complexity.

Server Setup: HP t620 at €45

To host Kopia, I chose an HP t620 thin client that I purchased and upgraded for just €45. With 8 GB DDR3 RAM and a 128 GB M.2 SATA SSD, the hardware is more than sufficient. The DietPi x86 system without a graphical environment reduces memory usage to 400 MB, leaving room for data.

Simplified Docker Installation

Docker made installing Kopia almost instantaneous: one container, a few commands, and the server is ready. Configuration includes security settings (TLS), backup frequency, and destinations. Thanks to DietPi, even a novice can follow these steps.

Scheduling Multi-Device Backups

I created a script for each device (Windows, Raspberry Pi, Android) that points to the Kopia server via SSH and runs an incremental backup. Each backup keeps only changes since the last copy, optimizing space.

  • Windows Backup: Documents, Scripts, Photos
  • Raspberry Pi Backup: Docker files, configurations
  • Android Backup: photos and videos via a dedicated app

The Impact of Deduplication on Storage

Kopia’s deduplication compares data blocks to avoid duplicates. On my server, it reduced SSD usage to 35 % of total space, saving over 40 GB compared to a raw copy.

“Kopia allowed me to save space while keeping my data accessible and secure.” — Satisfied User

Conclusion and Call to Action

By consolidating all backups on a single Kopia server, I achieved a reliable, economical solution entirely under my control. If you want to avoid the rising costs of cloud services while benefiting from advanced deduplication, Kopia is the answer.

Set up your own server today and start backing up your data without compromise. Visit Kopia’s official site to download the latest version and explore detailed guides.

Original source
Xda-developers
I backed up every device in my house to one Kopia server, and deduplication saved more space than I expected
https://www.xda-developers.com/all-my-devices-back-up-to-one-kopia-server-with-deduplication/ →