# E189: Why Your Backup Platform Should Be Open Source with Plakar

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Text version: https://stenobird.com/podcast/open-source-startup-podcast/e189-why-your-backup-platform-should-be-open-source-with-plakar.md
Podcast: [Open Source Startup Podcast](https://stenobird.com/podcast/open-source-startup-podcast)
Published: 2026-01-15T19:16:59+00:00
Episode link: https://podcasters.spotify.com/pod/show/ossstartuppodcast/episodes/E189-Why-Your-Backup-Platform-Should-Be-Open-Source-with-Plakar-e3dn706
Audio file: https://anchor.fm/s/3eab794c/podcast/play/114055622/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-0-15%2F34116dca-f424-46e9-2a88-2ab6eee8ca87.mp3
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Duration seconds: 2394

## Resource

Cloud providers and SaaS platforms do not guarantee data backups, leaving organizations vulnerable to data loss and ransomware. Plakar addresses this by providing an open-source, end-to-end encrypted backup platform built on an immutable storage engine.

## Highlights
- Main idea: True data security requires end-to-end encryption that allows for deduplication without compromising privacy
- Practical takeaway: Do not assume SaaS providers like Google Workspace or Office 365 handle your backups; the responsibility lies with the user
- Failure mode: Relying on cloud-only, proprietary backup solutions can lead to vendor lock-in and a lack of verifiable data integrity
- Technical insight: Using an immutable storage engine like Kloset enables secure, versioned snapshots that protect against accidental deletion or ransomware
- Strategic advice: Open-source founders must be transparent about their monetization models to maintain community trust and avoid sudden shifts to closed-source

## Topics

Open Source Software, Data Backup, End-to-end Encryption, Immutable Storage, Cloud Security, SaaS Resilience, Deduplication, Ransomware Protection

## Chapters
- 1:00 — The Origins of Plakar: The technical foundation of Plakar, rooted in advanced chunking and deduplication algorithms developed by experienced open-source contributors.
- 3:55 — The Kloset Storage Engine: An exploration of Kloset, the immutable, encrypted, and deduplicated container that serves as the core of the Plakar platform.
- 6:45 — Solving Modern Data Scale: Why legacy backup designs fail when faced with the massive, rapidly growing datasets of the modern era.
- 9:35 — The Plakar Protocol: How the protocol enables secure data transmission to service providers while maintaining user control over encryption and resilience.
- 12:45 — The Challenge of SaaS Integrations: The high cost and technical difficulty of maintaining up-to-date connectors for frequently changing SaaS APIs.
- 15:40 — Diverse Use Cases: From personal photo backups to enterprise-grade data protection, examining the variety of users currently adopting Plakar.
- 18:40 — The Mission of Open Source: The importance of educating the market on the 'shared responsibility model' and the dangers of assuming cloud-native safety.
- 21:35 — Lessons from Data Loss: Personal experiences with catastrophic data loss and how they shaped the necessity for a resilient, transparent backup system.

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## Transcript

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