Veeam

Design, Don’t Guess: Scaling Veeam Infrastructure with Veeam_Designer v3.1.0

Eric Black

02 Mar 2026 — 1 min read

I recently shipped v3.1.0 of Veeam_Designer, and I wanted to share how this project has evolved. What started as a personal tool to avoid juggling messy spreadsheets and vendor calculators has grown into a comprehensive platform for sizing and architecting Veeam environments.

The philosophy behind the tool is simple: You describe your backup environment in a YAML file (or via the web form), and the tool produces a full infrastructure blueprint.

What Veeam_Designer Delivers

This isn't just a basic storage calculator. It’s a full-stack design engine that handles:

Core Infrastructure: Repository sizing, proxy counts, transport mode selection, and SOBR layout.
Advanced Features: Replication and CDP sizing, NAS file proxies, WAN accelerators, and LTO tape libraries.
Business Logic: 3-year TCO with multi-cloud comparisons and Veeam VUL license estimation.
Compliance & Risk: Risk scoring and compliance gap analysis for HIPAA, SOC 2, GDPR, PCI DSS, and DORA.
Portability: It exports a self-contained HTML report that you can hand to a stakeholder or manager with zero dependencies required.

Integrity Matters: The v3.1.0 Update

As this tool moved toward a public release, I conducted a full code review that caught four critical math errors. In the spirit of "Engineering over Marketing," I wanted to be transparent about those fixes in this version:

Replication Change Rates: Fixed a bug where daily change rates were hardcoded, ignoring user input.
WAN Acceleration: Corrected a unit conversion bug in the BCJ window calculation that was off by 1024x.
Replica Storage: Fixed an inverted formula that incorrectly made compressed replicas appear larger than uncompressed ones.
Unit Consistency: Standardized math across all modules to ensure "what you see is what you get."

Open Source & Extensible

The entire project is MIT licensed. It’s built to fit into modern workflows, featuring a REST API for embedding into other tooling and official Docker images for easy deployment.

If you work with Veeam environments at any scale, I’d love to know if this helps simplify your design phase.

Get Started with the Project:

GitHub:https://github.com/eblackrps/Veeam_Designer
Docker: docker pull emb079/veeam-designer

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