> For the complete documentation index, see [llms.txt](https://docs.vergeos-demo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vergeos-demo.com/learn-the-platform/module-1-architecture-fundamentals/01-architecture.md).

# Overview

## Learning Objectives

By the end of this module, you will be able to:

* **Describe what VergeOS is** and how its unified operating system approach differs from traditional 3-tier infrastructure and other HCI platforms
* **Compare HCI and UCI deployment models** and recommend the right topology for a given use case
* **Explain VergeFS (vSAN) storage** including tier architecture, data distribution, and redundancy mechanisms
* **Describe the core fabric network** and how inter-node communication, vSAN replication, and VM live migration traffic flow
* **Identify VergeOS node types and cluster concepts** including controller nodes, scale-out nodes, compute-only, and storage-only roles

## Prerequisites

None -- this is the first module in the training program. No prior VergeOS experience is required.

## Estimated Time

**2 hours** (1.5 hours reading + 0.5 hours lab)

## Topics

* [**What is VergeOS?**](/learn-the-platform/module-1-architecture-fundamentals/01-vergeos-overview.md) — The unified ultraconverged operating system: VergeHV (compute), VergeFS (storage), and VergeFabric (networking) in a single platform. How it compares to VMware, Nutanix, and traditional infrastructure.
* [**HCI vs UCI**](/learn-the-platform/module-1-architecture-fundamentals/02-hci-vs-uci.md) — Two deployment models for different scaling needs. Hyperconverged (HCI) scales compute and storage together; Ultra Converged (UCI) scales them independently with specialized node types.
* [**vSAN & VergeFS Storage**](/learn-the-platform/module-1-architecture-fundamentals/03-vsan-vergefs.md) — Software-defined distributed storage with tiered drives (Tier 0 for metadata, Tiers 1–5 for workload data), global deduplication, and self-healing redundancy.
* [**Core Fabric & Networking**](/learn-the-platform/module-1-architecture-fundamentals/04-core-fabric.md) — The private inter-node mesh that carries vSAN replication, cluster coordination, and live migration traffic. Dual-switch redundancy and jumbo frame requirements.
* [**Clusters & Node Types**](/learn-the-platform/module-1-architecture-fundamentals/05-clusters-nodes.md) — How VergeOS organizes nodes into clusters with distinct roles: controller, scale-out, compute-only, and storage-only.
* [**Lab: Explore the Architecture**](/learn-the-platform/module-1-architecture-fundamentals/lab.md) — Hands-on exploration of the VergeOS Terraform playground to trace deployment topologies, examine infrastructure-as-code patterns, and design a deployment for a customer scenario.


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