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OpenVZ vs Overlay2

Professional comparison and analysis to help you choose the right software solution for your needs.

OpenVZ icon
OpenVZ
Overlay2 icon
Overlay2

OpenVZ vs Overlay2: The Verdict

⚡ Summary:

OpenVZ: OpenVZ is an open source container-based virtualization platform for Linux. It allows multiple isolated virtual containers to run on a single physical server, sharing the same Linux kernel.

Overlay2: Overlay2 is a storage driver for Docker that leverages the layering filesystem of UnionFS to enable image layers and containers to share files efficiently. It improves upon the older Overlay driver with enhanced performance and stability.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature OpenVZ Overlay2
Sugggest Score — —
Category Os & Utilities Os & Utilities
Pricing Open Source —

Product Overview

OpenVZ
OpenVZ

Description: OpenVZ is an open source container-based virtualization platform for Linux. It allows multiple isolated virtual containers to run on a single physical server, sharing the same Linux kernel.

Type: software

Pricing: Open Source

Overlay2
Overlay2

Description: Overlay2 is a storage driver for Docker that leverages the layering filesystem of UnionFS to enable image layers and containers to share files efficiently. It improves upon the older Overlay driver with enhanced performance and stability.

Type: software

Key Features Comparison

OpenVZ
OpenVZ Features
  • OS-level virtualization
  • Resource isolation
  • Overcommitting of physical resources
  • Live migration of containers
  • Templates for fast deployment
Overlay2
Overlay2 Features
  • Union file system for layering Docker images
  • Efficient sharing of files between containers
  • Improved performance over older Overlay driver
  • More stable than previous storage drivers
  • Built-in garbage collection

Pros & Cons Analysis

OpenVZ
OpenVZ

Pros

  • Lightweight and efficient
  • Good performance
  • Easy to manage
  • Scalable

Cons

  • Limited customization compared to VMs
  • Less flexible than Docker
  • Lacks native live storage migration
  • Not as widely supported as other solutions
Overlay2
Overlay2

Pros

  • Faster start up of containers
  • Lower storage space usage
  • Better disk I/O performance
  • More stable overlay mount
  • Easier cleanup of unused image layers

Cons

  • Increased memory usage
  • More complexity than other storage drivers
  • Not compatible with some filesystems like Btrfs
  • Still in experimental phase, not production-ready yet

Pricing Comparison

OpenVZ
OpenVZ
  • Open Source
Overlay2
Overlay2
  • Not listed

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Learn More About Each Product

OpenVZ
OpenVZ
Reviews, pricing & alternatives →
Overlay2
Overlay2
Reviews, pricing & alternatives →

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