The Horizon FLEX environment includes system requirements for both the Horizon FLEX server and the Mirage server.

Horizon FLEX Server System Requirements

  • Minimum CPU: 1 Quad-Core Processor or 2 vCPU

  • 2.26 GHz Intel core speed or equivalent

  • Minimum RAM: 512 MB with 4 GB recommended

  • Minimum disk space: 10 GB+, 40 GB+ recommended


    Horizon FLEX does not require the MongoDB database, so the additional storage is not required. When installing the Mirage server, disregard the prompt and click Next.

  • Windows Server 2008 R2, Windows Server 2012 or later

  • .NET 4.5.1 and later

  • IIS 7.0+ with II6 Management Compatibility, with ASP and ASP.NET

  • Active Directory: Administrator account with permissions to add computer objects to the domain (required only if Horizon FLEX virtual machines will join the domain)

  • Any of the following Microsoft SQL server versions (required for Mirage installation).

    • Microsoft SQL server 2008 64-bit R2 Express, Standard or Enterprise edition

    • Microsoft SQL server 2012 64-bit SP1 Express, Standard or Enterprise edition

    • Microsoft SQL server 2014 64-bit Express, Standard or Enterprise edition


    To optimize the scalability and performance of the Microsoft SQL server, use the Enterprise edition.

  • HTTP file share or IIS virtual directory with available space for source virtual machines

  • Firewall ports for the Horizon FLEX Admin Console

    • IIS and Horizon FLEX Web App default ports: HTTP - 7080, HTTPS - 7443 (Calls directed to the HTTP port are redirected to the HTTPS port.)

    • Mirage Management Server listens to Windows Communication Foundation (WCF) requests on the following port: HTTP - 8443

  • A certificate is required for the Horizon FLEX Server.

Mirage Server Requirements

  • Minimum CPU: 4 vCPU with 8 vCPU recommended

  • Minimum RAM: 8 GB with 16 GB recommended

  • 250 GB free disk space

  • Windows 2008 R2, Windows 2012 or later

  • .NET 4.5.1 and later