Product Documentation

Layer

A layer is a virtual disk where either the software for your operating system, platform, and application software is installed, or the user’s data and settings are stored. An App Layering appliance can include the following types of layers.

The following types of layers can make up layered images:

  • OS layer, where you imstall the Windows operating system from ISO. This layer allows you to reuse the same installed OS with all compatible Platform and App layers.

  • Platform layers, where you install the components of your environment, including the software and settings for your hypervisor, provisioning service and connection broker. By creating a Platform layer for each environment, you can reuse the same OS and App layers in any environment. or example, you can use your other layers in an on-premise environment like VMware and a cloud environment like Azure.

  • App layers, where you install one or more applications on each layer.

Other layers you can use include:

  • Elastic layers, for delivering App layers directly to users outside of the layered image through an application broker. Elastic layers are App layers that are delivered at logon time rather than built into a layered image. A single App layer can be delivered either through an image, or elastically. Elastic Layers must be enabled in the image template. Also, you cannot assign the same application to the same user both as part of the layered image and elasitically.

  • User layers, where user data is persisted. A User layer can be automatically created for a user the first time the user logs into an image. The User layers setting must be enabled in the image template for User layers to be created.

Layer

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