App Volumes has two operation modes. These modes define how AppStacks and writable volumes are stored and used.
VMDK Direct Attach Operation Mode
The preferred operation mode for App Volumes. In this mode, AppStacks and writable volumes are stored within a hypervisor datastore as VMDK files and are attached to the virtual machine using standard hypervisor functionality.
VHD In-Guest Operation Mode
In this operation mode, AppStacks and writable volumes are stored on a standard Common Internet File System (CIFS) file share in VHD file format and attached to the target computer using operating system functionality.
Once you configure the hypervisor connection type or select the operation mode, you cannot change it without reinstalling the App Volumes Manager and clearing the App Volumes database.