Personal vDisk 7.x is supported on XenDesktop version 5.6 through the current version. The "System requirements" documentation for each XenDesktop version lists the supported operating systems for Virtual Delivery Agents (VDAs), and the supported versions of hosts (virtualization resources), and Provisioning Services. For details about Provisioning Services tasks, see the current Provisioning Services documentation.
You can install and then enable PvD components when you install or upgrade a VDA for Desktop OS on a machine. These actions are selected on the Additional Components and Features pages of the installation wizard, respectively. For more information, see Install VDAs.
If you update the PvD software after installing the VDA, use the PvD MSI provided on the XenApp or XenDesktop installation media.
Therefore, if you install the PvD components but do not enable them during VDA installation, you can use the same image to create both PvD desktops and non-PvD desktops, because PvD is enabled during the catalog creation process.
You add personal vDisks to hosts when you configure a Site. You can choose to use the same storage on the host for VMs and personal vDisks, or you can use different storage for personal vDisks.
The easiest way to upgrade personal vDisk from an earlier 7.x version is to simply upgrade your desktop OS VDAs to the version provided with the most recent XenDesktop version. Then, run the PvD inventory.
If you uninstall PvD and then want to reinstall the same or a newer version, first back up the registry key HKLM\Software\Citrix\personal vDisk\config, which contains environment configuration settings that might have changed. Then, after installing PvD, reset the registry values that might have changed, by comparing them with the backed-up version.