### Prepare Citrix XenServer for Parallels RAS Before you set up your environment, please make sure that your XenCenter can connect to your Citrix XenServer. A guest operating system (Windows) must be created on the Citrix XenServer which features an RDP server. Important: Ideally, the guest VM name should be the same as the computer name. Please install XenServer tools in the guest OS. After the guest OS installation is complete, make sure that the RDP server is started. To confirm that the server is running, launch a Remote Desktop Client and connect to the guest operating system using the computer name (of the guest OS) and the RDP port (default RDP port is 3389). Setting up the RAS VDI Agent Appliance for Citrix XenServer The RAS VDI Agent Appliance for Citrix XenServer can be downloaded from the following location: `http://download.parallels.com/ras/v15.5/RAS_VDI_Appliance.ova` Once the RAS VDI Agent Appliance is downloaded, it must be installed on a server. To install the appliance: Extract the ZIP file contents into a temporary directory. Open XenCenter. Right click on the host and choose Import. Choose the OVA file extracted from step 1. Choose the storage location and click Next. Configure the network settings and click Next. Choose not to use Operating System Fixup. Select the network for importing the appliance and click Next. Click Finish and wait for the import job to complete. The network administrator should assign a fixed IP address to the appliance. When using DHCP, take note of the MAC address assigned to the appliance and add a DHCP reservation. If DHCP isn't available, a static IP address needs to be configured manually. Network settings can be changed by going to the Advanced > Networking menu.