HP BL260c Citrix XenDesktop architecture and implementation on ProLiant server - Page 10
HP thin clients - manual
UPC - 883585668663
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• License server - A component that validates licenses for Desktop Delivery Controller and Provisioning Server. It is installed simultaneously with Desktop Delivery Controller. • Citrix Desktop Receiver - Software running on an endpoint that enables the device to connect to a virtual Windows XP or Vista desktop running on a server. • Independent Computing Architecture (ICA) protocol - A communications protocol used between endpoints and the virtual desktops. With ICA, all desktop logic executes on the desktop host. Only screen updates, mouse clicks, and keystrokes are transmitted to the user's computer (endpoints). • XenDesktop Setup wizard - A wizard that automates parts of the creation, delivery, and maintenance of large virtual desktop installations. This wizard integrates Citrix components so that system administrators can quickly create multiple desktops. • XenServer Tools - Tools that provide custom Windows drivers and a management agent. XenDesktop additional components Additional XenDesktop components provide the following features: • Secure delivery - When users connect from outside the corporate firewall, XenDesktop can use Citrix Access Gateway technology to secure these connections with secure sockets layer (SSL). Access Gateway is a hardened SSL virtual private network (VPN) appliance that is deployed in the de-militarized zone (DMZ)1 to provide a single secure point of access through the corporate firewall. • Client-side application virtualization - Also known as streaming, this component enables applications to be delivered and run in a protected, virtual environment on client devices. Applications are first packaged by recording their installation profile and determining what is required for streamed operation. The resulting package is stored on a file share and then downloaded to users as required. The package is cached on the local device where it runs locally. Normally this in isolation from other applications and processes running on the endpoint. • Server-side application virtualization - Also known as presentation virtualization, this component separates an application's user interface from its program logic, enabling the user interface to be used remotely while the program logic runs on the server. The server encrypts and sends to the endpoint any changes to the user interface while the user's input is returned to the server for processing. HP thin clients Thin clients are at the heart of HP's remote client portfolio of desktop virtualization solutions. Desktop and mobile thin clients are solid-state devices that connect over a network to a centralized server where all processing and storage takes place, providing reduced maintenance costs, minimal application updates, higher security levels, and greater energy efficiency. Users can access XenDesktop using the following thin client options: • Program Neighborhood Agent (PN Agent): Using the Program Neighborhood Agent in conjunction with the Web Interface, users can manually launch their XenDesktop session from their desktop. • Web Client (Browser): The Web Client is used with the Browser Mode. The Web Client enables users to access the XenDesktop group from within a familiar browser environment. • Desktop Appliance (DA): Desktop Appliance leverages existing devices and is designed to deliver a full desktop experience when connecting to Citrix's XenDesktop. This mode automatically launches XenDesktop immediately after powering on. 1 In many sites, a secure network area that sits between the corporate servers and the Internet is referred to as the DMZ. It is usually separated by firewalls that restrict traffic flow between the corporate servers and the Internet. 10