Thin client

A thin client (terminal) is a compact, inexpensive client device with minimal own computing power, designed for connecting to a centralized server infrastructure of virtual desktops (VDI — Virtual Desktop Infrastructure). The main task of a thin client is to provide the user with access to the desktop, applications and data that are executed and stored on a remote server or in a data center. A thin client has no hard disk, powerful processor and large amount of RAM — all it needs is an entry-level processor (often ARM or x86 architecture with low power consumption), a small amount of built-in flash memory for storing the built-in operating system (Windows IoT, Linux, ThinOS), a network adapter (1GbE or Wi-Fi) and ports for connecting monitors (DisplayPort, HDMI, VGA), keyboard and mouse (USB). In fact, a thin client works as a terminal, transmitting keyboard and mouse input to the server and receiving back a compressed video image of the desktop using PCoIP, HDX, RDP, SPICE or Blast Extreme protocols.

Advantages of using thin clients over PCs

Using thin clients gives organizations significant advantages. Security: data is not stored on the user's device, so in case of loss, theft or infection of a thin client, confidential information will not be compromised. All data is located in a secure data center, where centralized policies of backup, antivirus protection, encryption and access control are applied. Simplified administration: the system administrator does not need to maintain hundreds of disparate PCs with different configurations — all updates, software installation, policy configuration and troubleshooting are performed centrally on VDI servers. Durability: thin clients have no moving parts (fans, hard disks), which makes them extremely reliable — the average service life is 7-10 years versus 3-5 years for PCs, and the failure rate is 3-5 times lower. Cost-effectiveness: thin clients consume significantly less electricity (5-20 W versus 100-300 W for PCs), which with a fleet of several hundred devices gives significant savings on electricity. Recycling: old thin clients are easier to dispose of due to the absence of toxic components and batteries.

Application scenarios and VDI architecture

Thin clients are optimal for organizing workplaces of employees whose activities are related to work in corporate information systems (ERP, CRM, document flow), call centers, bank branches, medical institutions, training classes, state institutions and production workshops, where protection of equipment from dust and vibrations is required. The VDI architecture includes: a Connection Broker that directs the user to a suitable virtual machine; a hypervisor on which virtual desktops run; data center infrastructure for storing images and data; a remote access gateway for secure connection from external networks. In Russian practice, a secure automated workplace can be organized on the basis of a thin client connected to server infrastructure using cryptographic protection tools (CIPF, VPN) and two-factor authentication systems. This solution is especially relevant for state information systems working with personal data and restricted access information (confidential information, commercial secrets).

Thin clients and import substitution

The Russian market offers domestic thin clients based on Russian processors (Elbrus, Baikal) and operating systems (Astra Linux, RED OS, ALT Linux). Such devices are included in the register of domestic radio-electronic products and fully comply with import substitution requirements for state and municipal customers. The total cost of ownership (TCO) of a thin client fleet is significantly lower than that of an equivalent number of PCs, especially given the longer service life, minimal administration costs and low power consumption. When choosing between thin clients and PCs, it is necessary to take into account the nature of the tasks being solved: for resource-intensive applications (CAD, 3D modeling, video editing), full-fledged workstations or the use of GPU virtualization technology (vGPU, GPU passthrough) may be required. The Fintech company helps customers design and implement VDI infrastructure, select optimal devices, perform installation and configuration, and also provide subsequent support.