Desktop virtualization 5-PCoIP

Author: Fan Jun Frank Fan) Sina Weibo: @ frankfan7

RDP or PCoIP, that's a question. The discussion of Display protocol was once one of the most controversial topics in VDI design. This article provides you with an in-depth understanding of PCoIP features and related considerations.

IBasic concepts:

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PCoIP: The protocol developed by Teradici (www.teradici.com. Initially used for hardware-based image acceleration and optimization. VMware View promotes this protocol and participates in development. Teradici provides hardware solutions for scenarios with extremely high image requirements. View uses PCoIP without additional hardware.

RDP:Microsoft developed a graphic display protocol for network communication many years ago. Many products that have been updated to Version8. Microsoft and Citrix depend on this protocol. VMwareView supports RDP

HostVideo decoding:The common approach in VMware View. Perform image decoding on the host.

MMR: Multimediaredirection. Different from Host Videodecoding, a media file is sent to a terminal for Rendering. This reduces network bandwidth requirements. Prerequisites:

Thin terminals must be X86 thin terminals or Repurpose PCs. They do not support Apple, Android, and ZeroClient.

MMR only supports certain media file formats, such as MPEG, WMA, MP3, AC3, and WMV.

WAN Optimization: WAN-based network optimization devices can greatly save network bandwidth in some cases. For example, Riverbed.

PCoIP

VMware recommends PCoIP for the vast majority of scenarios. Several outstanding features include:

Can be used with TeradiciAPEXCard Used Together

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For scenarios with extremely high image requirements, image encoding is usually performed by occupying a large amount of CPU resources on the host. CPU resources are limited, so there will be fewer virtual desktops on the host. If you want to run more desktops on the host, the APEX card is based on hardware encoding. You can release the CPU resources used for encoding. In addition to installing the PCIe standard APEX card on the ESXi host, you also need to install the APEX card driver on the ESXi host and the APEX driver on the desktop.

For a large VDI project, the cost of the host is greatly higher than that of the APEX card.

Note that the CPU resources are released using this card, and the data transmitted over the network will not be reduced, so the bandwidth requirements will not be reduced.

Automatic Adjustment Based on network bandwidth

If the network conditions of the user's access to the desktop change, or the user often accesses the desktop from different networks, PCoIP can automatically adjust the image quality according to the current network conditions. When the bandwidth is sufficient, You can see high-definition images. When the bandwidth is insufficient, you can still quickly display quality images without causing a long wait time.

This is a double-edged sword. PCoIP tries its best to use bandwidth to provide high-quality images, and may compete with other applications for bandwidth when accessing through the WAN. QoS is required. We recommend that you optimize it. Reference

VMware View 5 PCoIP Network Optimization Guide

3.When to use RDP?

A company's WAN network bandwidth is limited, and other key applications, such as VOIP, depend on this line, except VDI. The Riverbed network optimization device has been used and the user needs to access the virtual desktop through the WAN. The desktop needs to play full-screen HD videos. Consider RDP

Note that many specific conditions are described before RDP is recommended in the preceding scenario. Now that Riverbed is available, you do not need to invest more. After RDP is optimized by Riverbed, the bandwidth requirements can be greatly reduced. Riverbed is far less effective than RDP for PCoIP, because PCoIP is based on UDP. Because VOIP is very sensitive to latency, you need to set network QoS to ensure that RDP does not occupy excessive bandwidth. In addition, RDP and MMR can be used together to play full-screen HD videos.

References:

Planningfor PCoIP on the NetworkPC-over-IP remote display policytheace in the Hole-PCoIP Server Offload Card

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