Chapter 1 Overview of the Content Delivery Engines
Cisco TV CDS Overview
Note The CDE100 supports
The CDE200 supports
Cisco TV CDS Overview
The Cisco TV CDS is a high performance, open architecture vehicle capable of delivering a wide range of advanced video applications. The Cisco TV CDS consists of the following elements:
•Intel Xeon architecture servers
•Linux operating system
•OnDemand software
•Video Accelerator software
OnDemand Application
In order for cable operators to successfully deliver Video On Demand (VOD) services, a number of system elements must be present and work together. The OnDemand application is a component of next generation, open architecture VOD systems. The OnDemand application delivers a highly scalable and reliable solution for ingest, storage, content distribution, personalization and streaming of OnDemand Video.
The Cisco Video On Demand solution has three major elements:
•A Vault Group consisting of one or more CDE200s or CDE400s. The Vault Group is responsible for ingest and reliable storage of Video On Demand content. The number of CDE200s or CDE400s in the Vault Group is driven by the amount of content that the Video On Demand system offers.
•One or more Streaming Groups each consisting of one or more CDE300s. The Streaming Group is responsible for the personalization and streaming of Video OnDemand in response to user requests. The number of CDE300s and Streaming Groups is determined by the number of Video On Demand streams deployed and by the topology that best suits your individual network.
•A CDSM (CDE100 or CDE200). The CDSM is used to manage the Vaults and Streamers, collect event logs, and host reporting tools.
Note In smaller systems, the CDE200 Integrated Streamer Vault (ISV) can be used, where the Vault and Streamer functionality exist in one CDE200 ISV.
Video Accelerator Software
Cisco has developed the Video Accelerator, a unique technology that facilitates the rapid movement of content between Vaults and Streamers while keeping required bandwidth to a minimum. To accomplish this, the Video Accelerator uses a form of caching across Gigabit Ethernet networks. All content is held reliably on the Vault servers and a large amount, but not all, of the content is also contained on the
Cisco Content Delivery Engine 100/200/300/400 Hardware Installation Guide
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