Specifications

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Cisco TV CDS 2.5 ISA Software Configuration Guide
OL-24788-01
Chapter 1 Product Overview
Content Delivery System Architecture
Vault
The Vault ingests content delivered over a standard interface (for example, using FTP to receive content
from a catcher), performs whatever processing is required (for example, generating trick-play files), and
stores the processed content reliably on disk. A Vault Group consists of a scalable number of Vaults that
divide the responsibility for ingest and storage among the members of the group. Vault servers can be
colocated or distributed to multiple locations across an IP or Ethernet network. Each Vault can
simultaneously ingest up to 160 channels of MPEG-2 transport stream (TS) content and store up to 6000
hours of MPEG-2 TS standard definition content with two mirrored copies of the content and one or two
trick files.
Table 1-2 High-Level Description of the TV CDS and TV VVI
Content Delivery System
Element Description
CServer The CServer is the kernel software that handles bandwidth management,
storage decisions, Real Time Streaming Protocol (RTSP) and Lightweight
Stream Control Protocol (LSCP) and stream processing on the TV Content
Delivery System.
Database The database stores information about the system, including current states
of all ingests and streams, configuration settings, and system statistics.
Some database elements are global among all servers and some are local.
For example, statistics are stored on the local server and the Content
Delivery System Manager only. States about stream objects are replicated
on all Streamer servers. The Content Delivery System Manager stores a
superset of all database elements.
Management There are two types of management:
• Content Delivery System Manager—Browser-based user interface
• SNMP agent—Network Management System (NMS) interface
Storage There are four levels of storage (or cache):
• All content is stored on the Vault server, as well as mirrored to other
Vaults.
• Requested content is stored on the Caching Nodes.
• Recently requested content, or popular content is stored on the hard
drive of the Streamer.
• Currently requested content, or popular content, is stored in the random
access memory (RAM) of the Streamer.
Event Collection The Content Delivery System Manager collects logged events for reporting
purposes as well as for third-party applications
Reports The Content Delivery System Manager provides a reporting tool to aid
performance trending and analysis of streams, popular content, bandwidth
usage, and more.