© 2017 Harmonic Inc. All rights reserved. 16 Harmonic MediaGrid Release 4.1
Chapter 1
System Overview and Requirements
This chapter provides an overview of system components as well as system requirements. This
section includes the following topics:
About Harmonic MediaGrid
Harmonic MediaGrid Components
About Clusters, Volumes and Groups
About a Harmonic MediaGrid Stretch Cluster
Network Configuration
About a Harmonic MediaGrid Stretch Cluster
Required Information for a Windows Domain Controller
Required Information for Network Configuration
About Harmonic MediaGrid
Harmonic MediaGrid is a powerful disk storage server system specifically designed with the
needs of large file storage and access in mind. Harmonic MediaGrid boasts unique capabilities to
meet the most demanding capacity, performance and data availability requirements. The software
RAID implementation is tightly integrated into the File System delivering high performance and
fast RAID rebuilds.
Harmonic MediaGrid is configured in a single VLAN and single subnet architecture. This
configuration is designed for easier configuration, and provides faster failover response time in
the event of a Harmonic MediaGrid switch failure, ensuring data protection and reliable system
operation. Depending on the number of switches and ContentServers, failover time is reduced to
a matter of seconds.
Harmonic MediaGrid Components
A Harmonic MediaGrid system is comprised of the following components:
Network Switches
ContentDirector
ContentServer
ContentStore
ContentBridge
SystemManager
Harmonic MediaGrid File System Driver Software
Network Switches
The network switches interconnect the many components both within a rack and to the client
network. The Harmonic MediaGrid 4000 Series and 3000 Series require multi-port network
switches with both 1 GbE and 10 GbE modules.
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