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About Omneon MediaGrid - Harmonic Inc

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• Cluster, in the context of an <strong>Omneon</strong> <strong>MediaGrid</strong>, refers to a collection of one or more Volumes<br />

and their associated ContentDirectors and ContentServers within an <strong>Omneon</strong> <strong>MediaGrid</strong>.<br />

• The ContentDirector is the device that manages operation of the <strong>Omneon</strong> <strong>MediaGrid</strong>, including<br />

load balancing. It is the primary point of contact for clients and determines the ContentServer<br />

availability.<br />

• The ContentBridge is an optional device that provides standard interfaces to the <strong>Omneon</strong><br />

<strong>MediaGrid</strong> for clients that do not have the <strong>Omneon</strong> <strong>MediaGrid</strong> File System Driver (FSD)<br />

installed, or where an FSD is not available. The supported protocols are AFP, CIFS, FTP, and<br />

NFS.<br />

• The ContentServer provides storage capacity for holding user data, processing for file serving<br />

functions, and network bandwidth for client access. ContentServers can be used to manage<br />

ContentStores, which provide additional storage.<br />

• The ContentStore is a storage device, which can be connected to a ContentServer to provide<br />

additional storage bandwidth and capacity for holding user data.<br />

• A ContentServer Controller is the node within a ContentStore which performs processing for<br />

file serving functions. If one controller is down, the second controller takes over the processes.<br />

• CX4 is a copper-based interface cable used to connect the Network Switches. The 10GbE<br />

connections use CX4 and multi-mode fiber cables. These cables have a limit of 15 meters.<br />

• A Domain is a group of computers running the same Windows operating system that also share<br />

the same directories. Refer to Domain Controller.<br />

• A Domain Controller is the server that responds to authentication requests and manages access<br />

to resources within a Windows domain.<br />

• A File system is a way of storing data, making the data accessible to client computers.<br />

• FSD (File System Driver) is software installed on a client platform to allow standard file system<br />

access to the <strong>Omneon</strong> <strong>MediaGrid</strong>.<br />

• FTP (File Transfer Protocol) is an interface used by a computer user to exchange files between<br />

computers. Refer to ContentBridge.<br />

• Group, in the context of an <strong>Omneon</strong> <strong>MediaGrid</strong>, refers to a collection of one or more<br />

ContentServers in an <strong>Omneon</strong> <strong>MediaGrid</strong>.<br />

• NFS (Network File System) is a protocol that allows access to files from a client computer over<br />

a network.<br />

• A Slice is a segment of a file. Each file splits into one or more slices when stored, with each slice<br />

stored on a different ContentServer. Each slice carries information indicating to which file and<br />

where in that file it belongs.<br />

• A Stretch Cluster is a cluster on a ContentServer 3000 series system stretched across two sites,<br />

which uses replication to provide an additional level of data protection. For details, refer to<br />

Configuring a Stretch Cluster.<br />

• A Subnet is a smaller network within a network.<br />

<strong>Omneon</strong>, Now Part of <strong>Harmonic</strong> 3

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