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    - WB series
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Switches (WB Series)

Basic information
Specifications

The WB Series switches are high performance, compact, and low price fibre channel switches with improved connectivity with the NEC Storage D/E series and servers.

Fiber channel switches can be used to make high-speed connections between servers and storage devices, to construct Storage Area Networks (SAN) with no SPOF (Single Point of Failure).
For example, fiber channel switches make it easy to construct systems for the following cases. (1) A server with a large amount of data, which is accessed infrequently, connected to disk devices via a small number of ports. (2) A large number of servers sharing a disk device with data which is rarely accessed simultaneously.

WB Series Configuration Example

Configuration Example 1: Expanding the ports on the server

Expanding the ports on the server

Configuration Example 2: Expanding the storage ports

Expanding the storage ports

Main functions

High-speed switching function (cut through)

Can perform simultaneous bidirectional data transmission at 2 Gbps. Data transmissions between ports are free from interference from other ports, allows simultaneous communication between n:n ports.

The maximum transmission speed is 16 Gbps for the WB3250 and 32 Gbps for the WB4100.

Concurrent operation is possible

Routing function with no Single Point of Failure

Automatic port identification means that any port can be used to build a dual configuration. This greatly simplifies system configuration, and means that paths have no SPOF (Single Point Of Failure).

no Single Point of Failure

Zoning function for data protection

Ports of the switch can be sectioned into specific zones. Access to different zones is denied by this function, limiting unnecessary data access and protecting important data.

Zoning function for data protection

Connection with HUB

Unlike a hub, our switches support multi-node /application cluster complex and allow flexible system expansion for scalability.

HUB connection

All connected devices must manage addresses.
Reset operation is necessary for every addition/deletion of nodes.
A failure affects the performance of all nodes.
With increases in the number of ports, competition between the ports increases, resulting in performance deterioration.

HUB connection

Switch connection

The switch manages addresses.
Nodes are added or removed separately for each port.
A failed port is separated from other nodes, eliminating influence on their performance.
The more ports, the higher the transfer rates.

Switch connection

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