The World's Fastest Storage : solid state disks (RAM-based storage)



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RamSan-320
The World's Fastest Storage

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Connectivity

The RamSan-320 uses Fibre Channel interfaces to directly connect to up to eight host devices and to storage networks for connection to a virtually unlimited number of devices.

Our newest Fibre Channel interface is the FC-65. Each FC-65 includes two 2Gbit Optical (LC) Fibre Channel interface ports. The FC-65 supports both 2Gbit and 1Gbit devices and auto-negotiates to operate in the proper mode. The RamSan-320 can support up to four FC-65s in a single chassis. All eight ports can be active, or it is possible to have pairs of FC-65 controllers in an active:passive configuration. In this configuration, one controller (both ports) is active and the other controller is passive. In the event of a link, port, or controller failure, the other controller takes over. This approach requires a switch. The FC-65 supports all three of the topologies available under the Fibre Channel protocol:

1. Point-to-point. The RamSan-320 properly implements the point-to-point (n-port to n-port) topology for Fibre Channel. Through the point-to-point topology, the RamSan-320 can be directly attached to up to eight host servers. Point-to-point connections are faster than the other methods for attaching storage.

2. Switched Fabric. The most popular way to attach a RamSan-320 is with the switched fabric topology. The switched fabric topology implies that there is a storage network switch (such as those from Brocade and McData) between the host and the RamSan-320. Switched fabric topologies can be used to provide unparalleled scalability and redundancy for storage networking. Because Fibre Channel switches tend to add very little latency to storage transactions, the switched fabric topology is still an excellent choice for high performance storage.

3. Arbitrated Loop. In many ways, arbitrated loop is the legacy topology for Fibre Channel. Arbitrated loop operates very similar to the old token ring local area networks and tends to be somewhat slower than the other topologies. In addition, arbitrated loop can support far fewer devices than the switched fabric topology. This functionality allows the RamSan-320 to be connected directly to host bus adapters and storage devices that work best with arbitrated loop. The RamSan-320 will also work when connected to a private arbitrated loop hub.


RamSan-320 Resources

Test Drive The Browser Configuration Utility

Flash Presentation

RamSan-320 Education (PDF)
RamSan-320 Datasheet (PDF)
Free White Papers
Hot File Detection Software
User Guide (PDF)

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