Compaq Infortrend manual Controller Unique Identifier

Controller firmware automatically examines the node names and port names of all the connected drives once initiated. If devices on two different drive channels appear with the same loop ID and port name, controller will consider these two drive channels as a "dual loop."

The dual loop configuration will be displayed as "channel <pair channel>." For example, channel numbers are displayed as 2<3> and 3<2> if channel 2 and channel 3 are configured as a dual loop. The data bus will be operating at the bandwidth of up to 200MB/sec (1Gbit Fibre).

Controller Unique Identifier

A Controller Unique Identifier is required for operation with the Redundant Controller Configuration. The controller will automatically notify users to enter a unique identifier when the first logical drive is being created in a dual-controller system.

The unique identifier will be used to generate a Fibre channel "node name" (WWNN). The node name is device-unique and comprised of information such as the IEEE company ID and this user- configurable identifier in the last two bytes.

In redundant mode, the controller configuration data is continuously synchronized between controllers. Host ports on both controllers appear with the identical node names and each with a different port name (WWPN). When a controller fails and a replacement is combined, the node name will be passed down to the

Fibre Operation 8-11