HP StorageWorks MSA2012i HP StorageWorks 2000 Modular Smart Array Reference Gu - Page 41
Configuring FC Host Port Interconnects, Click Save And Continue.
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■ 0-125 - Select a specific number if you want the loop ID to stay the same after you power down and power up. SMU cannot determine which loop IDs are available. If the controller cannot get the specified loop ID during the loop initialization process, it tries to get a soft address. 4. Click Save And Continue. A message informs you that the new values will be requested the next time the controller is restarted. 5. Click OK. When processing is complete, the main Host Port Configuration page is displayed. 6. To see the current and pending values, redisplay the Change FC Loop ID page. 7. Restart the affected RAID controllers as described in "Restarting a Controller" on page 61. Configuring FC Host Port Interconnects In an FC storage system, the host port interconnects act as an internal switch to provide data-path redundancy. When the host port interconnects are enabled, port 0 on each controller is crossconnected to port 1 on the other controller. This provides redundancy in the event of failover by making volumes owned by either controller accessible from either controller. When the host port interconnects are disabled, volumes owned by a controller are accessible from its host ports only. This is the default. For a single-controller FC system, host port interconnects are always disabled. For a dual-controller FC system in a direct attach configuration, host port interconnects are typically enabled - except in configurations where fault tolerance is not required and the highest performance is required. For a dual-controller FC system in a switch attach configuration, host port interconnects are always disabled. You cannot enable host port interconnects if any host port is set to point-to-point topology. Chapter 2 Configuring Your System for the First Time 41