HP LH4r HP NetServer FCArray Assistant - Installation and User Guide - Page 88

Chapter 4 Configuration NOTE For a Simplex controller configuration it is important to duplicate the entries on Controller 0/Port 0 and Controller 0/Port 1. See Figure 4-45. For a Dual Active controller configuration, the load should be balanced across the two controllers. In the event of a failure to either controller, the surviving controller will activate its failover port and transparently take over the workload of the failed controller. See Figure 4-46. 1. Ensure you have configured the desired number of logical drives on the RAID Controller. 2. Click the LUN Mapping tab in Manual Configuration. See Figure 4-45. ◊ The Controller-Port columns are shown or not shown depending on the current controller configuration of host ports and duplex controllers. ◊ By default these logical drives are made available to all existing host ports in the configuration. LUNs are assigned automatically in sequential order for each port. WARNING To prevent data corruption and/or data loss, assign each logical drive to a specific, individual port (not to all ports). When logical drives are available to ALL host ports, Windows NT Server will assign multiple volumes to the same physical media. 3. For each logical drive, select a LUN in the drop-down list box, which corresponds to the desired mapping. Users with Administrative access are free to alter the default settings. 4. If you want to cancel only the LUN Mapping changes, use the Restore button. 82