HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 40

HP-UX Using the ARM Command Line Utilities for HP-UX Displaying Disk Array Serial Numbers Displaying Disk Array Serial Numbers The serial numbers of all disk arrays connected to the host can be displayed by typing: arraydsp -i Missing Disk Arrays? If you know there are disk arrays connected to the host but they are not displayed in response to the arraydsp command, check the following: • Make sure all disk arrays are properly connected to the host. This includes proper termination of the SCSI bus. • Make sure all disk arrays are turned on and operating properly. • Make sure the ARMServer process is running. ARMServer must be running to execute this or any other ARM command. You can easily check to see if the ARMServer process is running using the following command: -ps ef | grep ARM • Rescan for disk arrays by typing: arraydsp -R. This will update the ARMServer information to reflect the current system configuration. • Execute the ioscan -fn -C disk command and ensure that the software state for all active disk arrays is "CLAIMED". Changing Disk Array Configuration Settings A number of configuration settings control the operation of the disk array. These settings are usually established during installation and once set, should rarely need to be changed. The default settings have been selected to provide the best operation for most systems. However, if you determine that any setting does not meet your needs, you can easily change it. Table 5 lists the various settings, including factors you may want to consider when changing them. 40