HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 25

Using the HP-UX System Administration Manager Managing LUNs (Logical Drives) HP-UX Setting Active Spare Rebuild Priority Auto Include Table 3. Disk Array Configuration Settings Default On High On Comments and Considerations Active Spare provides optimum protection against disk failure. Disabling Active Spare will make additional capacity available to the host, but at the expense of maintaining full data redundancy. Rebuild Priority determines how quickly a Rebuild completes. It allows you to balance the servicing of host I/Os with the rebuilding of the disk array. The same rebuild priority is used for both Auto Rebuilds and manual Rebuilds. Auto Include simplifies the task of adding a new disk to your array. Disabling it will require you to manually include each disk you install in the array. NOTE! The Rebuild type (automatic or manual) is displayed but cannot be changed using SAM. To change configuration settings: 1. Select the desired disk array controller from the list on the screen. 2. Select "Actions" on the menu bar. 3. Select "Disk Array Maintenance." 4. Select "Modify Array Configuration . . ." 5. Click setting boxes to make changes. 6. Click "OK" to effect the change, or "Cancel" to ignore. Managing LUNs (Logical Drives) An important part of managing the disk array involves defining and maintaining the optimal LUN structure for the disk array. Your system requirements will influence the LUN structure you choose. Managing LUNs is a part of the overall task of managing the disk array capacity. For more information on managing array capacity to meet your system needs, see "Managing Disk Array Capacity" in the HP SureStore E Disk Array 12H User's and Service Manual. 25