HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 246

Using the ARM Command Line Utilities for Windows NT Changing Disk Array Configuration Settings 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 28 lists the various settings, including factors you may want to consider before changing them. Table 28. arraymgr Disk Array Configuration Settings Setting Active Spare Auto Rebuild Auto Include Rebuild Priority Default On On On High Command Option -h -a -i -p Comments and Considerations Active Hot Spare provides optimum protection against disk failure. Disabling Active Hot Spare will make additional capacity available to the host, but at the expense of not maintaining full data redundancy. Auto Rebuild provides optimum protection against disk failure by rebuilding a failed disk as quickly as possible. Disabling Auto Rebuild gives you more control over the rebuild process, but it can leave the disk array vulnerable to a second disk failure until a rebuild is performed manually. Auto Include simplifies the task of adding a new disk to your array. Disabling it will require you manually to include each disk you install in the array. Rebuild priority determines how quickly a rebuild operation will complete. To change Active Spare, Auto Rebuild, or Auto Include settings, type: arraymgr { -h | -a | -i } { on|off } To change Rebuild Priority setting, type: arraymgr -p { high|low } Windows NT 246