HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 149

Using the ARM Command Line Utilities for MPE Performing Disk Array Maintenance Tasks To set the data resiliency mode, type: arraymgr -J {SingleController | Secure | Normal | HighPerformance} The data resiliency settings are described in Table 19. Setting SingleController Secure Normal HighPerformance Table 19. Data Resiliency Settings Description This setting should only be used if the disk array is operating with one controller. This suppresses the single controller warning messages that are normally generated when the disk array is operating with one controller. This setting will affect I/O performance. This is the default setting for single controller mode. Continually updates the disks with any changes in the controller maps. This is the highest level of data protection, but it may result in decreased I/O performance. Updates the maps on the disks at regular intervals (typically 4 seconds). This option offers both data protection and good performance. This is the default setting for dual controller mode. Updates the disk maps only during shutdown of the disk array. This is the lowest level of data protection, but it offers the highest level of performance. MPE 149