IBM 866011U Hardware Maintenance Manual - Page 127

You can set the stripe-unit size to 8 K, 16 K, 32 K, or 64 K. - When the stripe-unit size is 8 K or 16 K, the maximum number of physical drives in an array is 16. - When the stripe-unit size is 32 K or 64 K, the maximum number of physical drives in an array is eight. Rebuild Priority: The default setting is High. The rebuild priority can be set to High, Medium, or Low. - When the rebuild priority is set to High, the rebuild I/O request gets highest priority in the execution order. - When the rebuild request is set from High to Medium in a heavily loaded system, it can increase the disk rebuild time, but provide better system performance. - When the rebuild request is set from High or Medium to Low in a moderate to heavily loaded system, it can increase the disk rebuild time, but provide better system performance. Unattended Mode: The default setting is Off. You can enable the ServeRAID controller to accept changes in the configuration without user input. When unattended mode is set to Off, the program waits for user input when an event is detected. When unattended mode is set to On, the ServeRAID controller pauses briefly to permit a user to override the default action; then, the controller makes the necessary changes. Unattended mode also clears any blocked drives. This mode is useful when the server operates remotely. When unattended mode is set to On, the ServeRAID controller "chooses" an action that is equivalent to pressing one of the function keys. Note When F5 is selected, non-responding ONL and RBL drives become DDD, RDY and SBY drives become EMP, and HSP drives become DHS. F5: The server continues the startup operation after identifying a defunct drive. For example, an HSP drive failed to respond during POST. Startup continues, but the ServeRAID controller changes the state of the HSP drive to DHS. Netfinity 5500 - Type 8660 119