User guide

Compaq StorageWorks RAID Array 4000 User Guide
Use the Controller Settings screen to select the operating system and to set the
Rebuild Priority, Expand Priority, and Accelerator Ratio. Rebuild and Expand
Priority settings will not affect an idle system, but they will affect performance
on a busy system.
Figure 6-21. Controller Settings screen
The Rebuild Priority affects the amount of time the controller spends
rebuilding data after a failed drive has been replaced. Select High if rebuilding
data should take precedence over handling requests from the operating system.
Select Low if the controller should rebuild data only when it is idle.
The Expand Priority affects when the controller moves data after you have
chosen to expand the capacity of an array. Select High if expanding the array
capacity should take precedence over handling requests from the operating
system. Select Low if the controller should expand the array capacity only
when it is idle.