User guide

6-26 Compaq Smart Array 431 Controller User Guide
Logical Drive Buttons
This box is located on the right side under the Array box. It becomes active
after you select a logical drive in the Configuration View list box.
Figure 6-21. Logical Drive buttons
Controller Settings Screen
In this screen, select the operating system and set the Rebuild Priority. Rebuild
Priority selections have no impact on an “idle” system but will effect
performance on a “busy” system.
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.
The Accelerator Ratio shows the amounts of read and write cache available on
the controller. On the Smart Array 431 Controller, there is no write cache, only
read cache. The ratio will always be 100% Read / 0% Write.