One of the following screens will appear:
- If the configuration program detects unconfigured
ServeRAID controllers, the program starts in the Configuration mode and
a screen similar to the following appears.
Select the Cancel button to switch from the Configuration mode to the Information mode. - If the configuration program detects that all
ServeRAID adapters and controllers in the server are configured, the
program starts in the Information mode and a screen similar to the
following appears.
Select the
icon on the Tool Bar to switch from the Information mode to the Configuration mode.
This choice is available in the Information mode only. When read-ahead cache is set to Enabled (default setting), the ServeRAID controller transfers data from a disk to its local cache in increments equal to the stripe unit size. This provides excellent overall performance when workloads are steady and sequential.
However, if the workload is random or the system I/O requests are smaller than the stripe unit size, reading ahead to the end of the stripe might degrade performance. When read-ahead cache is set to Disabled , the ServeRAID controller transfers data from a disk to local cache in increments equal to the system I/O request size, without reading ahead to the end of the stripe.
This choice is available in the Information mode only. You can select this choice to set the priority for Rebuild operations to High (default), Medium , or Low .
- When the rebuild rate is set to High , the rebuild I/O request gets high priority in the execution order.
- When the rebuild request is set from High to Medium in a heavily-loaded system, it can increase the rebuild time, but provide better system performance.
- When the rebuild request is set from High or Medium to Low in a moderately- to heavily-loaded system, it can increase the disk rebuild time, but provides better system performance.
