12.10.8 Setting the PCIe Maximum Read Request Size

PCIe Maximum Read Request Size allows optimization of data flow to improve the controller performance. This option is used to change the PCIe Maximum Read Request Size value on your Adaptec Smart Storage Controller.

The PCIe Maximum Read Request Size takes one of the following values (default): 128, 256, 512, 1024, or 2048 Bytes. The default value setting refers to the server's Maximum Read Request Size.

The system must be restarted for the PCIe Maximum Read Request Size to take effect.

To change the PCIe Maximum Read Request Size on a controller:
  1. In the Enterprise View, select a controller.
  2. On the ribbon, in the Controller group, click Set Properties.

    The General tab on the Set Properties window opens.

  3. Select the PCIe Maximum Read Request Size value from the drop-down list.

  4. Click OK.
  5. Reboot the server.

The value of the PCIe Active and Pending Maximum Read Request Size gets displayed under the Properties tab of the controller.

PCIe Maximum Payload Size
The PCIe Maximum Payload Size is the maximum size of PCIe payload for one transfer. The PCIe Maximum Payload Size reports the values as 128, 256, or 512 bytes and gets displayed under Properties tab of controller.
Note: The value of PCIe Maximum Payload Size cannot be changed from the maxView GUI.