Managing PCIe Storage Lane Speed

A lane represents a set of differential signal pairs, one pair for transmission and one pair for reception, similar to SAS phys.

The Managing PCIe Storage Lane Speed feature allows you to change the lane speed between a controller and an expander or between the controller and a drive that is directly connected to the controller. LSA 2.4 and later versions support both SAS/SATA topologies as well as PCIe topologies using the same device phys to manage the lane speed.

Perform the following steps to change the lane speed.

  1. In the Controller dashboard, select More Actions > Manage PCIe Storage Lane Speed.
    The Manage PCIe Storage Lane Speed Dialog appears.
    Figure 1. Manage PCIe Storage Lane Speed Dialog
    • The Lane column displays the system-supported lane values.
    • The Status column displays the status of the lane.
    • The Receptacle Name column name of the receptacle.
    • The Port Number column displays the port numbers.
    • The Current Clock Mode column displays the current clock mode.
    • The Current Speed column displays the current speed.
    • The Connected Device column displays the connected device name.
  2. Select the desired lane speed from the Lane Speed field using the drop-down selector.
    The lane speed values are 2.5GT/s, 5GT/s, 8GT/s, and 16GT/s.

    By default, the lane speed in the controller is 8GT/s or the value last saved by you.

  3. Click Save.
    The lane speed value is now reset. The change takes place after you restart the system.