# Managing SAS Storage Link Speed

The Managing SAS Storage Link Speed feature lets you change the link speed between the controller and an expander or between the controller and a drive that is directly connected to the controller. All phys in a SAS port can have different link speeds or can have the same link speed. You can select a link speed setting. However, if phys in a SAS port have different link speed settings and if a phy is connected to a drive or an expander, the firmware overrides the link speed setting you have selected and instead uses the common maximum link speed among all the phys.

Perform the following steps to change the link speed.

1. In the Controller dashboard, select More Actions > Manage SAS Storage Link Speed.
   The Manage SAS Storage Link Speed Dialog dialog appears.
   - The Phy column displays the system-supported phy link values. The phy link values are from 0 through 7.

   - The Status column displays the status of the link speed.

   - The Port Number column displays the port numbers.

   - The Select Link Speed column displays the phy link speeds.
2. Select the desired link speed from the Select Link Speed field using the drop-down selector. The link speed values are MAX, 3G, 6G, or 12G.

   By default, the link speed in the controller is MAX or the value last saved by you. The 12G link speed is supported for some SAS-3 expanders.

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

Parent topic: Managing Controllers