Managing Link speed

The Managing Link Speed feature allows you to 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 Link Speed.

The Manage Link Speed dialog appears.

The SAS Address column displays the SAS address that uniquely identifies a device in the SAS domain.

The Phy column displays the system-supported phy link values. The phy link values are from 0 through 7.

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,1.5G, 3G, 6G, or 12G.

NOTE  By default, the link speed in the controller is MAX or the value last saved by you.

NOTE  The 12G link speed is supported for some LSISAS-3 expanders.

3.	Click Save.

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