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.