Although I haven't tested
this, I believe that a 4x cable will not give you any benefit over a
1x cable - SATA is only 1-phy.


SATA drives are single-ported, while some SAS drives are dual-ported.
However, there are no quad-port SAS drives so why the 4x cable?

I don't think the correlation is between SAS lanes and ports on the
drive.

Ryan