http://www.lsilogic.com/products/sas_hbas/index.html
- Performance
LSI Logic SAS HBAs transfer data at 3Gb/s (300MB/s) per port half-duplex. Since SAS supports concurrent upstream and downstream transmissions (full-duplex), maximum bandwidth can be as high as 6Gb/s (600 MB/s) per port. Up to four ports can be combined to create a single wide-port providing a phenomenal 1.2 GB/s of bandwidth (2.4 GB/s full duplex)...