VR Zone claims Intel is having more troubles with its integrated controllers:
Intel isn't having a good year when it comes to its integrated controllers this year, first with the SATA 3Gbps issue in the 6-series chipset and now news has reached us that in the end we won't be seeing any additional SAS/SATA ports in the X79 chipset. Apparently this is because of a “quality issue” in the SCU which would've been home to the four additional SAS/SATA ports.
We're not sure what the exact problem is, but combine this with rumours of a delay of Intel's Sandy Bridge-EP server parts and it seems like the SCU issue might be affecting the server and workstation parts as well. That said, we've also spoken to motherboard manufacturers that told us that they haven't been able to replicate Intel's errata, so it remains to see what happens, as we're still about two months away from the official launch.