Seagate starts shipping the 2TB SAS 6.0 Gbps Constellation ES HDD
 

Seagate has now expanded its storage offer with a new Constellation ES hard drive, the first 2TB enterprise class HDD to feature a SAS (Serial Attached SCSI) 6.0 Gbps interface. Seagate's 3.5-inch drive works at 7200 RPM (rotations per minute), and boasts a MTBF (mean time before failure) of 1.2 million hours, the PowerChoice optimized power and cooling technology, 16MB of buffer memory (the SATA model has 64MB of cache), and a dual processor which enables a maximum transfer rate of 150 MB/s.
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6Gbps connection and max transfer speed of 150 Mb/s.

150Mb/s = SATA speed, the original.