The Advantage Of The SATA Storage Interface
Applications for eSATA include external direct attached storage for notebooks, desktops, consumer electronics and entry servers, and also support for multiple streams of content such as parallel read and write on a DVR.
Looking forward to the SATA 3.0 specification
The current SATA rev. 2.x specifications detail data transfer rates up to 3.0 Gbit/s. SATA IO presented the draft specification of SATA 6 Gbit/s physical later last year. The full 3.0 standard is anticipated to be available this year. While hard disk drives hardly saturate the 1.5 Gbps bandwidth of original SATA, a move from SATA 3 Gbps to SATA 6 Gbps will benefit the flash read speeds of ONFI drives that can reach well over 500 MB/s.
The new specification will include a few extensions to the command set, namely in the area of data and command queuing, and the enhancements are geared to improve quality of service for video streaming. The standard will support distances up to one meter. The new specification may require higher power consumption for supporting chips; however, new process technologies and power management techniques are expected to combat the potential problem. The future standard will be backward compatible with SATA 2.x specifications.
~Ben Anton, 2009
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