Industry Expert Blogs

SAS follows its own version of Moore’s law, doubling the speed every few years. Keeping up with the tradition, SAS 24G (Gen-5) was recently introduced. Let’s decode, how the effective speed has been doubled to 24G, though signaling rate remains at 22.5G. This has been achieved through a more efficient 128b/150b encoding scheme to realize a usable data rate of 24G while retaining compatibility with 6G and 12G. Additional features were also introduced to improve the overall protocol efficiency. Some of the newly added features include binary primitives, primitive parameters, SMP open priority, inter-expander fairness arbitration enhancements, … etc. In this blog we will look into some of the new features, and will continue to delve into more details in the upcoming blogs on SAS.

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