Traditionally, IO interface roadmaps have stayed their own predictable path and stayed separate from each other for several generations and many years. After the converged Camelot of many 10G cables XFP COPPER interfaces and links, many IO roadmaps are radically changing data rate progression and are often converging and competing with several other IO communities’ next generation standards.The InfiniBand Trade Association formally introduced their new IO interface roadmap just a few weeks ago and it is quite different from their last revision. The older one had progressed predictability uniform from 2.5G to 5G to 10G cables data rates which have been implemented thru standards, plugfests and products. But now the next logical data rates of 20G and 40G per pair have disappeared off the new roadmap revision.
FibreChannel 16G and SAS 12G interfaces may be merged into one chip and will likely be used with converged next generation FC/SAS SSDs, (Solid State Drives) which are mounted on blades or modules. FibreChannel and 10G cables interfaces are sometimes merged into one chip with two SFP+ ports and support converged LAN/SAN systems. So one wonders if there will be Unified SFP+ 16G and or SFP+ 28G link next generation Unified systems.Ethernet IEEE-802.3bg 40G optical single lane link specification development is moving right along and is allegedly looking to expand beyond the long reach applications. It appears that the Call of Interest for a new 4x25G=100 electrical Ethernet connectivity spec and QSFP+ copper and active optical PMD will occur at the November 2010 plenary meeting. Ethernet Alliance business leaders are planning to talk about a new roadmap at the October meeting that may include 400G and 1T interfaces. So much for the Ethernet older orderly by ten data rate progress that did 10Mbs, 100Mbs, 1000Mbs 10G cables …
No comments:
Post a Comment