4:15 -- When EMC first disclosed it would make a product announcement Thursday, a lot of people in the industry expected it would roll out 4-Gbit/s Clariion or Symmetrix systems.
After all, IBM, Silicon Graphics, and Sun sell 4-Gbit/s midrange systems from Engenio. Hitachi Data Systems has a 4-Gbit/s midrange array, and Hewlett-Packard is expected to add its own 4-Gbit/s midrange system soon. That appears the next logical step for EMC, too.
Now we know thats not the case. EMC CEO Joe Tucci gave enough information on the companys earnings call today to provide a good idea of whats coming, and he never mentioned 4 Gbit/s. (See EMC Makes Good on DMX-3.) EMC people publicly and privately downplays the significance of 4-Gbit/s, because end-to-end 4-Gbit/s systems wont be available until hard drives support the new bigger pipes. (See Engenio Claims 4-Gbit/s Surge.) And 4-Gbit/s Fibre Channel drives wont be available until the second half of the year.
EMCs not alone here. You can find users wondering what all the 4-Gbit/s fuss is about when theyre humming along nicely at 2 Gbit/s. Some storage admins say they could still do fine at 1 Gbit/s if they had to.
But why not 4 Gbit/s now? Theres certainly no downside, and there are two advantages even with 2-Gbit/s back-end connectivity. First, you can connect twice as many servers to a target with 4-Gbit/s switches and storage as you can with 2-Gbit/s connections.