Time will tell
Cisco's MDS has been dead in the water for a few years now as they pursued a rather single handed mission to build a market around a non existent connectivity "solution" in FCOE. I will make a prediction that in line with every previous iteration of the MDS family, this is not anywhere near as performant as they claim, horrendous to manage, disgustingly power hungry and remarkably inefficient in the context of emissions - the last generation was up to 4x WORSE than the competing products just in heat emission alone so it is difficult to see how Cisco can reengineer a product that inefficient and make it even close to the Brocade offerings which have always had a considerable upper hand.
This is effectively a massive climb down by Cisco yet I have no doubt that it will be perceived as a degree in virtuosity and fulfilling customer demand that is unprecedented in any area of trade, commerce and product design Oh, hold on, is that me just being a tad cynical about Cisco's marketing machine? Still, I am surprised by Brocade's rather weak response that this new MDS product is effectively the same as their 16gb products despite their significant time to market advantages........