try getting 400GB of ram in a workstation?
ever try that? Yeah, didn't think so. Also having it be non volatile helps since you can turn your computer off at night, or suffer a crash and recover quicker. Staging 400GB of data from disk is going to take a while. The cost of $2500 seems really cheap if that is for 400GB of flash, a fraction of what most of their other products cost (at last check anyways).
As for Cisco becoming one of the largest Fusion IO customers - why would they be ? I mean Dell, HP and IBM have been customers/OEMs of Fusion IO for some time - any idea where they rank on the customer list? HP, to-date, as far as I know is the only one to have OEM'd fusion IO to put on a mez card on their blades.
Obviously HP/Dell/IBM have bigger market shares in servers than Cisco..
If Dell/IBM/HP are each already more than 10% then forget this comment !