A cloud provider prospect asked me if we had a way of counting or aggregating the quantity of bandwidth consumed. In other words, if a prospects cloud server has downloaded 1.2GB of data and uploaded 387MB of data.... Could we somehow display this?
The simple answer is to just use a SQL query that will SUM the data collected. However, I'm not sure what you would be collecting from a server perspective (network_traffic) versus an interface perspective (interface_traffic).
Adamson is working on a very slick new portlet that tackles this type of stuff, maybe ping him directly (I'm emailing him a link to this right now...) to see what he has for you?