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Thoughts on Simultaneous User Pricing
For those of you who think simultaneous users is a good model for pricing, how do you go about calculating how many simultaneous users you need to license initially? Maybe it's because I do consortial negotiating on behalf of 45 libraries, but I have a hard time figuring out how to estimate how many simultaneous users will be enough. We've had a consortial gateway contract with UnCover for a number of years. We started out at 45 simultaneous users, and worried that we were underestimating the demand. After a number of years we've worked down to 30 simultaneous users, and that number seems to work. Also, with simultaneous users, if you plan to be able to accomodate seasonal peak loads, then the rest of the time you may be paying for a fair amount of simultaneous uses that are rarely used. For example, for about eight months of the year we rarely need half of the 30 UnCover simultaneous users. But when students/faculty get into the busy parts of the semester, we are glad we have licensed the 30. Has anyone ever negotiated a license that has the number of simultaneous users on a sliding scale, depending on the time of year? Finally, I am wondering what increasing use of the Web and client/server models might mean to the concept of simultaneous users? Depending on whether a system offers stateful or stateless connections, how meaningful will the simultaneous user model be in a technical sense? Bernie Sloan ************************************ Bernie Sloan Senior Library Information Systems Consultant University Office for Planning & Budgeting University of Illinois (217) 333-4895 BernieS@uillinois.edu ************************************
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