The Cost of Zimbra v. Microsoft Exchange, Revisited
Posted in Cost of Ownership (TCO), Email & Collaboration on April 29th, 2010 by The Savvy CIO – Be the first to commentSome months ago we did a breakdown of the costs of Zimbra versus Microsoft Exchange. I’ve long been negative about the costs of Exchange. The price doesn’t scale down at all for small companies, and scales up far too quickly for larger ones. But the previous breakdown was a hypothetical scenario. There’s nothing wrong with that, it’s what we all do when making a purchasing decision. But now there’s some real life data to turn to.
The University of Pennsylvania runs both Exchange and Zimbra. They have nearly 1,000 users on Exchange and over 6,200 users on Zimbra, and the same technical support team takes care of both systems and their respective user bases.
My primary complaint with Exchange is how time-intensive and difficult it is to support and maintain. Support and maintenance are entirely hidden costs at the point of purchase, and many unsuspecting buyers have been lured in with steep license discounts only to discover the ongoing costs were far more than they bargained for.
The data from Penn agrees. For Penn, supporting an Exchange user is over 9 times more time consuming than supporting a Zimbra user.
For 1,000 users, Exchange requires 3.2 full-time equivalent staff members to support. With over 6,200 users, Zimbra requires 2.2 full-time staff members to report. That’s right, 33% less time spent on support for six times the users.
When Penn analyzed the total cost of ownership for Exchange and Zimbra (licensing, hardware, maintenance, support, etc.), Exchange came out at $7.50 per user. Zimbra was under half the cost at $3.00 per user.
Adam Preset, an IT technical director at Penn, discusses their deployment: read more »


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