snydeq writes: "'Exchange killers' come and go, but InfoWorld's Eric Knorr sees VMware's new Zimbra appliance as a credible competitor for Microsoft's Exchange user base. 'The appliance option addresses the large chunk of business customers that remain wary of ceding email to the cloud. Plus, the appliance is intended to reduce switching and ownership costs by making deployment and maintenance a snap. If Zimbra can pull that off, it will certainly have a leg up on Exchange. 'The appliance runs vSphere inside, which simplifies high availability, backup, and disaster recovery. Ubuntu runs under the Zimbra Collaboration Suite, but it's essentially embedded and invisible, so no Linux skills are required. Direct comparisons are complicated but VMware claims that its appliance solution costs between 35 and 50 percent less than Exchange.'"