A: VMware's vSphere Storage Appliance (VSA) is a new product, released at the same time as vSphere 5.0, that's intended to provide an alternative virtual infrastructure for IT environments that don't have a SAN. As an appliance, VMware recommends installing this product onto hosts that are essentially unconfigured.

One component of the VSA's installation checks to see if each host can be a part of the same cluster that has VMware Enhanced vMotion Compatibility (EVC) turned on. Although this verification is extremely important for production environments, EVC isn't supported when evaluating the VSA's software atop VMware Workstation. As a result, a slight hack is required to disable the EVC verification.

To disable the EVC check, navigate to C:\Program Files\VMware\Infrastructure\tomcat\webapps\VSAManager\WEB-INF\classes and open the file titled dev.properties. Modify the line evc.config=true to evc.config=false.
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