the link to the Simulator you quoted is NOT the ova  The ova is the Unity VSA which you can get via www.emc.com/getunity or several other places like support.emc.com, Partner Portal, ... Besides getting the OVA you do need also reqeust a free license for it  If you still cant find it our your partner TC should be able to help you
Hi,  Is the unity simulator available for download? when going to All-Flash Storage Trial Run - EMC Unity Simulator | Dell EMC US and selecting download simulator I get the following: [URL]  uemdemo.sspg.lab.emc.com’s server IP address could not be found.  ERR_NAME_NOT_RESOLVED  any ideas?
unity simulator download