I've seen similar issues with the simulator and the  VMware HW version.  When I lowered the hardware version it got better.  I can't remember off the top of my head how far back I went, but it was not on the latest.
I posed the question to my SE, and he suggested I come here. I have installed a Virtual Isilon (I guess Isilon Simulator is the correct term now), just one node so far, and on first boot I went through the setup information, then hit Commit. After committing, it formatted the drives, and immediately got stuck at    Executing script isi_firmware_versions  Running isi firmware status  It has been sitting at this point for 2 days now. This is actually the second time I have tried to deploy it. The first time it got stuck at the same point, I rebooted the node, tried again and it still got stuck, which is why I blew it away. We are running vCenter 6.0 on XtremIO. Has anyone else seen this before? Any suggestions on how to proceed?
Virtual Isilon install is not fully booting