I just posted the below message, but it disappeared from this thread (someone deleted it?).  Using the A01 revision of the custom ISO fixed my issue.  I am not trying to install ESXi on the shared storage, but rather on the IDSDM module, which is supported.  It's working great now. I do wish there was support for XenServer, it shouldn't be that hard if a driver already exists for VMware. Previously posted: I think I have answered my own question.  It looks like VRTX supports starts in the DELL custom VMware ISO A01, I was using A00.  I'm loading A01 right now so hopefully that will work.  From Dell: Pre-requisites The PowerEdge VRTX blades support Dell customized version of VMware ESXi 5.1 Update1 only at its RTS. The image is downloadable from Dell support page. Note that the support starts from A01 revision onwards. 
We are trying to deploy VMware ESXi on the new DELL VRTX shared infrastructure platform and are running into some problems with the shared storage setup.  No matter what I try I cannot get the blade servers to recognize any shared storage. I have gone over every single BIOS & iDRAC setting that exists, everything seems proper.  In addition to trying VMware, I have also tried to attach a virtual disk to see if I can install Windows through the OS Deploy within the Lifecycle Controller.  The OS deploy won't even start as it complains there is no RAID controller or disk available to install to. I also have an error message under the blade server iDRAC storage settings.   DELL support didn't seem to have any ideas after spending a few hours with them this morning.  I have attached relevant screenshots as well, hopefully someone has an idea? This is the guide I was using: [URL]  [IMAGE][IMAGE][IMAGE]
VRTX & PowerEdge M520 storage not working