I have an HP Proliant N40L . 8 gb Ram, first HD is 320gb and second 2tb. I have installed Vsphere on the first HD and set up a datastore on it as well on which at the moment I have FreeNAS. I am new to both VMs and freeNAS so this is a steep learning curve for me. From what I have read on freeNAS I think I need to create or setup the second HD as an RDM device fro freeNAS to store data however when I try to do this in the configuration panel the option is grayed out. Vsphere sees the second Hard Drive, any hints on where I can go for help on this problem. I have read some threads from 2009 on this but as Vmware has changed so much? and I am a comparative noob they don't seem applicable to solving this on my setup. Hope someone can point me in the right direction.
RDM's are only supported with shared storage LUNs, not on direct attached storage. For a test environment you may take a look at e.g. http://www.vm-help.com/esx40i/SATA_RDMs.php to see whether this helps.
