RDM mapping of local SATA storage for ESXi
Once you had your drives installed, SSH to your ESXi box (now even easier in vSphere 4.1) and go to the /dev/disks directory. There, if you perform a ls -l, you’ll see your drives listed:
Ignore the instances of your drives which show them as VM stores (vm1.*****). We want to look at the raw devices.