Use SAN or local storage but not NFS with RDM
Unable to add a physical mode disk mapping (RDM) to a virtual machine stored on an NFS datastore
http://kb.vmware.com/kb/1001856
http://www.vmware.com/pdf/vsphere4/r40_u1/vsp_40_u1_esx_server_config.pdf
Chapter 10:
"Raw device mapping (RDM) provides a mechanism for a virtual machine to have direct access to a LUN on
the physical storage subsystem (Fibre Channel or iSCSI only). "
Hope that helps
Hanna
Hope that helps,
Hanna
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BSCS, VCP2, VCP VI3, VCP vSphere, VCP 5
https://www.ibm.com/developerworks/mydeveloperworks/blogs/vmware-support-ibm