7 Replies Latest reply on Jul 31, 2009 9:28 AM by petedr

    Difference between  a VMDK disk and Virtual RDM disk

    durjay Novice

       

      I am trying to understand the difference between above two disks. From vmware documents what I found is

       

       

       

      1. The mapping. A VMDK disk is a file within a VMFS file system and a virtual RDM(.vmdk) is a mapping file to a RAW LUN(no file system).

       

      1. Usability: VMDK disks only supports cluster in a box but virtual RDM Disks supports both Cluster-in-a-Box and Cluster-Across-Box.

       

       

      If the above are the only difference between them, what is the specific scenario when to go for each of them. If there are any other difference please let me know.

       

       

      Thanks in advance

       

       

      -Durjay