Automatically distinguish between RDM Vmdk and vmdk file.

Hello all,

I am working on an application that customise a virtual machine. So far I was using only RDMs, which as you probably know are pointers to physical disks. However, for the RDMs, I am using raw backing structure like this one: VirtualDiskRawDiskMappingVer1BackingInfo. I know that for vmdks that are not rdms, I can use VirtualDiskFlatVer2BackingInfo.

So my question is how to distinguish between the two types is there any easy way like a struct or something else that could clearly specify that this is RDM and this is simple VMDK?

Deeply Grateful,

Stefan