The Enable file recovery from VM backup option does not work if a volume disk set contains a mixture of disk types
If a VM is configured on a logical volume (LVM or LDM): Individual file recovery does not work if the volume disk set contains a mixture of disk types:
Some of the logical volume disks are regular virtual disks (normal VMDKs).
Some of the disks in the same volume are independent disks or are physical disks in raw device mapping mode (RDM).
The backup job succeeds but files cannot be individually restored from the file systems that reside on the disk set (LVM or LDM). To be able to restore files individually, reconfigure the VM's logical volumes to reside on regular virtual disks (vmdk) only. Note that VMware does not make snapshots of independent disks or RDM disks.