AhsayOBM: 184.108.40.206 or above
When performing a guest VM restore on a VMware ESXi host, the following warning message is received, and the guest VM is not restored:
|*||warn||YYYY/MM/DD hh:mm:ss||"Delta disk format of virtual disks is not supported by datastore."|
This issue can occur if the guest virtual machine was originally backed up from a VMware ESXi host with a datastore of a different VMFS version.
For example, the backup of the virtual machine was done on a VMWare ESXi host with a VMFS5 datastore in VDDK backup mode, but the user is not attempting to restore the virtual machine to another VMware ESXi host using a VMFS6 datastore, and vice versa.
Important: This limitation does not apply to VMware vCenter backup sets.
Unfortunately, there is no workaround for this issue. You can only restore to the corresponding guest virtual machine to a VMware ESXi host with datastore that is using the same VMFS version.
VMware ESXi, datastore, guest, VMFS, virtual disks, VDDK