VMware vSphere ESXi 6.x |
VMware vSphere ESXi 7.x |
VMware vSphere ESXi 8.x |
A disk file of this type consists of a virtual disk descriptor file and paired delta extent file. These data files are based on the vmfsSparse format, intended to store delta content or "change data" for a period of time, otherwise known as a snapshot.
Notes:
To recreate a missing virtual disk (VMDK) descriptor file for delta disks:
Base disk descriptor file examplevm.vmdk | Recreated delta descriptor examplevm-000001.vmdk (originally copied from examplevm.vmdk) |
# Disk DescriptorFile version=1 encoding="UTF-8" CID=1974#### parentCID=ffffffff createType="vmfs" # Extent description RW 31457280 VMFS "examplevm-flat.vmdk" # The Disk Data Base #DDB ddb.virtualHWVersion = "7" ddb.longContentID = "5fd#############5be ##########90" ddb.uuid = "60 ## ## ## ## ## ## ##-## ## ## ## ## ## ## 61" ddb.geometry.cylinders = "1958" ddb.geometry.heads = "255" ddb.geometry.sectors = "63" ddb.adapterType = "lsilogic" |
# Disk DescriptorFile version=1 encoding="UTF-8" CID=7f3a1e17 parentCID=19741890 createType="vmfsSparse" parentFileNameHint="examplevm.vmdk" # Extent description RW 31457280 VMFSSPARSE "examplevm-000001-delta.vmdk" # The Disk Data Base #DDB ddb.longContentID = "5fd#############5be ##########90" |
For high to low-level information on virtual disks, see VMware Virtual Disks: Virtual Disk Format 5.0.
Recreating a missing virtual machine disk descriptor file
"The parent virtual disk has been modified since the child was created" error
Understanding VM snapshots in ESXi / ESX
Editing configuration files in VMware ESXi and ESX
How to file a Support Request in Customer Connect
Changing the location of snapshot delta files for virtual machines in ESXi 5.x