~$ az vm create -g MeineRG -n MeineVM --image UbuntuLTS \
   --admin-username ubuntu --data-disk-sizes 100 100
 
~$ az vm get-instance-view -g MeineRG -n MeineVM \
  --query "storageProfile.dataDisks[].{diskSizeGb: diskSizeGb, 
       name: name, id: managedDisk.id}"
[
  {
    "diskSizeGb": 100,
    "id": "/subscriptions/54c6f7b7-3c3f-4068-a1b8-51bddf711d33/
              resourceGroups/MEINERG/providers/Microsoft.Compute/disks/
              MeineVM_disk2_a6afada35f0d43b48f47d6c77880f9db",
    "name": "MeineVM_disk2_a6afada35f0d43b48f47d6c77880f9db"
  },
  {
    "diskSizeGb": 100,
    "id": "/subscriptions/54c6f7b7-3c3f-4068-a1b8-51bddf711d33/
              resourceGroups/MEINERG/providers/Microsoft.Compute/disks/
              MeineVM_disk3_ec70869af38443a2a3898b25aa8e9fdc",
    "name": "MeineVM_disk3_ec70869af38443a2a3898b25aa8e9fdc"
  }
]
