Select “Premium SSD (locally-redundant storage)”.
Accept default Encryption type selection. You can optionally choose to manage encryption key yourself.
Leave Ultra Disk compatibility unchecked.
Choose “Create and attach a new disk”.
On Create a new disk page, accept default Name and Source type.
Click Change size and select the desired data disk size for your VM.
Select No for “Enable shared disk”.
Click “Next : Networking >”.