source
Parameters
value
The source instant-snapshot to create this disk. When creating a new instance, one of initializeParams.sourceSnapshot or initializeParams.sourceInstantSnapshot initializeParams.sourceImage or disks.source is required except for local SSD. To create a disk with a snapshot that you created, specify the snapshot name in the following format: us-central1-a/instantSnapshots/my-backup If the source instant-snapshot is deleted later, this field will not be set.