1 migratetoimage
2?  -copy id
3  -vdisk
4 source_vdisk_id
4 source_vdisk_name
5?  -threads number_of_threads
6  -mdisk
7 unmanaged_target_mdisk_id
7 unmanaged_target_mdisk_name
8?  -tier
8.1 tier0_flash
8.1 tier1_flash
8.1 tier_enterprise
8.1 tier_nearline
9  -mdiskgrp
10 managed_disk_group_id
10 managed_disk_group_name