1 chmdisk
2?  -name new_name_arg
3?  -tier
3.1  tier0_flash 
3.1  tier1_flash 
3.1  tier_enterprise 
3.1  tier_nearline 
4?  -easytierload 
4.1 default
4.1 low
4.1 medium
4.1 high
4.1 very_high
5?  -encrypt
5.1  yes
5.1  no
6 mdisk_id
6 mdisk_name