316 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
3. For each of MDisk IDs that were obtained in the previous step, run the lsmdisk mdiskID 
command to discover MDisk controller and LUN information. Example 7-41 shows output 
for MDisk 0. The output displays the back-end storage controller name and the controller 
LUN ID to help you to track back to a LUN within the disk subsystem. 
Example 7-41   The lsmdisk command
IBM_2145:ITSO_CLUSTER:superuser>lsmdisk 0
id 0
name mdisk0
status online
mode managed
mdisk_grp_id 0
mdisk_grp_name STGPool_DS3500-1
capacity 128.0GB
quorum_index 1
block_size 512
controller_name ITSO-DS3500
ctrl_type 4
ctrl_WWNN 20080080E51B09E8
controller_id 2
path_count 4
max_path_count 4
ctrl_LUN_# 0000000000000000
UID 60080e50001b0b62000007b04e731e4d00000000000000000000000000000000
preferred_WWPN 20580080E51B09E8
active_WWPN 20580080E51B09E8
fast_write_state empty
raid_status
raid_level
redundancy
strip_size
spare_goal
spare_protection_min
balanced
tier generic_hdd
You can identify the back-end storage that is presenting the LUN by using the value of the 
controller_name field that was returned for the MDisk. 
On the back-end storage, you can identify which physical disks make up the LUN that was 
presented to the Storage Virtualize system by using the volume ID that is displayed in the UID 
field.