i am afraid you will need to resort to using host-based tools, PowerPath Migration Enabler is a good one for this task.
So heres what happened..  The former storage guy(he resigned now) had created a Meta for one of our most important application and the meta that he created consists of 150 members each of 8 gb size. I am kinda new and was unaware of this until recently when i was asked to perform a lun expansion on that particular meta device.  My Question is :  Is there any way in which i can migrate that thin device(consisting of 150 members) onto another thin device of the same size but with lower meta members.  I was thinking of creating a device with config (18 x 69 gb) sort of lowering the meta member count?
Need help with migration in VMAX(20k).