How to disable data devices in thin pool?
Below command disable DATA devices AAA and AAB in MyThinPool. If the DATA device to be used for thin extent allocation , it should be on enabled state. Once it is disabled , we can remove the DATA devices from thin pool. Symmetrix automatically initiates drain operation on disabled DATA devices without any disruption to the application. Once all the allocated extents are drained to other DATA devices, the disabled DATA devices can be removed from the thin pool.
symconfigure -sid 1234 -cmd "disable dev AAA:AAB in pool MyThinPool, type=thin;" commit