Hi, it very useful Thanks. My case I have RAC 2 nodes. Because we have 2 separate storages to make sure database still operational even one of storages has problem, I decided to create ASM a disk group normal redundancy 2 failures group (each storage allocated LUNs will located on each Failure group). How to do migration to new Storage in my case. My database have very high I/O on ASM? is it still possible? Thanks! Thanks! Thanks!