Yes, with Flare 32, there is a rebalance within a pool option and data will be restriped across all drives in the pool.    With that being said, without FAST VP licensed, it is a one-time relocation; happens only when drives are added.
My customer wants to add drives to an existing pool and would like the data to be reablanced across all drives.  Can this happen?
If I add drives to an existing Pool, can I rebalance?