RAID Rebuild

How to backup RAID configuration

I want o backup raid Configuration, but i dont know.

How to rebuild RAID without obstructing data migration?

I see why RAID rebuilds obstruct data migration. A RAID rebuild is NOT like backup and restore. The rebuild consumes resources, e.g. CPU etc. So if we have the RAID on a separate system (managed by its own CPU) then: Surely this allows a RAID rebuild without obstructing data migration? Do you...