A control box of S5500 configured eight FC 300G and eight SATA 1T hard drives.Five FC 300G hard drives made RAID group 0, Five SATA 1TB hard drives made RAID group 1.Now, want to configure global hot spare disk for storage, in this case, how to configure it?
In the process of SAN storage controller troubleshooting, before replacing the controller, in order to ensure that data is consistent, just make sure that LUN of belonging to controller can send IO when there is no host, don't have to do other operations.
Multi-path software failover and failback process apply transparent to the host, to avoid the path failure between the host and array which led to the suspension of IO.