The first four disks of the controller box or disk box in Huawei's hybrid flash storage system and one or more hard disks built into each controller together constitute the data (), which includes…

The first four disks of the controller box or disk box in Huawei's hybrid flash storage system and one or more hard disks built into each controller together constitute the data (), which includes three parts of data: cache data that needs power-off protection, OceanStorOS system data, system configuration information and logs, to increase system reliability.