A customer engineer consult that S2300 storage is only equipped with controller cabinet and 8 hard disks, why there must be hard disks in slot 0-3 of controller cabinet.
System configuration data is stored in coffer of S2300 controller cabinet, which is hard disk of slot 0-3. After power supply off, battery begin provide power supply for S2300 controller cabinet. System would write Cache data into S2300 controller cabinet coffer in 2 minutes. So when deployment, make sure that there are hard disks in slot 0-3 of controller cabinet.
S2300 controller cabinet slot 0-3 hard disks are system coffer disks, which store important system data.
S2300 controller cabinet can provide storage space except for space occupied by system data of coffer, so do not swap disks randomly, it may destroy system data, and do not use coffer disk as hot spare disk.