Indicators of the first three coffer disks in a storage system blinking

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It is normal that indicators of the first three coffer disks are blinking. It indicates that data is being transferred without interrupting services.

Other related questions:
Functions of coffer disks of unified storage
Coffer disks of unified storage store the configuration data of the storage system, events, logs, and dirty data. Remaining capacity of coffer disks can be used to store storage service data.

Reason why only the first four disk indicators on the controller enclosure are blinking when the storage system is powered by BBUs
Reason why only the first four disk indicators on the controller enclosure are blinking when the storage system is powered by BBUs: FAQ-Why are only the first four disk indicators on the controller enclosure blinking when the storage system is powered by BBUs

Number of coffer disks in an OceanStor V3 storage system and capacity occupied by the coffer disks
The first four disks in the controller enclosure of the OceanStor 5300 V3/5500 V3 are planned as coffer disks. The first four disks in the first disk enclosure of the OceanStor 5600 V3/5800 V3/6800 V3 are planned as coffer disks. Coffer disks are used to store important data of a storage system. Each coffer disk occupies 5 GB of the capacity. Four coffer disks occupy 20 GB in total.

Impact of the replacement of coffer disks on the functionality of the operating system running in the storage system
Impact of the replacement of coffer disks on the functionality of the operating system running in the storage system: None. The operating system configurations of a storage system are saved in the Flash cards of controllers. Coffer disks are used to save the configuration data, events, and logs of the storage system. The replacement of coffer disks does not affect the operating system of the storage system, but the original configuration data, events, and logs will be lost.

Whether the operating system is stored in coffer disks of the OceanStor T Series unified storage system
The operating system of the OceanStor T Series unified storage is installed on controllers, not coffer disks. Coffer disks store configuration data of the storage system, events, logs, and data in the cache when a power supply unit (PSU) fails. Remaining capacity of coffer disks can be used to store service data.

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