How to power off an OceanStor V3 series unified storage system?
Power off an OceanStor V3 series unified storage system as follows:
1. Stop host services.
2. Press and hold down the power button on the controller enclosure for 5 seconds, or use DeviceManager to power off the storage system.
3. After the power-off is complete, disconnect the external power supply from the controller enclosure and disk enclosure.