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Powering on a Device
This topic guides you through the process of re-powering on the storage device that has been powered off.
Prerequisites
The storage device contains a disk enclosure with coffer disks.
Precautions
- Before powering on the storage system for the first time or after clearance of the system configurations, ensure that controller A is correctly connected and inserted in the controller enclosure. Otherwise, the storage system cannot be correctly powered on.
- Do not wear any ESD wrist straps during a power-on to avoid electric shocks.
- Do not remove or insert any optical fibers, network cables, coffer disks, and interface modules during a power-on to avoid data loss.
- Do not online modify any expansion cable connections after the storage device has been powered on; otherwise, device failures may occur.
- Complete expansion cable connections for a newly added disk enclosure before you power on the enclosure. Also, do not modify any expansion cable connections after the new disk enclosure has been powered on; otherwise, device failures may occur.
Always respect the following power-on sequence:
- Switch on external power supplies of the hardware components.
- Press the power button on the controller enclosure.
- Switch on Ethernet switches or Fibre Channel switches (if the Ethernet or fiber switch is configured, but not powered on).
- Switch on application servers (if the application server is not powered on).
Procedure
- Check that all of the power cables have snapped into place.
- Check the labels on the power cables and identify the power switches corresponding to those cables in the power distribution unit (PDU).
- Sequentially switch on the identified power switches.
- Switch on the controller enclosure.
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NOTE: - To power on the storage system, press the power button. If the power indicator of the controller enclosure is blinking green, the storage system is being powered on. Do not hold down the power button for more than five seconds; otherwise, the storage system will be powered off.
- During the power-on, the power indicator of the controller enclosure blinks until the storage device is fully powered on in 15 to 30 minutes.
Follow-up Procedure
After the storage device has been powered on, verify that the indicator of each hardware component is in a normal state by referring to Checking the Running Status of the Storage Device. If you find an anomaly for any indicator, try to rectify it by referring to the Event Reference or Troubleshooting.
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