Powering off the Storage Device
Adhere to the correct power-off sequence when you power off the storage device. This is especially important when replacing cabinet subracks or dealing with power link failures.
Prerequisites
No services are running on the storage device.
Context
The correct power-off sequence is as follows: stopping services running on the storage device → holding down the power button for 5 seconds to power off the controller enclosure → disconnecting the controller enclosure and disk enclosures from their external power supplies.
When you want to power off a storage system with four or more controllers, press the Power button of any controller enclosure that houses the first four controllers for five seconds to power off the entire system.
To power off the storage device, you can either press and hold the controller enclosure's power button for 5 seconds or execute power-off operations on DeviceManager. The example procedure in this document describes how to power off the storage device using DeviceManager.
Procedure
- Log in to DeviceManager.
- Choose
Settings >
Power Off Device.
- Confirm the information in the displayed Danger dialog box and enter the password of the currently logged in user. Then select I have read and understand the consequences associated with performing this operation.
If you enter the wrong password three times in succession within 5 minutes, the current user will be logged out and exit DeviceManager.
- Click OK.
The Success dialog box is displayed, indicating that the operation succeeded.
- Click OK. You have powered off the storage device.
- Disconnect all power supplies from the controller enclosures and disk enclosures to power off the storage system.
Settings > 
Power Off Device.
