Powering off Storage Systems
This section describes how to power off HyperMetro storage systems.
Powering off Both HyperMetro Storage Systems
You can power off both HyperMetro storage systems if they must be temporarily stopped due to equipment room relocation or power supply failures.
Procedure
- Power off the HyperMetro storage systems.
- Stop host services related to HyperMetro.
- Power off the storage systems one at a time.
For details, see Powering off the Storage Device in the Administrator Guide corresponding to your product model.
- Power off the quorum server.
For details, see the document delivered with the quorum server.
- (Optional) Power off switches.
The need for this operation varies depending on your networking and services.
- Resume the HyperMetro service.
- (Optional) Power on switches.
For details, see the document delivered with the switches.
- Power on the quorum server.
For details, see the document delivered with the quorum server.
- Power on the storage systems.
For details, see Powering on the Storage Device in the Administrator Guide corresponding to your product model.
The HyperMetro storage systems can be powered on at the same time. After they are powered on, wait until the status of the HyperMetro pairs and consistency groups becomes Normal. Then, you can power on the application hosts.
- Power on application hosts and start host services.
- (Optional) Power on switches.
Powering off One Storage System in a HyperMetro Pair
You can power off either storage system in a HyperMetro pair without interrupting services.
Procedure
- Check the running status of the HyperMetro pair.
- If Running Status is Normal, go to Step 2.
- If Running Status is Synchronizing, wait until the synchronization is complete and then go to Step 2.
- If Running Status is Invalid, rectify the fault. After Running Status changes to Normal, go to Step 2.
If you cannot rectify the fault, contact Huawei technical support.
- If Running Status is To be synchronized, Paused, or Force started, go to Step 3.
- Suspend the services on the storage system that you want to power off.
- Log in to DeviceManager of the storage system that you want to power off. Choose Data Protection > Protection Entities > LUNs. Click the HyperMetro Pairs tab.
- Select the HyperMetro pair and click Pause. In the dialog box that is displayed, select Preferred or Non-preferred and click OK.
If the storage system that you want to power off is at the preferred site, select Preferred.
If the storage system that you want to power off is at the non-preferred site, select Non-preferred.
- Check whether HyperMetro services are running on the storage system that you want to power off.
- Log in to DeviceManager of the storage system that you want to power off. Choose Data Protection > Protection Entities > LUNs. Click the HyperMetro Pairs tab.
- Query Local Resource Role to determine whether the current storage system is the preferred or non-preferred system.
- Check whether Local Resource Host Access Status is Read-write.
- If Local Resource Host Access Status is Read-write, perform the following operations to switch services to the other storage system that will not be powered off.
- Synchronize the data on both storage systems.
Select the HyperMetro pair and click Synchronize.
- Suspend the services on the storage system that you want to power off.
Select the HyperMetro pair and click Pause. In the dialog box that is displayed, select Preferred or Non-preferred and click OK.
If the storage system that you want to power off is at the preferred site, select Preferred.
If the storage system that you want to power off is at the non-preferred site, select Non-preferred.
- Synchronize the data on both storage systems.
- If Local Resource Host Access Status is not Read-write, go to Step 4.
- If Local Resource Host Access Status is Read-write, perform the following operations to switch services to the other storage system that will not be powered off.
- Power off the storage system.
- Log in to DeviceManager.
- Choose
> Power Off Device.
- Confirm the information in the dialog box, enter the password of the current user, and select I have read and understand the consequences associated with performing this operation.
- Click OK.
The Success dialog box is displayed.
- Click OK.
- Disconnect the controller and disk enclosures from the external power supply.
- Power on the storage system.
- Connect the controller and disk enclosures to the external power supply.
- Press the power button on the controller enclosure.
The power indicator on the controller enclosure keeps blinking until the system is powered on. This process takes 15 to 30 minutes.
- After the storage system has been powered on, manually synchronize the HyperMetro pair to restore the HyperMetro relationship.
> Power Off Device.