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Command Reference for Block

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado3000 V3, Dorado5000 V3, Dorado6000 V3 and Dorado18000 V3. Based on the CLI provided by the DeviceManager, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands.
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change hyper_metro_pair general

change hyper_metro_pair general


The change hyper_metro_pair general command is used to change HyperMetro attributes.


change hyper_metro_pair general pair_id=? { recovery_policy=? | synchronization_rate=? | isolation_switch=? | isolation_threshold=? } *






ID of the HyperMetro pair.

Run the "show hyper_metro_pair general" command without any parameters to obtain the value.


Recovery policy.

The value is "automatic" or "manual", where:

  • "automatic": automatic recovery policy. Data will be automatically synchronized after faults are rectified.
  • "manual": manual recovery policy.

Data needs to be manually synchronized after faults are rectified.


Synchronization rate.

The value is "Low", "Middle", "High", or "Highest", where:

  • "Low": low rate.
  • "Middle": medium rate.
  • "High": high rate.
  • "Highest": the highest rate.


Isolation threshold.

The value ranges from 10 ms to 30s. The default value is "1s".


Isolation switch.

The value is "open" or "close", where:

  • "open": The isolation switch will be turned on. After the isolation switch is turned on, the system will suspend the HyperMetro pair when the difference between the write I/O latency of the two storage arrays is greater than the isolation switch. The storage array with the longer write I/O latency will stop providing services.
  • "close": The isolation switch will be turned off.



Usage Guidelines



  • Change the pair synchronization rate to "Low" whose pair ID is "1".
    admin:/>change hyper_metro_pair general pair_id=1 synchronization rate=Low 
    Command executed successfully.
  • Change the synchronization of HyperMetro pair "1" to "Highest".
    admin:/>change hyper_metro_pair general pair_id=1 synchronization_rate=Highest 
    WARNING: You are about to change the synchronization speed to the "Highest". 
    After the operation, the Hyper Metro pair will be synchronized at the highest speed, which may cause host latency increase and disconnection of HyperMetro pairs. 
    Suggestion: Select a low synchronization speed or use the "Highest" synchronization speed during off-peak hours. 
    Have you read danger alert message carefully?(y/n)y 
    Are you sure you really want to perform the operation?(y/n)y 
    Command executed successfully.

System Response


Updated: 2019-07-16

Document ID: EDOC1100049140

Views: 122865

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