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Command Reference 10

OceanStor 18500 V3 and 18800 V3 Mission Critical Storage System V300R003

"Based on the CLI, 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. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions."
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change hyper_metro_pair general

change hyper_metro_pair general

Function

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

Format

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

Parameters

Parameter

Description

Value

pair_id=? ID of the HyperMetro pair.

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

isolation_threshold=? Isolation threshold.

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

isolation_switch=? Isolation switch.

The value is "open" or "close", where:1:"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. 2:"close": The isolation switch will be turned off.

recovery_policy=? 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=? Synchronization rate.

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

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

Level

Administrator

Usage Guidelines

None

Example

  • Change the synchronization of HyperMetro pair "1" to "Low", run the following command.

    admin:/>change hyper_metro_pair general pair_id=1 synchronization_rate=Low
    Command executed successfully.
  • Change the synchronization of HyperMetro pair "1" to "Highest", run the following command.

    admin:/>change hyper_metro_pair general pair_id=1 synchronization_rate=Highest
    WARNING: You are about to select the "Highest" speed for synchronization.
    After the operation, the Hyper Metro pair will be synchronized at the highest speed, which may cause overloaded services and disconnection of HyperMetro pairs.
    Suggestion: Select the "High" speed. If you select the "Highest" speed, check the performance of the data receiving end and whether the link bandwidth between local and remote arrays is sufficient to prevent the disconnection of HyperMetro pairs during synchronization.
    Have you read warning message carefully?(y/n)y
    Are you sure you really want to perform the operation?(y/n)y
    Command executed successfully.

System Response

None

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Updated: 2019-07-22

Document ID: EDOC1000084078

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