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SmartMigration Feature Guide

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado3000 V3, Dorado5000 V3, Dorado6000 V3 and Dorado18000 V3. This document describes the implementation principles and application scenarios of the SmartMigration feature. Also, it explains how to configure and manage SmartMigration.
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Modifying the Properties of a SmartMigration Task (Applicable to V300R002C10 and Earlier Versions)

Modifying the Properties of a SmartMigration Task (Applicable to V300R002C10 and Earlier Versions)

This operation enables you to modify the split mode and migration speed of a SmartMigration task.

Prerequisites

The properties of a SmartMigration task can be modified when the task is in the Queuing, Migrating, or Fault state.

Procedure

  1. Choose Provisioning > Resource Performance Tuning > SmartMigration.
  2. Choose a SmartMigration whose properties you want to view and modify, and click Properties.

    The SmartMigration Task Properties dialog box is displayed.

  3. Modify the properties of a SmartMigration.

    1. Modify the properties of a SmartMigration. Table 5-3 describes the related parameters.
      Table 5-3 SmartMigration parameters

      Parameter

      Description

      Setting

      Split Mode

      Split mode of SmartMigration. The value can be Automatically Split or Manually Split.

      • Automatically Split

        After data synchronization, the system performs splitting automatically. After that, the migration is complete.

      • Manually Split

        After data synchronization, perform splitting manually. After that, the migration is complete.

      [Example]

      Auto Split

      Migration Speed

      Migration speed of the SmartMigration. The value contains Low, Medium, High and Highest.

      • Low

        Migration takes a long time. The low speed is recommended when the system service load is heavy.

        The migration speed ranges from 0 MB/s to 5 MB/s.

      • Medium

        Migration takes a relatively short period. The medium speed is recommended when the system service load is relatively heavy.

        For Dorado3000 V3, the speed rages from 5 MB/s to 10 MB/s. For other models, the speed ranges from 10 MB/s to 20 MB/s.

      • High

        Migration takes a short period. The high speed is recommended when the system service load is relatively light.

        For Dorado3000 V3, the speed ranges from 10 MB/s to 20 MB/s. For Dorado5000 V3 (SAS), the speed ranges from 20 MB/s to 35 MB/s. For Dorado5000 V3 (NVMe), Dorado6000 V3, and Dorado18000 V3, the speed ranges from 50 MB/s to 70 MB/s.

      • Highest

        Migration takes the shortest period. The highest speed is recommended when the system service load is the lightest.

        If no host is delivering I/Os, the migration speed is higher than 100 MB/s. If any hosts are delivering I/Os, the maximum migration speed is about 80 MB/s. (For Dorado3000 V3, the speed ranges from 10 MB/s to 20 MB/s).

      NOTE:
      • The speed is affected by the LUN read and write performance and the link bandwidth.
      • A high migration speed imposes greater impact on the host service performance. Performing synchronization at the Highest speed may cause overloaded services and interruption of SmartMigration during synchronization. You are advised to use the highest speed when no service is running on hosts.

      [Example]

      Medium

    2. Click OK.

      The Execution Result dialog box is displayed, indicating that the operation was successful.

  4. Click Close.
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Updated: 2019-07-17

Document ID: EDOC1100049155

Views: 8996

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