Help Center/ Cloud Adoption Framework / Cloud Adoption Framework and Practices/ Adoption Implementation/ Application Cloud Migration/ Migration Solution Design/ Data Layer Migration Solutions
Updated on 2025-05-07 GMT+08:00
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Data Layer Migration Solutions

The data layer stores service data persistently and provides data for implementing upper-layer service logic. This layer stores structured and unstructured data. Structured data includes data in various types of databases, such as MySQL and MongoDB databases. Unstructured data includes data in object storage and file storage.

  • Structured data migration solution

    Structured data provides instant support for services, including data query, computing, analysis, and modification. Services requiring continuity depend on the real-time synchronization capability of database migration tools. When developing the structured data migration solution, you need to consider the service continuity, migration network, and service architecture to strike a balance between data migration complexity, data migration timeliness, and service continuity.

  • MySQL migration solution
    Table 1 MySQL migration solution

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud Data Replication Service (DRS)

    (Recommended)

    Full and incremental migration

    Simple configuration, one-click migration, and real-time synchronization of incremental data

    1. Migration from on-premises or cloud service MySQL instances to Huawei Cloud MySQL instances

    2. Migration from on-premises or cloud service MySQL instances to Huawei Cloud self-managed MySQL instances (migration to cloud service and then to self-managed MySQL instances)

    Export and import using mysqldump

    Full migration

    The solution does not depend on networks, and the operations are complex. Only full migration is supported. Incremental data synchronization is not supported.

    A long downtime window

    Primary/secondary replication

    Full and incremental migration

    Complex operations

    The source and destination databases are both self-managed MySQL databases, but their versions are incompatible with each other, so Huawei Cloud DRS cannot be used for the migration.
  • SQL Server migration solution
    Table 2 MySQL migration solution

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud DRS

    (Recommended)

    Full and incremental backup import

    Simple operations on a GUI

    Migration from on-premises SQL Server instances or cloud service SQL Server instances to Huawei Cloud SQL Server instances

    Backup and restoration

    Full and incremental backup import

    Complex operations

    Migration from on-premises SQL Server instances or cloud service SQL Server instances to Huawei Cloud RDS for SQL Server
  • PostgreSQL migration solution
    Table 3 PostgreSQL migration solution

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud DRS

    (Recommended)

    Full and incremental migration

    Simple configuration, one-click migration, and real-time synchronization of incremental data

    Migration from on-premises PostgreSQL instances or cloud service PostgreSQL instances to Huawei Cloud self-managed PostgreSQL instances or RDS for PostgreSQL

    Export and import using pg_dump

    Full migration
    Advantages: This solution does not depend on the network. 
    Disadvantages: The operations are complex. Only full migration is supported. Incremental data synchronization is not supported.

    Huawei Cloud DRS is not applicable.
  • MongoDB migration solution
    Table 4 MongoDB migration solution

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud DRS

    (Recommended)

    Full and incremental migration

    Simple configuration, one-click migration, and real-time synchronization of incremental data

    Migration from on-premises MongoDB instances or cloud service MongoDB instances to Huawei Cloud self-managed MongoDB instances or cloud service MongoDB instances

    Export and import

    Full migration

    The solution does not depend on networks, and the operations are complex. Only full migration is supported. Incremental data synchronization is not supported.

    Huawei Cloud DRS is not applicable.
  • Unstructured data migration solution

    Unstructured data is in irregular or incomplete data structures and does not have a predefined data model. It cannot be represented in a two-dimensional logical table of a database. Unstructured data includes office documents, texts, images, XML, HTML, reports, audios, and videos. Enterprises' unstructured data is mainly stored in file storage and object storage.

  • NAS migration solution
    Table 5 NAS migration solution

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud Cloud Data Migration (CDM)

    (recommended for migrating massive amounts of data)

    Full and incremental migration

    Simple operations and incremental migration, more suitable for massive amounts of data

    Migration of data from object storage, network file storage, and big data storage to Huawei Cloud OBS, SFS, and big data storage.

    Open-source tools Rclone and Rsync

    Full migration

    Rclone is complex. Rsync offers low migration efficiency.

    Huawei Cloud FMS and CDM are not applicable.
  • Object storage migration solution
    Table 6 Object storage migration

    Migration Solution

    Migration Method

    Description

    Scenario

    Huawei Cloud OMS (recommended)

    Full and incremental migration

    Simple operations, high concurrency, data verification, and visualized reports

    Migration of data from the source object storage to Huawei Cloud OBS

    Open-source tools Rclone and Rsync

    Full migration

    Rclone is complex. Rsync offers low migration efficiency.

    Huawei Cloud OMS is not applicable.