This topic describes how to migrate data from a NAS file system to another storage medium or from another storage medium to a NAS file system.

Migrate data from an on-premises storage system to NAS

To migrate data from an on-premises storage system to Apsara File Storage NAS, perform the following operations:
  1. Configure an intermediate node for data transfer
  2. Migrate data to a NAS file system

Migrate data between a NAS file system and an OSS bucket

We recommend that you use the following methods to migrate data between a NAS file system and an Object Storage Service (OSS) bucket:
  • Use the ossutil tool of OSS. The ossutil tool has the following benefits:
    • Provides a wide range of simple and convenient commands to manage objects and buckets and ensures high performance of operations.
    • Supports concurrent upload and resumable upload of files.
    • Allows you to upload and download directories or folders.

    For more information, see Migrate data by using ossutil.

  • Use Data Transport.

    Data Transport is a tunnel between different storage services of Alibaba Cloud. Data Transport allows you to migrate data between OSS and NAS without the need to deploy a migration tool. For more information, see Migrate data by using Data Transport.

    Data Transport is in public preview. To migrate data by using Data Transport, submit a ticket to apply for a whitelist.

Migrate data between NAS file systems

We recommend that you use the following methods to migrate data between NAS file systems:

  • If you use a Network File System (NFS) file system, we recommend that you use the rsync tool to migrate data. The rsync tool has the following benefits:
    • After a file is uploaded or downloaded, the metadata of the file remains unchanged, including the owner and permission information.
    • Incremental data can be synchronized.
    For more information, see Migrate data by using the rsync command-line tool.
  • If you use a Server Message Block (SMB) file system, we recommend that you use the Robocopy tool of Windows to migrate data. The Robocopy tool supports features such as multi-thread concurrent migration and resumable upload. You can use scripts to accelerate data migration. For more information, see Migrate data by using the Robocopy tool.
  • You can use Data Transport to migrate data. For more information, see Migrate data by using Data Transport.