Migrate data from non-Alibaba Cloud sources to Alibaba Cloud NAS - File Storage NAS

Billing

Migrating data from non-Alibaba Cloud sources to Alibaba Cloud NAS may incur the following fees:

Storage fees for File Storage NAS. You can purchase a resource plan to offset these fees. For more information about NAS billing, see Billing overview.
If you use an ECS instance as a transit node for data transmission, you are charged for the instance based on its configuration. For more information about ECS billing, see Billing methods overview.
If you download data from a NAS file system to your data center, you are charged for the outbound traffic of the Elastic IP Address (EIP). For more information about EIP billing, see Pay-as-you-go EIPs.

Procedure

To migrate data from a non-Alibaba Cloud source to Alibaba Cloud File Storage NAS, configure an ECS instance as a transit node and mount a NAS file system to the instance. Then, use a migration tool to transfer the data.

If you frequently read and write large amounts of data between a NAS file system and your data center, you can create a leased line connection to directly mount and access the file system. For more information, see Access a file system from a data center.

Migration tool selection

The following table compares the features and scenarios of available migration tools.

Migration tool	Features	Scenarios
Migrate data using an SFTP client	Supports multiple operating system platforms. Provides a graphical user interface (GUI).	Suitable for one-time uploads of a small number of files to an NFS file system or downloading data from an NFS file system to a local device.
Migrate data using the rsync command line interface	Supports Linux, Windows, and macOS. On a local Linux or macOS system, you can configure a crontab job to automatically back up data to NAS. Preserves file metadata, including owner and permission information, after uploads and downloads. Supports incremental synchronization.	Suitable for uploading and downloading many files or for frequent file transfers.
Migrate data using the Robocopy tool	A built-in tool in Windows. Supports multi-threaded migration and resumable transfers. Handles massive migrations of hundreds of millions of small files, with a total data volume exceeding 10 TB and an average file size of approximately 100 KB. Supports incremental synchronization.	Suitable for multi-threaded, resumable migration of massive amounts of data on Windows operating systems.
Migrate data using IIS FTP	Supports multiple operating system platforms. Provides a GUI.	Suitable for accessing an SMB protocol file system on a NAS file system using an IIS service.
Migrate data using the fpsync command line interface	Migrates data in a multi-threaded manner.	Suitable for multi-threaded data migration to an NFS file system.