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Torch Object Storage

Data migration

Overview

Overview

This topic explains how to migrate data from third-party services and offline devices to TOS.

Migration solutions

Migration method	Recommended data volume	Use cases	Estimated duration	Migration costs	Related documentation
API or SDK	No limit (depending on your business needs)	Use an API or SDK when new data is generated daily and needs to be uploaded to TOS, such as when you need to regularly back up local data to the cloud.	With 1 Gbps of bandwidth, you can transfer approximately 8 TB of data daily. Migration time depends on the bandwidth and the volume of data. For small files (less than 1 MB), estimate the migration time by dividing the total number of files by the number of objects processed per second.	Over the public network: Third-party cloud service providers or IDCs will charge you for outbound traffic. TOS will not charge you for inbound traffic. Over a dedicated line: No additional costs except for the dedicated line charges. Over the private network (ECS): Free. TOS costs: TOS will charge you for storage and requests. For more information, see Requests and Data transfer.	PutObject Overview of object uploading (Java SDK)
tosutil or Rclone	0 to 100 TB	Use Rclone when the data to be migrated does not come from a third-party cloud service provider supported by Data Migration Service. Use tosutil when data is stored in an Internet data center (IDC) or file system.	With 1 Gbps of bandwidth, you can transfer approximately 8 TB of data daily. Migration time depends on the bandwidth and the volume of data. For small files (less than 1 MB), estimate the migration time by dividing the total number of files by the number of objects processed per second.	Over the public network: Third-party cloud service providers or IDCs will charge you for outbound traffic. TOS will not charge you for inbound traffic. Over a dedicated line: No additional costs except for the dedicated line charges. Over the private network (ECS): Free. TOS costs: TOS will charge you for storage and requests. For more information, see Requests and Data transfer.	Accessing TOS with Rclone Upload objects (cp)
Online migration	Public network: 0 to 500 TB Dedicated line: No limit	Use Date Migration Service or TOS Import when you want to easily migrate data from third-party sources to TOS, or to migrate data between TOS buckets within the same region. Use TOS mirroring rules when migrating data from third-party services to TOS to avoid service interruption.	With 1 Gbps of bandwidth, you can transfer approximately 8 TB of data daily. Migration time depends on the bandwidth and the volume of data. For small files (less than 1 MB), estimate the migration time by dividing the total number of files by the number of objects processed per second.	During data migration, TOS will charge you for making API requests and uploading and downloading data. For billing details, see Requests and Data transfer. Data Migration Service does not charge additional fees.	Online migration with zero service disruption

Last updated: 2026.06.04 15:19:42