How Does Migration Affect Data in the Destination Bucket?
The impacts of migration on existing data in destination buckets depend on whether objects with the same name exist in the source and destination buckets.
- If no object with the same name exists, the migration has no impacts on the existing data in the destination bucket.
- Data in the destination bucket is not modified during the migration.
- Data in the destination bucket is not deleted after the migration.
- If objects with the same name exist, whether these objects are overwritten by those migrated from the source bucket depends on the overwriting policy configured for the migration task or task group. For details about the policies, see Table 1.
Table 1 Policies for overwriting objects with the same name in the destination bucket Policy
Description
Overwrite if source newer or different size
If a source object is not as large as or was last modified more recently than its paired destination object, the source object will overwrite the destination object. Otherwise, the source object will be skipped.
Never overwrite
The system always skips source objects and keeps their paired destination objects.
Always overwrite
The system always allows source objects to overwrite their paired destination objects.
Product Consulting FAQs
- When Do I Need to Perform Pre-migration Evaluation Before Creating Migration Tasks?
- How Do I Migrate OBS Bucket Data from One Region to Another?
- How Do I Migrate the OBS Bucket Data from One Account to Another?
- How Do I Migrate Data from Multiple Source Buckets to a Single OBS Bucket on Huawei Cloud?
- How Do I Migrate Data in the Root Directory?
- How Does Migration Affect My Source Data? What Are the Impacts on Migration If the Source Data Changes?
- How Do I Change the Storage Path of a Migrated Object?
- How Does OMS Ensure Data Consistency If Data Is Continuously Written to OBS?
- How Do I Obtain Required Permissions for the Source and Destination Platform Accounts?
- How Do I Review the Objects Migrated in a Migration Task?
- How Do I Review the Objects Migrated in a Migration Task Group?
- How Do I Review the Objects Migrated in a Synchronization Task?
- Can I Migrate Data in a Specified Period Using a Synchronization Task?
- Can OMS Only Migrate the Data Generated After a Specified Time?
- Can OMS Filter the Data to Be Migrated by Suffix?
- Does OMS Support Batch Bucket Migration?
- What Is the Storage Class of Archive Data Migrated to the Archive Destination Bucket?
- What Are the Application Scenarios of Migration Tasks and Migration Task Groups?
- If I Delete an Object from the Source Bucket, Will the Corresponding Object in the Destination Bucket Be Deleted?
- How Does OMS Ensure Data Consistency Between the Source and Destination Buckets?
- Why Is the Total Number or Size of Objects in the Destination Bucket Inconsistent with Those in the Source Bucket After the Migration?
- How Does Migration Affect Data in the Destination Bucket?
- Why Are the Migration Progress and the Transmitted Data Volume 0 After the Migration Is Complete?
- How Do I Choose Storage Classes?
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