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Replication Policy Management

You can perform replication to a bucket in a different location or the same location.
You can configure multiple replication policies, and if the source bucket becomes unavailable due to a failure or disaster, you can provide the service through the replica bucket.

information
  • The replication feature operates in a 1:N structure, allowing replication within a region or across regions. * Data transfer fees are added when performing cross-region replication.
  • The replication feature applies only to files uploaded after the replication policy is set.
  • Deleting the versioned file in the source does not delete the file in the replica bucket.
    • Example: If you set Bucket A → Bucket B, even if the version file in Bucket A is deleted, it remains in Bucket B.
  • You can configure bidirectional replication.
    • Example: When configured as Bucket A ↔ Bucket B, files uploaded to Bucket A are replicated to Bucket B, and files uploaded to Bucket B are replicated to Bucket A.
  • Duplicated files are not duplicated.
    • Example: When configured as Bucket A → Bucket B → Bucket C, files replicated from Bucket A → Bucket B are not replicated from Bucket B → Bucket C.
  • If there are no files in the original folder, that folder will not be duplicated in the copy.
Reference
The kr-south region does not provide inter-region Object Storage replication functionality.

Add replication policy

You can create a new replication policy and add it.

Notice
  • You can configure replication on the created bucket.
  • To add a replication policy, you must set the version control feature to enabled.
  • Refer to Configure Version Management for how to configure the version management feature.

To add a replication policy, follow these steps.

  1. All Services > Storage > Object Storage menu, click it. 1. Navigate to the Service Home page of Object Storage.

  2. On the Service Home page, click the Object Storage menu. 2. Go to the Object Storage List page.

  3. Object Storage list On the page, click the resource to which you want to add a replication policy. 3. Navigate to the Object Storage Details page.

  4. Click the Clone tab.

  5. Click the Add button. 5. Add Replication Policy A popup window opens.

  6. After entering the policy information, click the Confirm button. 6. A popup window that notifies the creation of a replication policy opens.

    CategoryWhether requiredDetailed description
    Policy NamerequiredEnter the replication policy name
    • including English letters, numbers, special characters (-._) within 255 characters
    Clone locationrequiredSelect the replication location (region)
    • Other locations can be selected
    Replication bucket namerequiredSelect the name of the replication bucket
    • Cannot add a replication policy between the same bucket
    Target filerequiredSelect files to duplicate
    • All: Duplicate all files
    • Prefix: Duplicate files that start with the entered prefix
      • Enter within 1,024 bytes based on UTF-8 encoding (same as file length restriction)
      • Special characters (%<>#\`^
    PriorityrequiredSpecify priority when multiple replication policies are configured
    • The priority can be set from 1 ~ 100, and a larger number indicates a higher priority
    • Cannot be set redundantly with another replication policy that uses the same replication bucket
    Delete marker duplicationSelectionWhether to use delete marker replication
    Table. Add Replication Policy Popup Items

  7. Click the Confirm button. 7. A replication policy will be added.

Caution
  • A replication policy cannot be added between the same bucket.
  • If there is an invalid policy, you cannot add a replication policy.
    • Example: When a policy remains after the replica bucket has been deleted
  • If the replication location is in a different region, inter‑region data transfer charges will apply.

Modify Replication Policy

You can modify the replication location, replication bucket name, and target file of the replication policy.

Information
  • To modify the replication policy, you must set the versioning feature to Enabled.
  • Refer to Configure Version Management for how to configure the version management feature.

To modify the replication policy, follow these steps.

  1. All Services > Storage > Object Storage menu, click it. 1. Navigate to the Service Home page of Object Storage.

  2. Click the Object Storage menu on the Service Home page. 2. Go to the Object Storage List page.

  3. On the Object Storage List page, click the resource to edit the replication policy. 3. Object Storage Details Navigate to the page.

  4. Click the Clone tab.

  5. In the replication policy list, click the More > Edit button of the policy you want to modify. 5. Edit Replication Policy A popup window opens.

  6. After modifying the replication policy information, click the Confirm button. 6. A popup window notifying the modification of the replication policy opens.

    CategoryRequirement statusDetailed description
    Clone locationrequiredSelect the replication location (region)
    • Other locations can be selected
    Replication bucket namerequiredSelect the name of the replicated bucket
    • Cannot add a replication policy between the same bucket
    Target filerequiredSelect files to duplicate
    • All: Duplicate all files
    • Prefix: Duplicate files that start with the entered prefix
      • Enter within 1,024 bytes based on UTF-8 encoding (same as file length restriction)
      • Special characters(%<>#\`^
    PriorityrequiredWhen multiple replication policies are set, specify the priority
    • The priority can be set from 1 ~ 100, and a larger number indicates a higher priority
    • It cannot be set redundantly with another replication policy that uses the same replication bucket
    Delete marker duplicationSelectionWhether to use delete marker replication
    Table. Replication policy edit popup items

  7. Click the Confirm button. 7. The replication policy update is complete.

Caution
  • A replication policy cannot be applied between the same bucket.
  • If there is an invalid policy, you cannot add a replication policy.
    • Example: When a policy remains after the replica bucket has been deleted.
  • If the replication location is in a different region, inter‑region data transfer charges will apply.

Changing Replication Policy Status

You can enable or disable the replication policy to change whether it is performed.

To change the replication policy status, follow these steps.

  1. All Services > Storage > Object Storage Click the menu. 1. Navigate to the Service Home page of Object Storage.
  2. On the Service Home page, click the Object Storage menu. 2. Go to the Object Storage List page.
  3. On the Object Storage List page, click the resource whose replication policy status you want to change. 3. Go to the Object Storage Details page.
  4. Click the Clone tab.
  5. In the replication policy list, click the More > Activate or More > Deactivate button of the policy whose status you want to change. 5. A popup window appears to notify a change in the replication policy status.
    • Enabled: Performs replication according to the replication policy.
    • Disable: Stops replication.
  6. Click the Confirm button. 6. The replication policy status changes.

Delete replication policy

You can delete unused replication policies.

To modify the replication policy, follow the steps below.

  1. Click the All Services > Storage > Object Storage menu. 1. Navigate to the Service Home page of Object Storage.
  2. On the Service Home page, click the Object Storage menu. 2. Go to the Object Storage List page.
  3. Object Storage List On the page, click the resource to delete the replication policy. 3. Navigate to the Object Storage Details page.
  4. Click the Clone tab.
  5. Click the More > Delete button of the policy you want to edit in the replication policy list. 5. A popup window notifying the deletion of the replication policy opens.
  6. Click the Confirm button. 6. The replication policy will be deleted.
Caution
  • If you change the versioning setting of the source and replica buckets, replication will not function properly.
    • If versioning on the source bucket is set to disabled, replication will not be performed. * If you set it to Use again, it will replicate uploaded files from the point of setting onward.
    • If you set the replica bucket’s versioning to disabled, replication will occur but versioning will not be possible. * If you set it to use again, version control will be applied from that point onward.
  • If you delete the source bucket, the configured replication policy will also be deleted.
  • When a replica bucket is deleted, the replication policy configured on the source bucket is retained.
    • If you recreate a replication bucket with the same bucket name as a deleted replication bucket, replication will be performed to that bucket.

Activating ServiceWatch replication metrics

By default, Object Storage is integrated with ServiceWatch and basic monitoring. To link Object Storage replication metrics to ServiceWatch, you must enable ServiceWatch replication metrics. For detailed information about ServiceWatch, please refer to ServiceWatch 개요.

Caution
  • Basic monitoring is provided for free, but enabling replication metrics as a detailed monitoring item incurs additional charges.
  • The ServiceWatch replication metric, once set per bucket, is applied to all replication policies of that bucket.

To enable the ServiceWatch replication metric for Object Storage, follow these steps.

  1. All Services > Storage > Object Storage click the menu. 1. Navigate to the Service Home page of Object Storage.
  2. On the Service Home page, click the Object Storage menu. 2. Navigate to the Object Storage List page.
  3. On the Object Storage list page, click the resource to enable ServiceWatch replication metrics. 3. Go to the Object Storage Details page.
  4. On the Object Storage Details page, click the Replication tab. 4. Go to the Clone tab.
  5. Click the Edit button for the ServiceWatch replication metric. 5. ServiceWatch Replication Metric Edit Navigate to the popup window.
  6. ServiceWatch Replication Metric Update in the popup window, after selecting Enable, review the guidance text and click the Confirm button.
  7. In the Replication tab, check the ServiceWatch replication metric items.

Disable ServiceWatch replication metrics

Caution
Disabling the replication metric is required for cost efficiency. Maintain the replication indicator only when absolutely necessary, and disable it otherwise.

To disable the ServiceWatch replication metric of Object Storage, follow these steps.

  1. Click the All Services > Storage > Object Storage menu. 1. Navigate to the Service Home page of Object Storage.
  2. On the Service Home page, click the Object Storage menu. 2. Go to the Object Storage List page.
  3. On the Object Storage List page, click the resource to disable ServiceWatch detailed monitoring. 3. Object Storage Details page.
  4. On the Object Storage Details page, click the Replication tab. 4. Go to the Clone tab.
  5. Click the Edit button for the ServiceWatch replication metric. 5. ServiceWatch Replication Metric Edit Navigate to the popup window.
  6. ServiceWatch Replication Metric Edit in the popup window, after deselecting Enable, review the guidance text and click the Confirm button.
  7. In the Replication tab, check the ServiceWatch replication metric items.
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