Help Center/ Object Storage Service/ FAQs/ Data Security, Migration, and Backup/ Can I Recover OBS Data After It Is Deleted or Overwritten?
Updated on 2024-10-15 GMT+08:00
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Can I Recover OBS Data After It Is Deleted or Overwritten?

No. OBS data that you manually delete or overwrite or that is automatically deleted (by a lifecycle rule or when the account is frozen or deregistered) cannot be recovered on Huawei Cloud.

Scenarios where data can be deleted or overwritten:

  • Use OBS Console, API, SDKs, OBS Browser+, obsutil, or obsfs to delete objects. For details, see Deleting an Object.
  • Using OBS Console, API, SDKs, OBS Browser+, obsutil, or obsfs to upload a file with the same name as a previously uploaded file will overwrite the previous file in OBS.
  • Based on a lifecycle rule, OBS automatically deletes the files that meet the deletion criteria defined in the rule. For details, see Lifecycle Management.
  • If you have configured a cross-region replication rule that also synchronizes the add, modify, or delete actions, file modifications or deletions made on the source bucket will be applied to the destination bucket. For details, see Cross-Region Replication.
  • Inappropriate access control causes files to be maliciously deleted or overwritten by others. For details, see Permissions Management.
  • If your account is in arrears, a retention period is provided according to your tier. During the retention period, your data stored in OBS will be retained, and your account will be suspended. If your outstanding balance is not paid off when the retention period ends, data stored in OBS will be deleted and cannot be recovered. For details, see Arrears.

Methods of preventing accidental deletions or overwrites:

  • Access control
    • Use the access control capabilities provided by OBS.
    • Enable Operation Protection. With this function enabled, OBS authenticates a user's identity when they perform any risky operation like deleting a bucket. For details, see Critical Operation Protection.
  • Versioning

    When versioning is enabled for a bucket, OBS can keep multiple versions of an object in the bucket. That way you can quickly retrieve and restore every object version as needed, or recover data from both accidental actions and application failures. For details, see Versioning.

  • Cross-region replication

    Replicate data from one region to another for remote backup. For details, see Cross-Region Replication.

  • WORM

    Use WORM to protect objects from being deleted or overwritten during a specified protection period. For details, see WORM.