Feature Overview
This article provides an overview of the various methods available for backing up data stored in the cloud. Tencent Cloud Object Storage (COS) offers three convenient options for users to back up their data stored in COS:
Backup and Disaster Recovery Solution Based on Cross-region Replication
Batch Data Copy Solution (COS Batch Processing Feature)
Migration Backup Solution Based on Migration Service Platform (MSP) Tool
Backup and Disaster Recovery Solution Based on Cross-region Replication
Cross-region replication is a configuration feature for storage buckets. By setting up cross-region replication rules, you can automatically and asynchronously copy incremental objects between storage buckets in different regions. Once cross-region replication is enabled, COS will precisely replicate the object content (such as object metadata and version ID) from the source bucket to the target bucket, ensuring that the replicated object copies have completely consistent attribute information.
For more details, please refer to: Disaster Recovery and High Availability Architecture Based on Cross-region Replication.
Scenarios
Remote disaster recovery: COS boasts 11 nines of availability for object data, but there is still a slight chance of data loss due to force majeure such as wars and natural disasters. If you want to avoid data loss by explicitly having a separate copy in a different region, you can use cross-region replication to achieve remote disaster recovery. In this way, when the IDC in one region is damaged due to force majeure, the IDC in the other region can still provide data copies for your use.
Compliance: COS ensures data availability by providing multiple copies and erasure codes for data in physical disks by default. However, there may be compliance requirements in some industries stipulating that you keep copies in another region. Cross-region replication allows data to be replicated across regions to meet such requirements.
Access latency reduction: when you have end users accessing objects from different regions, with cross-region replication, you can maintain object copies in the available storage regions closest to them, which can minimize access latency to deliver a better user experience.
Special technical requirements: if you have computing clusters in two different regions and the clusters need to process the same set of data, with cross-region replication, you can maintain object copies in both regions.
Data migration and backup: You can copy your business data from one availability region to another one as needed to implement data migration and backup.
How to Use
Batch Data Copy Solution
COS Batch Processing feature offers users large-scale, object-level batch copy operations.
Scenarios
Due to certain business reasons, you may need to back up all data from an existing storage bucket to another storage bucket to ensure data availability and reliability.
How to Use
Notes
Batch object copy operations require the use of the inventory feature. For more information about the inventory, see Inventory Feature Overview. You can batch copy specified objects from the source bucket to the target bucket, which can be in the same or different regions. Batch object copy operations support custom configurations related to PUT Object - copy parameters, which can affect the metadata or storage type of the replica. For more information about PUT Object-copy, please refer to PUT Object - copy.
Note
All objects to be copied must be in the same bucket.
Only one destination bucket can be configured for a batch copy job.
You need to have permission to read objects from the source bucket and write objects into the destination bucket.
The total size of the objects cannot exceed 5 GB.
Verification via ETags and server-side encryption using custom keys are not supported.
If the destination bucket does not have versioning enabled and contains an object with the same name as an object to be copied, COS will overwrite the object.
Data Migration Backup Solution
Tencent Cloud Migration Service Platform (MSP) offers users a convenient and efficient resource migration solution. After creating a migration task, users can view the migration progress, reports, and other information through the migration service console. For detailed instructions, please refer to: Tencent Cloud COS Inter-Migration.