Restoring to a Specified Point in Time
GeminiDB Cassandra lets you recover lost or corrupted data by restoring it to a specific point in time using automated backups.
The most recent full backup will be downloaded from OBS for restoration. After the restoration is complete, incremental backups will be replayed to the specified point in time. The time required depends on the amount of data to be restored.
Usage Notes
- This function is only available to new GeminiDB Cassandra instances.
- After automated backup is enabled, the system performs an incremental backup based on the preset incremental backup interval. The incremental backup is stored in OBS.
- Keep your account balance above zero so that backup data can be restored to a new instance.
- Data can be restored to a specified time point only after the automated backup policy is enabled.
- During the instance restoration, backup files are downloaded from OBS buckets to the data directory of the restored instance. The download bandwidth of OBS is 40 MB/s.
Procedure
- Log in to the Huawei Cloud console.
- On the Instances page, click the target GeminiDB Cassandra instance.
- In the navigation pane on the left, choose Backups & Restorations.
- On the Backups & Restorations page, click Restore to Point in Time. Figure 1 Restoring data to a point in time
- Select a restoration date and a time point and click OK. Figure 2 Restore to Point in Time
- On the page, create an instance of the same specifications as the instance to be restored. The new DB instance is independent of the original one.
- The new instance should be deployed in a different AZ to ensure that your applications will not be affected by SPOFs.
- The compatible API, instance type, instance version, and CPU type are the same as those of the original and cannot be changed.
- Other settings are the same as those of the original instance by default but can be modified. For details, see Buying a GeminiDB Cassandra Instance.
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