Database Backup (DBS) can use backup gateways to automatically download backup sets. This topic describes how to configure automatic download of backup sets.
Prerequisites
A backup gateway is added. DBS connects to on-premises devices by using the backup gateway. For more information, see Add a backup gateway.
Pricing
DBS does not charge a fee for network traffic that is generated when you manually download a backup set.
Limits
Limit | Logical backup | Physical backup |
Backup destination storage type | Only DBS built-in storage is supported. Object Storage Service (OSS) buckets are not supported. | Only DBS built-in storage is supported. Object Storage Service (OSS) buckets are not supported. |
Full data | The following database engines are supported:
Note MongoDB data is in the JSON format. Other data is in the CSV format. | The following database engines are supported:
Note
|
Incremental data | The following database engines are supported: MySQL Note Data is in the native format of MySQL. | The following database engines are supported:
Note Backup data is in the same format as its full data. |
Procedure
Log on to the Database Backup (DBS) console.
In the left-side navigation pane, click Backup Schedules. In the top navigation bar, select a region.
- Click Schedule ID or Manage in the Actions column corresponding to a backup schedule.
On the Configure Task page, click Set backup set download rules in the Backup set download section.
NoteIf the database engine of a backup schedule does not support the download of backup sets or the destination storage type is not DBS built-in storage, the Set backup set download rules button is unavailable in the console.
Configure the parameters that are described in the following table.
Parameter
Description
Automatic download status
Specifies whether to enable automatic download. Select Enable.
Target type
By default, the parameter is set to the directory of the server on which the backup gateway is installed.
Backup Gateway
The backup gateway that is used by DBS to connect to the on-premises device. For more information, see Add a backup gateway.
ImportantThe automatic download of backup sets feature is not yet commercially available and does not ensure stable performance. To prevent data accumulation and other exceptions, we recommend that you do not use the same backup gateway to download the backup data of multiple backup schedules.
Target location
The type of the location and the corresponding directory to which the backup set is downloaded. Valid values:
Server directory
FTP direction
NAS direction
Minio direction
Full data format
This parameter is automatically configured by the system and cannot be modified.
NoteFor more information about the data format of full and incremental backup sets, see the "Feature limits and formats" section of the Overview topic.
Incremental data format
This parameter is automatically configured by the system and cannot be modified.
Click OK.
After you configure the automatic download of backup sets feature, DBS does not trigger the automatic download rule to download the historical backup data. DBS triggers the automatic download rule only when new full or incremental backup data is generated.
After the download is complete, decompress the downloaded package. By default, the backup sets are compressed in the
<Download task ID>.tar.gz
package. Run the following commands to decompress the downloaded package:Run the
gzip -d <Download task ID>.tar.gz
command to obtain the<Download task ID>.tar
file.Run the
tar xvf <Download task ID>.tar
command to obtain the<Download task ID>
file.
What to do next
View download progress: You can view the download progress of backup sets in the DBS console.
Restore the downloaded backup data: You can restore the downloaded backup data to database instances.