When backing up large databases within a fixed backup time window, you can increase backup throughput by raising the concurrent thread count or capping network bandwidth usage. Both settings involve a trade-off: higher throughput puts more load on the source database.
Two parameters control the maximum backup speed. Use them independently or together depending on your backup schedule type and database type.
Parameters
Maximum Concurrent Threads for Full Data Backup
Controls how many threads run in parallel during a full backup. More threads increase backup speed and increase the load on the source database.
This parameter applies to both physical and logical backup schedules for all database types.
The following table shows the thread count and estimated backup time for each backup schedule type:
| Backup schedule type | Maximum concurrent threads for full backup | Estimated time to back up 100 GB |
|---|---|---|
| serverless | 16 | 1–20 hours |
| micro | 2 | 20 hours |
| small | 4 | 5 hours |
| medium | 6 | 2.5 hours |
| large | 8 | 1.5 hours |
| xlarge | 16 | 1 hour |
Backup network speed limit
Caps backup speed by limiting network bandwidth. The default value is 0, which means no limit.
This parameter applies only to physical backup schedules of MySQL and Oracle databases.
To limit network bandwidth without affecting concurrency, configure this parameter and leave Maximum Concurrent Threads for Full Data Backup at its default value.
Set the maximum backup speed
When creating a backup schedule
Configure Maximum Concurrent Threads for Full Data Backup and Backup network speed limit on the backup schedule creation page.
When modifying an existing backup schedule
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On the details page of the backup schedule, click Backup Time and Advanced Settings.
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Configure Maximum Concurrent Threads for Full Data Backup and Backup network speed limit.
For details on other settings on this page, see Modify the backup time and advanced settings.
Next steps
To choose the right backup schedule type for your workload, see Select a backup schedule type.