Performance of Deduplication Database (DDB) backup is slow on Windows MediaAgents
Article ID: 54000
Article Type: Troubleshooting
Last Modified:
Troubleshoot performance issues during DDB backup by completing basic operations
Symptoms
Deduplication database backup performance decreases on Windows MediaAgents.
Causes
The performance of the DDB backup can decrease significantly for various reasons, such as:
A large number of concurrent I/O requests to the DDB volume.
When a DDB backup is run, a snapshot (shadow copy) of a DDB is created by using VSS on the same DDB volume. The shadow copy is deleted after the DDB data is backed up.
If the shadow copy storage is on the DDB volume during the DDB backup process, it might slow DDB backup performance.
Slow disk I/O because disk write caching is disabled on the DDB drive, or the DDB disk does not meet the hardware requirements of the DDB.
Resolution
To improve the DDB backup performance, complete each task until performance is optimized.