# Best Practices for Data Domain Boost Client

## Configurations

### Auxiliary Copy

Add the destination ${{ MediaAgent }} to the source data domain mountpath.

### Use of Encryption

Do not enable encryption on backups in Commvault. This prevents the Data Domain from further deduplicating the data written on the device side. If you need to use encryption of the data at rest, enable this feature on the Data Domain.

To encrypt data between the Commvault servers and the Data Domain devices, enable the Encryption of data in flight through DD Boost option in the Data Domain console. For the best performance with the Encryption of data in flight through DD Boost option, select anonymous authentication mode.

### Compression

Compression is optional. Enable compression if you create secondary copies to storage other than Data Domain. Compression can also improve backup performance when multiple clients send data through MediaAgents because it reduces the amount of data transferred over the network.

If all backups use the Data Domain Boost client-direct model and all backup and secondary copies are stored on Data Domain systems, disable Commvault compression and allow the Data Domain software to perform data reduction. This configuration provides optimal deduplication and storage efficiency.

If you use only the Data Domain Boost client-direct model, verify that Commvault compression is disabled before running backups. Depending on your deployment and interface, the compression setting might not be available in Command Center. If you can't verify the setting in Command Center, use the CommCell Console or review the storage policy copy configuration to confirm that compression is disabled.

### Storage Acceleration (Client-Direct Mode)

Storage Acceleration (also known as Client-Direct mode) can be set up on clients to directly send the backup data to a configured Data Domain Boost Client storage library. Without Storage Acceleration, clients send the backup data to the ${{ MediaAgent }} first, and then the ${{ MediaAgent }} writes the data into the Data Domain Boost Client storage library. If the clients have the ability to send data directly to the Data Domain storage device, you can configure them to use Storage Acceleration.

## Related Topics

- Accelerating backups to Data Domain Boost Client Library

## Additional Resources

For step-by-step configuration instructions with screenshots, see the following:

- Dell PowerProtect DD Series Appliances and Commvault Integration Guide
- Data Domain: DDBoost Best Practices for Commvault (KB article)

These resources provide comprehensive guidance for setting up and integrating Dell PowerProtect DD Series appliances with Commvault.

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