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The following best practices should be followed when using Commvault deduplication:
- Configure global deduplication policies before creating data management storage policies.
- When creating primary or secondary copies that will use global deduplication policies, the copies must be associated with the global deduplication policy at creation time.
- Determine and configure compression settings prior to protecting any data.
- Determine when partition deduplication is applicable.
- Enable client-side disk cache only for remote backups such as laptop / desktop clients or remote location which will backup directly over the WAN.
- Before hosting the DDB, ensure that the MediaAgent and disks meet the hardware and software requirements referenced in Deduplication Building Block Guide.
- Single or partitioned DDB configuration:
- Place the DDB in a folder on a different volume or partition than that of the root file system.
- Do not host the DDB under the software installation directory, for example software_installation_directory\Base directory.
- For Linux, host the DDB on LVM volumes. The DDB Backups use LVM software for snapshots.
- Partitioned DDB configuration:
- Host each DDB on different physical drives for better performance.
- When hosting the DDB on different MediaAgents, ensure that all MediaAgents are of similar operating system type with 64-bit version, and the MediaAgents are online.
- For more information on supported platforms, see Deduplication Building Block Guide.
- For DDB Network Interface - By default, no data network interface pair is configured.
- We recommend that you configure a dedicated Network Interface Card (NIC) on each partition MediaAgent and set up data interface pair (DIP) between the data path and partition MediaAgents:
- To increase the speed of the communication between the MediaAgents.
- To improve data protection job throughput.
- To avoid network bottlenecks.
- If you have a NIC configured on a partition MediaAgent, specify the network interface name or IP address for the DDB Network Interface.