Network Performance Standards for Avamar Backups

For troubleshooting performance issues for Avamar or Avamar/DataDomain backups, please refer to the following article

• KB 335029 - Avamar client backup performance - how to identify bottlenecks (RESOLUTION PATH)

Avamar Network Performance Requirements
Defining the best practice for environments with Avamar over WAN.

Network throttling
The Network rate throttle setting in the plug-in options for file system plug-ins
controls the rate at which Avamar sends data to the server. When you specify a value
in Mbps for this option, the avtar process pauses as long as necessary after sending
each packet to ensure that network usage does not exceed the specified maximum
bandwidth.

Use of this option can improve WAN backups for desktop and laptop clients.
 
See KB article below which discussed throttling in more detail:
 
KB 335284 : How to throttle an Avamar client's consumption of system resources (CPU, network, I/O & memory)

WAN bandwidth guidelines
Refer to the "Avamar vX.X and Data Domain System Integration Guide" in the section called Best Practices for WAN backups

• https://support.emc.com/docu91837_Avamar-18.2-and-Data-Domain-System-Integration-Guide.pdf?language=en_US
• https://support.emc.com/docu89851_Avamar-18.1-and-Data-Domain-System-Integration-Guide.pdf?language=en_US
• https://support.emc.com/docu81548_Avamar-7.4-and-Service-Packs-and-Data-Domain-System-Integration-Guide.pdf?language=en_US

The document discusses WAN use cases and provides a table showing estimates of typical latencies and
bandwidths for the associated use cases. 

Efficient Restore
Enable efficient restore by using the --ddr-compressed-restore option in avtar
for better restore performance over a WAN.
Do not enable efficient restore for clients within the Data Center.