The Best Practices guide for Veeam Backup & Replication 9 is now available, it was developped by Veeam architects. This guide is intended for Backup Administrators or Consultants managing Veeam Backup & Replication on a daily basis. Most sections of this guide assume you already have hands on experience with Backup & Replication, and will serve as an “advanced user guide”, meaning that more basic usage information, system requirements and the like must be found in User Guide in Veeam Helpcenter. Service providers delivering BaaS and DRaaS with Veeam Cloud Connect should refer to the corresponding Veeam Cloud Connect Reference Architecture.

Veeam B&R 9 Update 2

Download the Best Practices guide for Veeam Backup & Replication 9 here.

I wanted to highlight the WAN Accelerator part because it is very interesting. Basically, WAN acceleration provides sufficient capability whilst the required network bandwidth is dramatically reduced when performing Backup Copy and Replication jobs. This technology is specifically designed to accelerate Veeam job. When using WAN acceleration on links with very poor bandwidth, you may have to manually seed the initial copy to the target. The WAN accelerator uses its own digests based on the hashes of the blocks inside a VM disk, which means that it reads data from the backup files and re-hydrating them on the fly, or it reads directly from the source VM in case of replication. The WAN accelerator component will then process those data blocks with much more efficient data deduplication and compression algorithms. This is the reason why the WAN accelerator consumes significant amounts of CPU and RAM resources. You can use this very nice calculator to calculate possible savings and needed bandwidth:

Note: When multiple source WAN accelerators are connected to a single target WAN accelerator (many-to-one deployment), it is recommended to use SSD or equivalent storage for the target cache, as the I/O is now the sum of all the difference sources.


  • (Number of operating systems * 10 GB) + 20 GB
  • (Number of sources * formula for configured cache size)

Need to deploy Veeam B&R 9 Update2? Follow this guide!

You can learn more about Veeam Backup & Replication 9.5 here.