This example will help you understand how you can use Veeam Backup Management Suite to gauge the attained traffic savings and raise the efficiency of your backup copy jobs through optimized WAN accelerator placement.
By default, during the backup copy job Veeam Backup & Replication transports VM data directly from the source backup repository to the target backup repository. This type of transport is recommended if you plan to copy backup files over fast connections. However, if you plan to transport backup files over the WAN or slow connections, it is recommended to configure a pair of WAN accelerators in your backup infrastructure and copy VM backups via these WAN accelerators.The goal of WAN acceleration is to send less data over the network. To reduce the amount of data going over the WAN, Veeam Backup & Replication uses the global data deduplication mechanism. The process goes as follows:
1.When you first run the backup copy job, Veeam Backup & Replication analyzes data blocks going over WAN.
2.With every synchronization interval of the backup copy job, Veeam Backup & Replication uses the data redundancy algorithm to find duplicate data blocks in the copied backup file. Veeam Backup & Replication analyzes data blocks in the backup file on the source side and compares them with those that have been previously transferred over the WAN. If an identical data block is found, Veeam Backup & Replication deduplicates it.
As a result, only unique data blocks go over the WAN. Data blocks that have already been sent are not sent with new job sessions. This way, Veeam Backup & Replication eliminates transfer of redundant data over the WAN. To read more about WAN acceleration technology and setup of WAN accelerators, please refer to Veeam Backup & Replication User Guide, WAN Acceleration section.
Take the following steps:
1.In the Veeam Backup & Replication console, configure a pair of WAN accelerators, as described in the Adding WAN Accelerators section of Veeam Backup & Replication User Guide. (Note that WAN accelerator can be only installed on 64-bit Microsoft Windows server.)
2.Create a backup copy job (see the Creating Backup Copy Jobs section of Veeam Backup & Replication User Guide for details). On the Data Transfer step of the job wizard, choose Through built-in WAN accelerators and select source and target accelerators from the list.
3.To run the backup copy job right after it is created, on the Summary step of the wizard select the Enable the job when I click Finish check box.
To automatically launch copy process for new restore points created by a backup job, link two jobs together by specifying backup copy job as a secondary target for the backup job (see Example 1 and Working with Backup Copy Jobs section of the Veeam Backup & Replication User Guide). Then at every synchronization interval, the backup copy job will check the source backup repository for new restore points. As soon as a backup job session is finished and a new restore point is created, the backup copy job will automatically copy this restore point to the target backup repository.
After you have several sessions of your backup and backup copy jobs completed, and several restore points are created and transferred using WAN accelerators, you will be able to analyze data transfer efficiency with Backup Copy Job report based on data on backup copy job sessions. For that, do the following:
1.In Veeam ONE Reporter, go to the Workspace tab, and from the navigation tree select Veeam Backup & Replication > Backup Copy Job.
2.Configure the following report parameters:
a.Scope - should be set to Veeam Backup servers
b.Accelerators - All items or the source-target accelerators pair.
c.Backup copy jobs - the instances of backup copy jobs run with selected WAN accelerators.
d.Choose a reasonable time period to report on.
3.Click Preview and wait for report generation to complete.
The report shows the amount of traffic passed through introduced WAN accelerators and calculates the bandwidth savings. The following charts are available within the Summary section:
●Traffic Efficiency - this chart depicts the nominal (raw) amount that would have been required if no WAN accelerators were implemented, and the actual amount of traffic transmitted over the network.
●Traffic Savings by Day - this chart shows the amount of data in GB saved by using WAN acceleration.
●Savings Ratio by Day - this chart plots the daily fluctuations in the raw size to traffic savings ratio.
The Accelerators Details and Jobs Details tables (following the charts) zoom in to the results of performed backup copy jobs, showing the amount of data transmitted between each accelerator pairings and individual job session data: