Step 4. Configure Backup Repository Settings

At the Repository step of the wizard, configure general repository settings including path to the repository folder and load control, and also advanced repository settings.

Configuring General Repository Settings

To configure general repository settings:

  1. In the Location section, specify a path to the folder where backup files must be stored. Click Populate to check capacity and available free space in the selected location.
  2. Use the Load control section to limit the number of concurrent tasks and data ingestion rate for the backup repository. These settings will help you control the load on the backup repository and prevent possible timeouts of storage I/O operations.

    • Select the Limit maximum concurrent tasks check box and specify the maximum allowed number of concurrent tasks for the backup repository. If this value is exceeded, Veeam Backup & Replication will not start a new task until one of current tasks finishes. For more information, see Limiting the Number of Concurrent Tasks.


    Consider the following:

    • Limitation of concurrent tasks is ignored if the backup repository acts as a target storage for a Veeam Cloud Connect job.
    • If you use backup repositories with per-machine backup chains, it is recommended to select the Limit maximum concurrent tasks to N check box. This option reduces the number of parallel operations performed by synthetic operations (synthetic full backup, backup files merge and transformation). Otherwise, the load on the backup repository may be high.


    The Limit read and write data rate to setting does not apply to health checks performed as part of backup and backup copy jobs. Even if you limit read/write rate for a backup repository, the health check will consume resources of the backup repository regardless of this setting. Consider this limitation when configuring basic and health check schedules for backup and backup copy jobs.

Step 4. Configure Backup Repository Settings 

Configuring Advanced Repository Settings

To configure advanced repository settings:

  1. Click Advanced.
  2. For storage systems using a fixed block size, select the Align backup file data blocks check box. Veeam Backup & Replication will align VM data saved to a backup file at a 4 KB block boundary.
  3. When you enable compression for a backup job, Veeam Backup & Replication compresses VM data at the source side and then transports it to the target side. Writing compressed data to a deduplicating storage appliance results in poor deduplication ratios as the number of matching blocks decreases. To overcome this situation, select the Decompress backup data blocks before storing check box. If data compression is enabled for a job, Veeam Backup & Replication will compress VM data on the source side, transport it to the target side, decompress VM data on the target side and write raw VM data to the storage device to achieve a higher deduplication ratio.


Veeam Backup & Replication does not compress VM data if encryption is enabled for a job and the Decompress backup data blocks before storing check box is selected in the settings of the target backup repository. Therefore, in the job statistics, you may observe a higher amount of transferred data (the Transferred counter) as compared to a job for which encryption is disabled. For more information on job statistics, see Viewing Real-Time Statistics.

In the properties of the backup created with encryption, you may also see that the backup size (the Backup Size column) is larger than the original VM size (the Original Size column). For more information on backup properties, see Viewing Backup Properties.

  1. The This repository is backed by rotated hard drives option is disabled for NFS repositories. For more information, see Configuring Backup Repositories with Rotated Drives.
  1. To create a separate backup file for every machine in the job, make sure that the Use per-machine backup files check box is selected. If you clear the check box, Veeam Backup & Replication will create single-file backups. For more information on the backup chain formats and their limitations, see Backup Chain Formats.


Changing of the Use per-machine backup files setting after the repository was already created does not take any effect. To change backup chain format, follow the instructions provided in Upgrading Backup Chain Formats.

Step 4. Configure Backup Repository Settings 

Page updated 3/22/2024

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