Veeam Backup & Replication 10
User Guide for Microsoft Hyper-V
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Performance Tier

Performance tier of a scale-out backup repository is the level used for fast access to the data.

The performance tier of a scale-out backup repository can comprise one or more performance extents. A performance extent is a backup repository (except an object storage repository) added to the scale-out backup repository. The list of the performance extents is displayed in the scale-out backup repository wizard, on Step 3. Add Backup Repository Extents.

The backup repository added to the scale-out backup repository as a performance extent ceases to exist as an individual backup repository.

On every performance extent, Veeam Backup & Replication creates the definition.erm file. This file contains a description of the scale-out backup repository and information about its performance extents.

Inherited and Not Inherited Settings

The performance extents inherit most configuration settings from the underlying backup repositories. The following settings are inherited:

  • Number of tasks that can be performed simultaneously
  • Read and write data rate limit
  • Data decompression settings
  • Block alignment settings

The following settings are not inherited:

  • Rotated drive settings. Rotated drive settings are ignored and cannot be configured at the level of the scale-out backup repository.
  • Per-VM backup file settings. Per-VM settings can be configured at the level of the scale-out backup repository.

Limitations

The same limitations that are specific for certain types of backup repositories apply to the performance extents. For example, if you add Dell EMC Data Domain as a performance extent to the scale-out backup repository, you will not be able to create a backup chain longer than 60 points on this scale-out backup repository.

The performance extents of the scale-out backup repository should be located in the same site. Technically, you can add to the scale-out backup repository the performance extents that reside in different sites. However, in this case Veeam Backup & Replication will have to access VM backup files on storage devices in different locations, and the backup performance will degrade.

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