1-800-691-1991 | 9am - 8pm ET

How to enable advanced space control for Scale-out Backup Repository


Jobs running to Scale-Out Repository report "No scale-out repository extents have sufficient disk space to store the backup file", while at least some of the extents have a lot of free space.


Veeam Backup Service stores information about free space on each extent in cache. When Scale-out Backup Repository resource is assigned to a certain task, number in cache is subtracted with estimated size of task and is not updated with real free space while there is at least one task going to extent. Estimates may be not precise and difference between real and cached free space may grow.


Update 2 for Veeam Backup & Replication introduces new space update logic. When extent is assigned to a new task, service cache updates free space information with the real one and subtracts it with estimated sizes of all the tasks currently going to this extent.

You can switch to new logic by creating the following registry value:

Key: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\
Value Name: SobrForceExtentSpaceUpdate
Value Type: DWORD
Value Data (Default): 0

A value data of 0 indicates disabled, and value data of 1 is enabled. 

More information

Important: It is strongly recommended to use the key only in environments where all the backup chains use per-VM mode.
Veeam Backup & Replication
9.5.x and later
Last Modified:
Please rate how helpful this article was to you:
4.8 out of 5 based on 3 ratings
Thank you for helping us improve!
An error occurred during voting. Please try again later.

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

Knowledge base content request
By submitting, you agree that your personal data will be managed by Veeam in accordance with the Privacy Policy.

ty icon

Thank you!

We have received your request and our team will reach out to you shortly.


error icon

Oops! Something went wrong.

Please go back try again later.