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Question

Proxmox pve 9.1 slow performance

  • February 9, 2026
  • 12 comments
  • 56 views

Hi since upgrading my PVe to version 9.1 and the VBR to 13, the backup performance have degraded a lot. We have 1 worker per pve host, storage is Ceph. Did someone encounter this issue?

12 comments

Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • February 9, 2026

Don't use Proxmox but did you ensure the plug-in is up to date for Veeam?  I know that can cause issues.


i installed the latest pve plugin. version 13.3.0.237.


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • February 9, 2026

Ok was just one suggestion.  If I can think of anything else will post.


great thanks. 


coolsport00
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  • Veeam Legend
  • February 9, 2026

Hi ​@stefan.sevasta ...have not seen any posts on here about PXMX performance degradation. Probably best to contact Veeam Support if you haven’t already. They’ll probably ask for logs for a particular job(s) with the performance issue and can hopefully provide some tips to help.

Best.


Hi, just did and already sent them some logs etc. Thanks, 


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • February 9, 2026

I am sure they will get you sorted out. Let us know how it goes.


as soon as i have a solution, i ll posted here.


coolsport00
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  • Veeam Legend
  • February 9, 2026

as soon as i have a solution, i ll posted here.

Yes..please do so. Thank you.


  • New Here
  • February 9, 2026

same issue here.

Promox 9.1 with Ceph.

 

Speed ist good until veeam worker memory runs full.

increased the memory to 64gb but nothing changed. vm runs to 100% memory and poor speed.

 

we use currently PBS because veeam is unsubale atm


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • February 9, 2026

same issue here.

Promox 9.1 with Ceph.

 

Speed ist good until veeam worker memory runs full.

increased the memory to 64gb but nothing changed. vm runs to 100% memory and poor speed.

 

we use currently PBS because veeam is unsubale atm

Would suggest the same as OP and contact Support to determine the issue.

 
 
 

coolsport00
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  • Veeam Legend
  • February 9, 2026

Hi ​@k9sec - best bet is to contact Support at this point.