Proxy and Synthetic backups

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Proxy and Synthetic backups

Veeam Logoby aich365 » Fri Apr 21, 2017 3:01 pm

Hi
We have a Veeam server backing up 60 objects and 122 disks.
A Veeam proxy is also installed.

it seems when a Synthetic Full is in progress then all jobs are queued to the Proxy Server.
Some of the Synthetics are taking 60 hours which is leading to long delays in processing other backups as they wait in queues.

If Synthetic Backups (merging) is running will the Veeam Server offload all jobs to the proxy regardless of the load on the proxy?
Thanks
aich365
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Re: Proxy and Synthetic backups

Veeam Logoby Shestakov » Fri Apr 21, 2017 4:10 pm

Hi Clive!
Usually target repository is the bottleneck on synthetic full runs rather than proxy.
Could you provide the detailed bottleneck statistics?
Backup Server should not be loaded in any case.
Thanks!
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Re: Proxy and Synthetic backups

Veeam Logoby v.Eremin » Sat Apr 22, 2017 11:51 am

Just a guess - but don't you leverage a CIFS share as a target repository by any chance (in this case backup server is selected as a default gateway server)?
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Re: Proxy and Synthetic backups

Veeam Logoby aich365 » Mon Apr 24, 2017 9:27 am

Hi Thank you both for the response.

CIFS is not used.
The Repository is a NAS attached via iSCSi and presented in Disk Management as E: Drive and F: Drive.

The bottleneck shows as target.

I was more curious about why the 2nd proxy seems to be used exclusively for backups and when this proxy is busy jobs are queued but the Backup Server proxy is not used to share the Proxy load?
Thanks
aich365
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Re: Proxy and Synthetic backups

Veeam Logoby Shestakov » Mon Apr 24, 2017 12:33 pm

Since the bottleneck is target, proxy load is not an issue.
General recommendation in this case is either to switch to less IO operations intensive backup mode or upgrade the target repository.
Could you provide full bottleneck statistics including source, proxy, network and target load?
Thanks!
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Re: Proxy and Synthetic backups

Veeam Logoby foggy » Wed Apr 26, 2017 2:34 pm

I'd also check the maximum allowed number of concurrent tasks for the proxy and repository.
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