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Question

Aux Copy throughput to AirGap 10 times slower when copying Synth fulls than incrementals

  • June 19, 2025
  • 3 replies
  • 59 views

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Hi,

 

We are facing a strange behaviour with our auxcopy process. All week when we copy some incremental backups we are achieving pretty good throughputs but when it comes to weekly Synthetic fulls, for the same amount of data, the troughtputs are 10 times slower.

We plan on migrating our VSA to indexing V2 hoping it could help.

Any other ideas are welcome.

Thx in advance 

 

3 replies

Emils
Vaulter
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  • Vaulter
  • June 19, 2025

Hi ​@JohnX 

Interesting observation you've captured between Incrementals and Synthetic Fulls. Migrating to Indexing V2 should give you additional streams for the synthetic full which may indeed assist to allow more readers, although that's assuming the issue is from limited streams.

Additionally is the wan link to AGP dedicated?

Also have you tried to use our performance analysis tool available in our documentation to help pinpoint the bottlekneck? very tricky to provide guidance without knowing the bottlekneck.,


Scott Moseman
Vaulter
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+1 for multi-stream synth fulls with v2 indexing.  The single stream nature of v1 indexing has long been an issue people would discover with Aux Copies.

Thanks,
Scott
 


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  • Author
  • July 26, 2025

Hi,

I just wanted to give a feedback for this issue, conversion to V2 indexing actually solved the issue. We can now achieve much better throughputs.

Thanks Scott and Emils.