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Question

AuxCopy / streams allocation

  • December 23, 2024
  • 2 replies
  • 34 views

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  • Bit
  • 4 replies

Hello All,

 

I noticed some of my AuxCopies use a lot of streams, whereas some other use just a few (3-5) even if I set the “Device Streams” value.

The ones that use a lot of streams are from storage policy copies associated with hundreds of laptop and workstations. The stream tab of the copy job show a lot of different JobID with 1 or 2 streams by job.

The ones that use smaller amount of streams are policy copies associated with Vms. The stream tab shows only a handfull of different job IDs.

 

Source data is deduplicated and stored on the same disk library and is copied to the same deduplicated storage pool.

 

I’d like to know if there is a way to force Commvault using more streams / pick more jobs?

 

Stream randomization and Distribute data evenly amont multiple streams are active on my storage policy properties.

Scalable ressource allocation are enabled by default.

Batch size is set at 1000 Jobs.

I am running CV v11.36.35.

 

Thanks in advance, merry christmas to all.

2 replies

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  • Vaulter
  • 86 replies
  • December 24, 2024

Hi ​@jxb,

Regarding the smaller streams- > Please let us know whether those VMs use V1 or V2 indexing. 

In V2 Subclient level indexing, we will able to run with multiple streams,

https://documentation.commvault.com/v11/expert/migration_of_clients_to_indexing_version_2.html

 

Regards,

Wasim


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  • Author
  • Bit
  • 4 replies
  • December 24, 2024

Hi ​@Wasim Thank you for taking some time answering my question.

You are absolutely right, our VSA client is still in indexing V1. 

I went through the documentation and I could not find any info on how indexing V2 could help the auxcopy process to pick more jobs to run simultaneously. It would definitely help using more streams while copying synthetic full jobs though but we are only taking full and incremental backups.

 

 


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