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Question

Understanding for deduplication in backup job

I have a query for deduplication which is enabled when creating a storage policy.
The partition path was chosen as a single partition path on a media-agent drive.

I took a Full backup of a VM and it wrote some chunks in the HCP S3 Storage.
Re-took the same backup again and it wrote more chunks in the HCP S3 Storage even though there wasn’t any change of the “VM content”.

 

How does deduplication play a role here?

 

 

 

3 replies

Scott Moseman
Rank
Userlevel 6
Badge +18

I assume there were changes inside the VM, yes?

Thanks,
Scott
 

Commvault Enterprise Success
J
Rank
Badge +5

@Scott Moseman no changes inside the VM. Took the same backup twice.

Arunkumar P
Rank
Userlevel 2
Badge +7

@Jass Gill - What was the dedup saving achieved for both the Full backup jobs? 

I would recommend running four full backup jobs for the same client and then compare the results. 

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