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Question

Can you promote a synchronous tape copy to be the primary copy of a storage policy


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Setup:
We have a storage policy which has the primary copy is deduplication enabled
Second copy is to tape and is a synchronous copy but also contains backup data kept for 7 years

We are retiring the disk library including the Media agents associated with it 
To do this we are promoting the tape copy and totally deconfigure and purge the disk library 

6 replies

dude
Byte
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  • Byte
  • 316 replies
  • January 29, 2025

https://documentation.commvault.com/2024e/expert/promoting_synchronous_copy_to_primary_copy.html

“You cannot promote a synchronous copy that is associated with tape storage to a primary copy.”

 

General info about promoting a copy to primary

https://documentation.commvault.com/2024e/essential/promoting_secondary_copy_to_primary_copy.html


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  • Vaulter
  • 243 replies
  • January 29, 2025

If I may add the second link states:

  • You cannot promote Air Gap Protect copies, global secondary tape copies, archive copies, and snapshot copies.

Please check if your secondary copy is associated to a tape storage pool aka global secondary copy policy, I think this is where the restriction is coming from, if not then you will be allowed to promote.


dude
Byte
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  • Byte
  • 316 replies
  • January 29, 2025
Ledoesp wrote:

If I may add the second link states:

  • You cannot promote Air Gap Protect copies, global secondary tape copies, archive copies, and snapshot copies.

Please check if your secondary copy is associated to a tape storage pool aka global secondary copy policy, I think this is where the restriction is coming from, if not then you will be allowed to promote.

Boa


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@LiliDale : Is the tape copy using a global tape pool? Also which FR is being used here? Are you getting any error message while promoting copy?


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  • Author
  • Bit
  • 1 reply
  • February 4, 2025

This is v11.32 Commvault

 

Are we saying in some circumstances you can promote a tape copy as a primary copy such as a global secondary policy. 

 

What are the situations where it is possible to promote a tape copy as a primary copy in Commvault. 

 

In the old Commvault versions you had the option to promote a tape copy. I am inquiring on my colleague’s behalf. He opened a ticket with Commvault and they told him it is not possible to promote tape copies as primary. Referencing on tickey 250128-930.

 

This is a normal day to day backup operations and promoting a tape copy should always be an option for a Backup Administrator. Not having that option is not a good look on the product. In older versions it use to be the norm.   Not sure what the reasoning of Commvault of removing that.

 

They should just remove the tape drive as an option for storage if this is not even possible. 

I must say I am a bit disappointed with Commvault on this.


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  • Vaulter
  • 243 replies
  • February 4, 2025

I think ticket 250128-930 is self explanatory like all the references we have pointed in this thread.

 

If you link a copy to a Global Secondary Policy, then it is secondary and not primary.

 

As a workaround, you can create a “dummy” synchronous secondary copy to tape not linked with any Global Secondary Policy and convert it to primary, to get rid of those two copies you have to disk storage in your storage policies.


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