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Question

Can storage pools written with NDMP agent be used if the agent is changed to CIFS/NFS ?

  • 26 October 2023
  • 3 replies
  • 32 views

The customer has single nas client with an ndmp agent that is used for a snap primary and its backup copy. The snap primary has a non-dedup storage pool, the backup copy for that snap primary is dedup’ed and writes to a storagegrid. The customer wants to stop using the ndmp agent and use cifs/nfs agents going forward continuing use of the same storage pools with no interruption or negative impact.  Would this agent change have an impact on the storage pools ? Or can they create new subclients under the cifs/nfs agents, using the same storage policy and then use the same storage pools with no interruption or sealing of the storage pool ?

 

3 replies

C
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Hello @mzator 

This is certainly possible. We would simply see it as having a new Subclient associated to the copy.

 

Thank you,
Collin

M
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Colin thanks for the response.  I have conflicting information regarding reconfiguration impact to storage pools such as:

“This would likely be seen as net new data also impacting licensing as well until the old NDMP backups have aged off.  The storage pool will likely be affected by this as new baseline chunks will also be written.  You would need to confirm the customer has enough space for the library, DDB volume, and available license capacity by making this change. This would likely be seen as net new data also impacting licensing as well until the old NDMP backups have aged off.  The storage pool will likely be affected by this as new baseline chunks will also be written.  You would need to confirm the customer has enough space for the library, DDB volume, and available license capacity by making this change.

C
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Userlevel 5
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Hello @mzator 

This is not conflicting. Even though the “Pseudo-Client” is the same the data being backed up is in a different format. Some of the CIFs data blocks may deduplicate with the NDMP data blocks, but I wouldn’t expect the ratio to be very good. Whatever blocks don’t match will be written as a new baseline. You will still have the NDMP jobs until they age out. Both can use the same Storage Pool.

 

Thank you,
Collin

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