+1Hi,
I have question about backup image replication between datacenters.
We have two datacenters and each DC has its own Commvault infrastructure. We need to transfer or replicate backup images from first commcell in Primary DC to another commcell in secondary DC.
How can I transfer images in such a way?
Thank you in advance.
Regards
Best answer by jgeorges
Hi
Assuming you just want to keep copies of backups on Primary AND Secondary, you can leverage Auxiliary Copy to move data between locations.
Depending on the hardware used to take these images, you could leverage mirroring between source and destination filers OR at the filer level, set up a ‘Mirror’ copy and have Commvault write to primary and leave a read only path from ‘secondary’ for DR situations.
https://documentation.commvault.com/11.24/expert/11490_additional_copies_of_backup_data.html
However if you want the images to be available for restore in the Secondary Commserve and vice versa, you would need to ‘CCM’ (Commcell Merge) the jobs to the Secondary location. Not really something you’d want to be doing often if this is an ongoing job/task.
This is because each Commcell is its own independent environment, Primary being unaware of whats going on at Secondary and vice versa.
Jobs written in one, won’t exist in the other even though data may be copied over there.
Cheers
Jase
Hi
Assuming you just want to keep copies of backups on Primary AND Secondary, you can leverage Auxiliary Copy to move data between locations.
Depending on the hardware used to take these images, you could leverage mirroring between source and destination filers OR at the filer level, set up a ‘Mirror’ copy and have Commvault write to primary and leave a read only path from ‘secondary’ for DR situations.
https://documentation.commvault.com/11.24/expert/11490_additional_copies_of_backup_data.html
However if you want the images to be available for restore in the Secondary Commserve and vice versa, you would need to ‘CCM’ (Commcell Merge) the jobs to the Secondary location. Not really something you’d want to be doing often if this is an ongoing job/task.
This is because each Commcell is its own independent environment, Primary being unaware of whats going on at Secondary and vice versa.
Jobs written in one, won’t exist in the other even though data may be copied over there.
Cheers
Jase
+1Hi
Perfect, thank you for your attention and great reply.
So there is no Replication solution for transferring Backup Images from one Commcell to another.
As a matter of fact some backup softwares has this feature to replicate “Backup Image” to other site and then destination software can import the Image. So the backup Image could be restored at destination.
Best regards.
Alpha
+23Hi
Perfect, thank you for your attention and great reply.
So there is no Replication solution for transferring Backup Images from one Commcell to another.
As a matter of fact some backup softwares has this feature to replicate “Backup Image” to other site and then destination software can import the Image. So the backup Image could be restored at destination.
Best regards.
Alpha
Backups in Commvault are not ‘self contained’ in the same way - the metadata associated is stored separately from the actual data itself. In many ways this is what gives us superior deduplication to most other products out there. You can transfer backups from one CommCell to another using something like CommCell migration or Global Repository Cell, but both those options are usually for an entire client not selective backups. The latter option here can be used for DR when you are frequently moving data from once place to another. However it probably does not work in the way you you are familiar with - the data transfer is just metadata and usually there is a shared repository for the backup data (like a cloud library).
You can use commcell migration if you would like to consolidate your two separate deployments down to a single CommCell. That will allow you to have much more flexibility if you you can allow it.
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