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Curious about active/active datacenters and Commvault client backups on VM's

  • December 2, 2024
  • 3 replies
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On Commvault version: 11.28.

We have several VM’s that are being backed up by Commvault clients.  If we had 2 datacenters in an active/active configuration (where VM’s could migrate/be migrated back and forth individually between the 2 datacenters), is there a suggested configuration (or a CommVault upgrade thus giving new functionality) to allow a moved VM to utilize the Commvault media agents at whatever datacenter is local to them?  We don't currently use “plans” just old storage policies, and I don’t see a way for configuring a client in a storage policy to always choose a local media agent (in the DC its running in) to process the backup. 

I believe if we are backing up a VM using the Commvault VMware backup mechanism then we can just use a “local CommVault proxy” and the VM will be auto assigned to the proper local proxy when backups run, but I’m talking about a VM that we do not use VM backups for, ones that we use clients on (like when we backup up MSSQL/Oracle databases or just “to use a client” as this happens often on very large servers (multi TB drives, apps are sensitive to a VM snapshot for backups, etc)

Best answer by Onno van den Berg

I think you should be able to achieve this through multi-region plans: https://documentation.commvault.com/2024e/expert/newsletter_for_new_features_in_commvault_platform_release_2024e_01.html#vmware-region-based-backups-in-vsphere-environment

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

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Onno van den Berg
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  • December 3, 2024

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  • December 4, 2024

Thanks!  I read some of this and it seems very specific to “region based” environments.  What if the VMware hosts are not in different literal regions, but just “sort of far away” datacenters where there is a lot more latency (and possible bandwidth issues) if a VM migrates to a different datacenter yet tries to use the resources (storage, DDB’s, etc) from its original location?  If I were to upgrade to 2024E, can I define my own “regions” (basically I would define not regions but “datacenters”) and region based  rules would still “work”?


Onno van den Berg
Commvault Certified Expert
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  • December 4, 2024

You can define custom regions as well which means it also allows you the use this concept to connect a custom region to a DC. 


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