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Netapp NAS backup with snapdiff

  • 22 September 2021
  • 5 replies
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Hello,

We want to backup a big Metro Cluster with many volumes and NFS and CIFS shares using the snapdiff feature. We started with default subclient and configured some exclusions of shares where we do not want to create a snapshot. Each share is on a separate volume but we saw that snapshots are created on all volumes even on the volumes with excluded shares.

How can we control the behaviour of creating snapshots on backuped shares (volumes) only?

Thanks at all.

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Best answer by Ledoesp 22 September 2021, 12:25

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Hi Thomas,

Path filters are not supported

https://documentation.commvault.com/11.22/expert/19647_filter_guidelines_for_ndmp_backup_operations.html

https://documentation.commvault.com/11.24/expert/101254_filter_guidelines.html

 

I would not use the default subclient and will create some subclients with the volumes I am interested to protect

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Hello,

Thank you for your answer.We do NOT a NDMP backup, we backup NFS and CIFS Shares with Snapdiff option.

Faster Incremental Backups for NAS File Servers Using NetApp SnapDiff (commvault.com)

Userlevel 3
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Got it, if using network share you have to define the CIFS or NFS shares you are interested to protect, I find a bit hard to understand what do you mean with “configured some exclusions of shares”, this means that you filtered some shares to exclude?

If you don’t want to include a specific share then you don’t define it within the subclient content so no need to exclude them in Filters tab as an exclusion. If each share corresponds to a volume, only snapshots will be created for the content defined.

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In default subclient 4 shares were excluded, but backup created a snapshot of the volumes containing these excluded shares. So you mean it would be better to create subclients for any single share (volume) to control the backup and snapshot creation?

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what does means that 4 shares were excluded? are they defined in the subclient content or not?

For troubleshotting purposes it can be good to add a share one by one to see if snapshot arecreated in the respective NetApp volume

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