topic DFM Secondary Storage Resizing - Constant Volume Warning in Active IQ Unified Manager Discussions

DFM Secondary Storage Resizing - Constant Volume Warning

eklipa — Thu, 05 Jun 2025 06:43:32 GMT

I have been having an issue with DFM secondary sizing on a snapvault volume. The DFM job in question is a mirror (SnapMirror) and then backup (SnapVault) job. The Snapmirror portion runs fine, but when the SnapVault kicks off it consistently tries to resize to a smaller size volume on the destination. It shows up as a warning, and says the following:

DataSet Name: Could not resize secondary volume DestinationFiler:/Volume (18378) to 13.1 TB. Selected volume size is too small to hold the current volume data.

I worked with this a little to try and resolve it, and set the following to see if it would help based on a BURT case.

dfm option set dpDSSVolMaxSizeMb=18874368 first and tried a protect now (It gave me more sizing warnings)

next tried this dfm option set dpDSSVolMaxSizeMb=0 to see if that might help (Waiting to try this one)

Please let me know if anyone has experienced this as a bug, or has found a solution to this issue.

DFM Secondary Storage Resizing - Constant Volume Warning

adaikkap — Mon, 17 Oct 2011 21:41:11 GMT

Is the primary dedupe enabled ? If so you are hitting the know issue which is release noted.

http://now.netapp.com/NOW/knowledge/docs/oncommand/relcore50/html/software/rnote_oc_core5/frameset.html

Dynamic volume resizing must be disabled to support deduplication plus "Mirror, then back up" protection policy

Regards

adai

DFM Secondary Storage Resizing - Constant Volume Warning

eklipa — Tue, 18 Oct 2011 11:49:21 GMT

Adai,

Thanks. Can you confirm whether this is the case for version 4.0.1 as well? That is what I am currently running.

Thanks, Eric

DFM Secondary Storage Resizing - Constant Volume Warning

adaikkap — Wed, 19 Oct 2011 10:13:10 GMT

Yes. its applicable in case of 4.0 also.

Regards

adai