Data Backup and Recovery Discussions

Difference in pri en sec snapshots ONTAP 9.3

Sander

Hi community,

thing is i'm struggeling with snapshot sizes on primary and secondary ONTAP 9.3P2 controllers.

Am i right to presume that when i take a daily snapshot on the primary with a snapmirror label _daily on it (let's say 100GB), this is transferred to the secondary Netapp with a SnapMirror XDP policy, this has to be the same size on the secondary (100GB)? I mean SM policy picks the SnapShot with the _Daily SM label, so it has to be the same snapshot on the secondary?

I see some big differences in snapshot size with the same name on pri and sec. Netapp.

Attached is a file with volumename, snapshotname and sizes.

 

2 REPLIES 2

Re: Difference in pri en sec snapshots ONTAP 9.3

mrahul

The update from primary to secondary is only the data that has changed since the previous update.

View solution in original post

Re: Difference in pri en sec snapshots ONTAP 9.3

DataOntaper

Consideration for the Size of Snapshots/Data on 2 differnt Controllers:

 

Detailed information's about impact of Dedupe and Compression can be found in our Technical Report

TR-4476 NetApp Data Compression, Deduplication,and Data Compaction

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